Semi-open releaser for small head mites of monochamus alternatus

Abstract

The utility model discloses a semi-open type pine longhorn beetle small head mite releaser, the releaser comprises a top cover, a cross baffle, an insect collecting funnel, an insect collecting bottle and a lure, the upper end and the lower end of the cross baffle are fixedly connected with the top cover and the insect collecting funnel respectively, the middle of the cross baffle is provided with a hollow part, the lure is arranged at the hollow part, and the insect collecting bottle is connected with the top cover. A monochamus alternatus small head mite attractant is also injected into the lure core; the large opening end of the insect collecting hopper faces upwards, the small opening end of the insect collecting hopper is connected with the insect collecting bottle through a connecting piece, a channel allowing monochamus alternatus to enter the insect collecting bottle is arranged between the insect collecting hopper and the insect collecting bottle, and at least one releasing hole allowing the monochamus alternatus to escape is formed in the lower portion of a bottle body of the insect collecting bottle. The scheme is novel in design thought, has the advantages of being simple in structure, low in cost, long in service life and the like, and has remarkable ecological benefits in promoting ecological environment restoration and ecological balance improvement.

Description

Technical Field

[0001] This utility model relates to the field of biological control technology, and in particular to a semi-open release device for small head mites from the pine beetle. Background Technology

[0002] Pine wilt disease is caused by the pine sawyer beetle (Pinus sylvestris var. sylvestris). Monochamus alternatus Bursaphelenchus xylophilus Hope carries and spreads pine wood nematode ( Paracarophenax alternatus Pine wilt disease is a devastating global forest disease that causes pine trees to wilt and die. Integrated management of pine sawyer beetles is an important strategy to curb the spread of pine wilt disease.

[0003] Small head mite of the pine beetle ( Figure 1 The *Spodoptera litura* (Xu and Zhang) is the world's first natural enemy mite to parasitize the eggs of the pine sawyer beetle. It not only efficiently kills the eggs but also spreads its population through the beetle's body surface, demonstrating significant pest control potential. However, current release technologies for these natural enemy mites are not mature enough to achieve precise control and large-scale colonization of the host insect, resulting in high release costs and significantly reduced control effectiveness. Furthermore, no literature has yet disclosed devices for effectively attracting and releasing *Spodoptera litura*, leaving a significant research gap in the application of *Spodoptera litura* for the control of pine sawyer beetle infestations. Summary of the Invention

[0004] In view of this, the purpose of this utility model is to propose a semi-open release device for small head mites of the longhorn beetle that is reliable in implementation and flexible in application.

[0005] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows:

[0006] Based on the above, this solution also proposes a semi-open release device for the pine longhorn beetle and its small head mite. The structure specifically includes: a top cover, a cross baffle, an insect collection funnel, an insect collection bottle, and a lure. The upper and lower ends of the cross baffle are fixedly connected to the top cover and the insect collection funnel, respectively. A hollow is provided in the middle of the cross baffle, and the lure is placed in the hollow. The large opening of the insect collection funnel faces upward, and its small opening is connected to the insect collection bottle through a connector. A channel for the pine longhorn beetle to enter the insect collection bottle is provided between the insect collection funnel and the insect collection bottle. The lower part of the insect collection bottle is provided with at least one release hole for the pine longhorn beetle to escape.

[0007] As one possible implementation, the top cover described in this solution is a conical umbrella-shaped structure with its wide end facing downwards.

[0008] As a possible implementation, further, the top cover and the funnel are both provided with four strip-shaped opening slots matched with the cross-shaped baffle, the upper and lower ends of the cross-shaped baffle respectively pass through the strip-shaped opening slots on the top cover and the funnel, and are fixed by a strap.

[0009] As a possible implementation, further, the lure is hung on the hollow part by a hook, and the hook is fixed on the hollow upper end of the cross-shaped baffle.

[0010] As a possible implementation, further, the top of the top cover is provided with a hanging hook for hanging the releaser on an external support.

[0011] As a possible implementation, further, the bottom middle part of the cross-shaped baffle is provided with a chamfer; the surface of the cross-shaped baffle and the inner surface of the funnel are smooth.

[0012] Based on the above, the present application further provides a pine bark beetle Protocameletus thomasi releasing method using the above releaser, which uses the above-mentioned semi-open pine bark beetle Protocameletus thomasi releasing device, and the method comprises:

[0013] 1) Put the Pinus massoniana wood as a production wood into the funnel, and also put the pine bark beetle Protocameletus thomasi on the production wood; use adhesive tape to seal the three escape holes of the funnel, and hang the lure with a service life of 2 months on the cross-shaped baffle of the releaser to promote the pine bark beetle to be trapped in the funnel;

[0014] 2) Hang the semi-open pine bark beetle Protocameletus thomasi releasing device in the forest to induce the pine bark beetle to enter the funnel, so that the Protocameletus thomasi infects the pine bark beetle and establishes a transmission relationship;

[0015] 3) Open the escape hole of the funnel of the semi-open pine bark beetle Protocameletus thomasi releasing device to allow the pine bark beetle to escape and spread with the Protocameletus thomasi.

[0016] As a possible implementation, further, in step 1) of the present application, the funnel is also placed with flower mud.

[0017] As a possible implementation, further, in step 1) of the present application, the production wood is placed in the funnel in a horizontal or inclined manner.

[0018] As a possible implementation, further, the releasing method of the present application uses a plurality of semi-open pine bark beetle Protocameletus thomasi releasing devices.

[0019] Compared with the prior art, the present invention, employing the above technical solution, has the following advantages: The semi-open pine longhorn beetle small-headed mite release device of this solution has the advantages of novel design concept, simple structure, low cost, and long service life. By adding commercially available attractants to the lure core, it can more efficiently attract adult pine longhorn beetles to the release device to lay eggs and feed. Simultaneously, the attractant has a certain attraction for the pine longhorn beetle small-headed mite, resulting in a better retention effect on the wood, facilitating subsequent re-seeding.

[0020] Current methods for releasing natural enemy mites mainly include wind-blown release, vibration-mechanical release, and drone release, which suffer from drawbacks such as terrain constraints, high costs, slow effectiveness, and insufficient precision. In contrast, this invention proposes for the first time to establish an artificial habitat for the pine sawyer beetle coupled with the pine sawyer mite, utilizing its seed-carrying characteristics for precise release. By adding an escape device to the collection bottle, the time the pine sawyer beetle spends in the release device is extended, increasing the seed-carrying probability of the pine sawyer mite, while also ensuring that the beetle carrying the mite can escape the release device normally, thus carrying the pine sawyer mite into the forest. Furthermore, cross-shaped baffles of different lengths can be pre-set to adapt to different release conditions and forest stands.

[0021] This invention develops a long-lasting and highly efficient biological control technology for insects. Its large-scale promotion and application can significantly reduce pesticide use, thereby improving the stability and biodiversity of forest ecosystems and maintaining ecological balance. It also significantly reduces the pollution of soil, water, and air by chemical pesticides, promoting ecological restoration and improving ecological balance, thus demonstrating significant ecological benefits. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 2 This is a simplified implementation diagram of the release mechanism in this solution;

[0024] Figure 3 This is a partial structural diagram of the release device in this solution;

[0025] Figure 4 This is a schematic diagram of the cross baffle of the release device in this solution;

[0026] Figure 5 This is a schematic diagram of the top cover of the release device in this design;

[0027] Figure 6 This is a simplified diagram showing that the release device in this solution contains wood and floral foam;

[0028] Figure 7 This is a brief data comparison chart of the insect collection bottle of the release device in this scheme to optimize the escape method. In the chart, Figure A shows the comparison of the effects of different escape methods of the insect collection bottle of the semi-open release device with the opening 3 cm away from the bottom of the bottle on the number of longhorn beetles that escape and the residence time. Figure B shows the comparison of the effects of different escape methods of the insect collection bottle of the semi-open release device with the opening flush with the bottom of the bottle on the number of longhorn beetles that escape and the residence time.

[0029] Figure 8 This is a comparison chart showing the effect of different numbers of escape hole openings on the escape of the pine longhorn beetle when the releaser of this scheme is of the 3L specification. In the chart, Figure A shows the effect of different numbers and diameters of openings on the number of pine longhorn beetles that escape from the 3L semi-open releaser, and Figure B shows the effect of different numbers and diameters of openings on the escape time of the pine longhorn beetle.

[0030] Figure 9 This is a comparison of the escape situation when the insect collection bottle of the releaser in this scheme is 3L and 10L. In the figure, A shows the effect of different number and diameter of openings of the 3L and 10L insect collection bottles of the semi-open releaser on the number of pine beetles that escape. B shows the effect of different number and diameter of openings of the 3L and 10L insect collection bottles of the semi-open releaser on the escape time of the pine beetles.

[0031] Figure 10 This paper compares the effects of different pine branch lengths placed in the 3L insect collection bottle of the release device on the escape of longhorn beetles. Figure A shows the effect of different pine branch lengths in the 3L insect collection bottle of the semi-open release device on the number of longhorn beetles that escape, and Figure B shows the effect of different pine branch lengths in the 3L insect collection bottle of the semi-open release device on the escape time of longhorn beetles.

[0032] Figures 1 to 5 This paper compares the effects of different pine branch lengths placed in the 10L insect collection bottle of the release device on the escape of longhorn beetles. Figure A shows the effect of different pine branch lengths in the 310L insect collection bottle of the semi-open release device on the number of longhorn beetles that escape, and Figure B shows the effect of different pine branch lengths in the 310L insect collection bottle of the semi-open release device on the escape time of longhorn beetles. Detailed Implementation

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are only for illustrating the present invention and do not limit the scope of the present invention. Similarly, the following embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0034] Example 1

[0035] Combination Figures 1 to 5 As shown in one embodiment, this embodiment provides a semi-open release device for the pine beetle *Spodoptera litura*, which includes a top cover 1, a cross baffle 2, an insect-collecting funnel 3, an insect-collecting bottle 4, and a lure core 6. The upper and lower ends of the cross baffle 2 are fixedly connected to the top cover 1 and the insect-collecting funnel 3, respectively. A perforation 21 is provided in the middle of the cross baffle 2, and the lure core 6 is located in the perforation 21. The lure core 6 is also injected with a commercially available pine beetle *Spodoptera litura* attractant. The larger end of the insect-collecting funnel 3 faces upward, and its smaller end is connected to the insect-collecting bottle 4 through a connector 8. A channel for the pine beetle to enter the insect-collecting bottle 4 is provided between the insect-collecting funnel 3 and the insect-collecting bottle 4. The lower part of the insect-collecting bottle 4 is provided with at least one release hole 41 for the pine beetle to escape.

[0036] The top cover 1 has a conical umbrella-shaped structure with its wide end facing downwards. The insect collecting funnel 3 has a diameter ≥ 45 mm and contains a moisturizing material. For easy connection, both the top cover 1 and the insect collecting funnel 3 have four strip-shaped openings 11 that cooperate with the cross baffle 2. The upper and lower ends of the cross baffle 2 pass through the strip-shaped openings 11 on the top cover 1 and the insect collecting funnel 3, respectively, and are fixed by cable ties 23.

[0037] In this design, both the cross baffle 2 and the insect collecting funnel 3 are coated with a heat-insulating and enhancing coating. The insect collecting funnel 3 is connected to the insect collecting bottle 4 via a connector 8 (e.g., a snap fastener). The insect collecting bottle can be a 10 L bottle, with three 1.5 cm diameter holes at the bottom as release holes 41. A 5 cm × 5 cm opening is made at the center of the bottom of the insect collecting bottle 4, into which a cone-shaped floral foam 10, 8 cm long and 8 cm in diameter, is placed.

[0038] As an example, the cross-shaped baffle 2 in this design has a length of ≥85 cm and a 12 cm × 5 cm rectangular opening 21 in the middle, with a metal hook 5 inside for installing the lure 6. That is, in this design, the lure 6 is suspended from the opening 21 by the hook 5, which is fixed to the upper end of the opening 21 of the cross-shaped baffle 2. The top of the top cover 1 is provided with a hanging hook 7, which is used to suspend the release device to an external support. The bottom center of the cross-shaped baffle 2 is chamfered 22; the surface of the cross-shaped baffle 2 and the inner surface of the insect collecting funnel 3 are smooth.

[0039] The assembly method of the release device in this solution is briefly as follows:

[0040] 1. Unfold the conical top cover and cross baffle, and adjust to the appropriate angle.

[0041] 2. After connecting the cross baffle through the top cover baffle slot, secure it with cable ties.

[0042] 3. Unfold the insect-collecting funnel, connect it to the cross baffle through the slot, and then secure it with cable ties.

[0043] 4. The buckle is connected to the insect collecting funnel by a cable tie, and then connected to the insect collecting bottle by the threads on the buckle.

[0044] 5. Install the lure at the hollowed-out hook of the cross baffle.

[0045] The formula of the commercially available pine borer mites attractant mentioned in this embodiment is an attractant comprising one of the following components: α-pinene, L-α-pinene, D-α-pinene, β-pinene, β-caryophyllene, α-phellandrene, and / or longifolene.

[0046] exist Figure 6 Based on what is shown, combined with Figure 6 As shown, based on the above, this embodiment also provides a method for releasing *Spodoptera litura*, which utilizes at least one of the aforementioned semi-open *Spodoptera litura* releasers, and the method includes:

[0047] 1) Place a section of pine wood as the production wood 9 into the insect collection bottle 4. At the same time, place the pine longhorn beetle mites on the production wood 9. Seal the three escape holes 41 of the insect collection bottle 4 with tape, and hang a lure 6 with a two-month effective period on the cross baffle 2 of the release device to encourage the pine longhorn beetles to be trapped in the insect collection bottle 4.

[0048] 2) Hang the semi-open pine longhorn beetle small head mite release device in the forest to induce pine longhorn beetles into the insect collection bottle 4, so that the small head mite infects the pine longhorn beetles and establishes a co-sowing relationship;

[0049] 3) Open the escape hole 41 on the insect collection bottle 4 of the semi-open pine beetle small head mite releaser, so that the pine beetle can escape and spread the small head mite.

[0050] In step 1), floral foam is also placed inside the insect collecting bottle; in step 1), the wood is placed horizontally or diagonally in the insect collecting bottle.

[0051] In addition, in step 1) of this plan, the number of wood-producing trees placed is no more than 20, with a length of 15-20cm and a diameter of 3-5cm. Both ends of all wood-producing trees are sealed with tin foil to extend their service life. When using them, the wood-producing trees need to be replaced in a timely manner according to the pest situation in the release sample area, i.e., the insect population density. They can be used for a maximum of more than 4 months, and the general replacement period is 2-4 months.

[0052] As a practical example, this release mechanism can be used in the following ways:

[0053] Three days before releasing the mites, hang the releaser in the forest, seal the three escape ports of the insect collection bottle with tape, and hang a lure with a two-month effective period on the cross baffle of the releaser.

[0054] Three days later, if adult longhorn beetles are found in the collection bottle, place a piece of wood approximately 20 cm long and 3 cm in diameter into the collection bottle. Then, place 2000 pine longhorn beetle mites, along with filter paper and PE film, into the release device's collection bottle, and tear off the tape on the escape hole. At the same time, insert several pine branches into the center of the floral foam for the pine longhorn beetles to feed on.

[0055] The release device is installed as follows: the release device is 2-4 meters above the ground, and the release devices are about 50 meters apart. The decoy core is replaced every 2 months.

[0056] In this scheme, the pine longhorn beetle is attracted by the volatile odor of the lure in the release device, feeding inside the device or laying eggs on the trees, carrying the pine longhorn beetle mites. At this time, some of the mites in the release device funnel attach to the thorax and abdomen of the longhorn beetle, establishing a colony-dispersing relationship. After the longhorn beetle finishes feeding or laying eggs, it leaves the release device and is carried into the forest. When the mite-carrying longhorn beetle mates, the mites move between beetle species, eventually crawling into the groove when the female longhorn beetle lays eggs, parasitizing the eggs, and swelling their abdomen by sucking egg fluid, forming a bloated body. After the offspring mites complete development, they emerge viviparously from the bloated body, actively seeking host eggs or returning to the longhorn beetle's body surface when the longhorn beetle is feeding nearby, establishing a new colony-dispersing relationship, achieving population expansion while playing an efficient biological pest control role. Meanwhile, the mites in the release device continue the population by parasitizing the eggs laid by the previously attracted female longhorn beetles.

[0057] Regarding the optimization of the release mechanism, this solution proposes the following technical optimizations:

[0058] 1. Selection of different escape methods for insect collection bottles:

[0059] A 3cm x 3cm opening was made in the body of a 3L insect collecting bottle. Four different escape methods were designed at the opening: plastic wrap, magnet, PVC film, and hinge. For the plastic wrap escape method, the opening was sealed with plastic wrap, with a slit cut in the middle for the pine needle longhorn beetle to escape. For the magnet escape method, a 3cm x 3cm U-shaped opening facing downwards was made in the bottle, and a miniature magnet with a diameter of 3mm and a thickness of 2mm was installed at the opening for the pine needle longhorn beetle to escape. For the PVC film escape method, a 5cm x 5cm strip of PVC film was installed at the opening for the pine needle longhorn beetle to escape. For the hinge escape method, a 3cm x 3cm miniature hinge was installed above the opening for the pine needle longhorn beetle to escape. Pine branches and three logs approximately 3 cm in diameter were placed in a 3L insect collection bottle. Six pine sawyer beetles (male to female ratio 1:1) were then placed in the bottle. The escape rate and escape time of the pine sawyer beetles were observed over 3 days, with 3 replicates for each treatment.

[0060] Combination Figure 6 As shown, the impact of different escape methods on the number and time of escape of longhorn beetles is determined by... Figure 6 As can be seen from Figure A, when the opening is 3 cm above the bottom of the bottle, different escape methods do not have a significant effect on the number and time of escape of longhorn beetles (P > 0.05). Figure 7 As shown in Figure B, different escape methods, where the opening is flush with the bottom of the bottle, have a significant impact on the number and time of escape of longhorn beetles (P < 0.05). The PVC film and hinge methods resulted in the highest number of escaped beetles, with relatively shorter escape times of 33 hours and 21 hours, respectively. The experiment demonstrates that the opening position significantly affects the escape of the pine sawyer longhorn beetle; aligning the opening of the semi-open releaser collection bottle with the bottom of the bottle is more conducive to the escape of the pine sawyer longhorn beetle.

[0061] 2. Escape device size settings:

[0062] In 3 L insect collection bottles, holes of different diameters (D = 1 cm, 1.5 cm, 2 cm) and different numbers of holes (1, 2, 3) were made at the bottom of the bottles. Pine branches and three logs approximately 3 cm in diameter were placed inside the bottles, and six pine sawyer beetles (male to female ratio 1:1) were placed inside. The escape rate and escape time of the pine sawyer beetles were observed over 3 days, with three replicates for each treatment.

[0063] Combination Figure 7 As shown, the influence of the opening size and number of semi-open releaser insect collection bottles on the escape of longhorn beetles is determined by... Figure 7-A indicates that the diameter and number of openings in the insect collection bottle have a significant impact on the number of escaped *Pseudomonas pineensis* (df=8, F=2.436, P<0.05). The more openings in the collection bottle, the more escaped *Pseudomonas pineensis*. When the opening diameter is 1 cm, the average number of escaped *Pseudomonas pineensis* is 1.2. When the opening diameter is 1.5 cm or larger, the average number of escaped *Pseudomonas pineensis* is 4.1, which is 3.4 times that of the former.

[0064] The effect of the opening size and number of semi-open releaser insect collection bottles on the escape time of longhorn beetles is determined by... Figure 8 As shown in section -B, the diameter and number of openings in the insect collection bottle significantly affect the escape time of the pine sawyer beetle (df=8, F=4.17, P<0.05). The escape time significantly decreases with increasing opening diameter and number. When the opening diameter is 1 cm, the average escape time is 66.5 h. When the opening diameter is 1.5 cm or larger, the average escape time is 36.9 h, nearly 1.8 times shorter than the former. Therefore, an insect collection bottle diameter of 1.5 cm or larger is beneficial for the escape of the pine sawyer beetle.

[0065] 3. Insect collection bottle volume setting:

[0066] Select 3 L and 10 L insect collection bottles, and make 1.5 cm diameter holes in the bottom of the bottles, as well as different numbers of holes (1, 2, 3). Place pine branches and 3 pieces of wood with a diameter of about 3 cm in the collection bottles, and put 6 pine sawyer beetles in the collection bottles, with a female-to-male ratio of 1:1. Observe the escape rate and escape time of the pine sawyer beetles for 3 days, with 3 replicates for each treatment.

[0067] Combination Figure 8 As shown, the effect of different volumes of the semi-open releaser insect collection bottle on the escape of longhorn beetles is determined by... Figure 8 -A indicates that the volume of the insect collection bottle has a significant impact on the number of escaping *Pinus pineatus* (df=5, F=3.7, P=0.029<0.05). The larger the volume of the collection bottle, the fewer *Pinus pineatus* escape. From... Figure 9 -B indicates that the volume of the insect collection bottle has no significant effect on the escape time of the pine sawyer beetle (df=5, F=1.451, P=0.276<0.05). Different volumes of insect collection bottles have no significant effect on the escape time of the pine sawyer beetle.

[0068] 4. Selection of pine branch length:

[0069] Select 3 L and 10 L insect collection bottles, and place pine branches of different lengths inside each bottle to allow the pine sawyer beetle to escape (pine branches level with the bottle opening, 10 cm longer than the bottle opening, and 20 cm longer than the bottle opening). Place the pine branches and three pieces of wood with a diameter of approximately 3 cm inside each bottle, and then place six pine sawyer beetles in each bottle, with a female-to-male ratio of 1:1. Observe the escape rate and escape time of the pine sawyer beetles over 3 days, with three replicates for each treatment.

[0070] Combination Figure 9 As shown, the effect of different pine branch lengths on the escape of longhorn beetles is investigated using a 3L semi-open release device. Figure 9 -A indicates that the different lengths of pine branches in the insect collection bottle had no significant effect on the escape of longhorn beetles (df=2, F=0, P>0.05). The different lengths of pine branches in the collection bottle had little effect on the number of escaped longhorn beetles, with an average escape number of 5.33. The longhorn beetles used pine branches to escape, with an escape rate of 88%. From... Figure 10 -B indicates that the length of the pine branch in the insect collection bottle has no significant effect on the escape time of the pine longhorn beetle (df=2, F=1.643, P<0.05).

[0071] Combination Figure 10 As shown in the figure, in this scheme, the effect of different pine branch lengths on the escape of longhorn beetles in the 10 L semi-open release device is determined by... Figure 10 -A indicates that the different lengths of pine branches in the insect collection bottle had no significant effect on the escape of longhorn beetles (df=2, F=0.375, P=0.702>0.05). The different lengths of pine branches in the collection bottle had little effect on the number of escaped longhorn beetles, with an average escape number of 2. The longhorn beetles used pine branches to escape, with an escape rate of 33%. From... ​ -B indicates that the length of the pine branch in the insect collection bottle has no significant effect on the escape time of the pine sawyer beetle (df=2, F=1.878, P=0.233>0.05). The average escape time of the pine sawyer beetle is 33.28 h.

[0072] The above description is only a part of the embodiments of this utility model, and does not limit the scope of protection of this utility model. Any equivalent device or equivalent process transformation made based on the content of this utility model specification and drawings, or direct or indirect application in other related technical fields, are similarly included in the patent protection scope of this utility model.

Claims

1. A semi-open release device for the pine beetle mites, comprising a top cover (1), a cross baffle (2), an insect-collecting funnel (3), an insect-collecting bottle (4), and a lure (6). The upper and lower ends of the cross baffle (2) are fixedly connected to the top cover (1) and the insect-collecting funnel (3), respectively. A perforation (21) is provided in the middle of the cross baffle (2), and the lure (6) is located in the perforation (21). The large opening of the insect-collecting funnel (3) faces upward, and its small opening is connected to the insect-collecting bottle (4) through a connector (8). A channel for the pine beetle to enter the insect-collecting bottle (4) is provided between the insect-collecting funnel (3) and the insect-collecting bottle (4). At least one release hole (41) for the pine beetle to escape is provided at the lower part of the bottle body of the insect-collecting bottle (4).

2. The semi-opened phasenura lauracensis release device according to claim 1, characterized in that, The top cover (1) is a conical umbrella-shaped structure with its large opening facing downwards.

3. The semi-opened, porthole-like, phytoseiid mite release device of claim 1, wherein, The top cover (1) and the insect collecting funnel (3) are provided with four strip-shaped opening slots (11) that cooperate with the cross baffle (2). The upper and lower ends of the cross baffle (2) pass through the strip-shaped opening slots (11) on the top cover (1) and the insect collecting funnel (3) respectively, and are fixed by cable ties (23).

4. The semi-opened, pine bark beetle, Oligonychus ununguis, release device of claim 1, wherein, The lure (6) is suspended at the cutout (21) by a hook (5), and the hook (5) is fixed to the upper end of the cutout (21) of the cross baffle (2).

5. The semi-opened, pine bark beetle, Oligonychus ununguis, release device of claim 1, wherein, The top of the cover (1) is provided with a hanging hook (7) for suspending the release device on an external support.

6. The semi-opened phasocnemid mite releaser according to claim 1, wherein The bottom center of the cross baffle (2) is provided with a chamfer (22); the surface of the cross baffle (2) and the inner surface of the insect collecting funnel (3) are smooth.

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