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Trissolcus japonicus
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Scelionidae
Genus: Trissolcus
Species:
T. japonicus
Binomial name
Trissolcus japonicus
(Ashmead, 1904)
Synonyms [1]

Trissolcus halyomorphae Yang et al, 2009

Trissolcus japonicus, the samurai wasp, is a parasitoid wasp species in the family Scelionidae, native to east Asia but now found in Europe, North America, and Chile. [2] [3] It is chiefly known for parasitizing Halyomorpha halys (brown marmorated stink bug). [4] It deposits eggs into the eggs of the stink bug, and as the wasp larvae develop, they kill the stink bug eggs. A single adult wasp emerges from each stink bug egg. [5]

Taxonomy

Trissolcus japonicus was originally described by American entomologist William Harris Ashmead in 1904, [6] and transferred to the genus Trissolcus in 1968. [7] All species within the genus Trissolcus are egg parasitoids of Pentatomoidea (stink bugs and their allies). [8] Trissolcus halyomorphae was in use from 2009, but has since been classified as a junior synonym of Trissolcus japonicus. [9] [10]

Female T. japonicus about to oviposit in the eggs of brown marmorated stink bug.
T. japonicus specimens on a US dime.

Description

Trissolcus japonicus adults are small black wasps with orange and black legs and antennae. The adult samurai wasp is 1–2 millimetres (364564 in) in length. The size of the wasp depends on the size of the host egg from which it emerged. [11] It does not sting people. [12]

Distribution

The samurai wasp is native to Eastern Asia, including China, Japan, Korea, and Taiwan. [13]

In 2014, two adventive populations were found in the United States during surveys to identify which North American parasitoids might be attacking brown marmorated stink bug. [2] [14] Subsequent genetic testing showed these wild populations were self-introduced: they were not related to each other, or to the laboratory strain of parasitoids housed in quarantine for biosafety testing since 2007. [15] An adventive European population was discovered during similar surveys in Switzerland in 2017. [16]

Biological control

Trissolcus japonicus is currently the subject of biological control programs against the brown marmorated stink bug (BMSB) in the US, Europe, and New Zealand. [17] In the United States, it will likely take years for the wasps to build up large enough densities in the wild to have a measurable impact on BMSB populations, but efforts are under way to augment wild populations with laboratory reared specimens. [18] [19] Recent redistribution efforts of Trissolcus japonicus in New York State also engages Citizen Science project participants in reducing urban BMSB populations. [20] In New Zealand, host range testing has shown it attacks the endemic alpine shield bug ( Hypsithocus hudsonae) in laboratory tests when a parasitoid is confined with an egg mass. [21]

Life cycle

In its native range, the samurai wasp is able to complete up to 10 generations per year, while its primary host, brown marmorated stink bug, completes up to 2. [13] Female wasps lay on average 42 eggs, preferring to oviposit into host eggs younger than 3 days old. Males hatch first and mate with their sisters. [22]

References

  1. ^ Talamas, Elijah J.; Buffington, Matthew; Hoelmer, Kim (2013-08-01). "New synonymy of Trissolcus halyomorphae Yang". Journal of Hymenoptera Research. 33: 113–117. doi: 10.3897/jhr.33.5627.
  2. ^ a b Talamas, Elijah J.; Herlihy, Megan V.; Dieckhoff, Christine; Hoelmer, Kim A.; Buffington, Matthew; Bon, Marie-Claude; Weber, Donald C. (2015). "Trissolcus japonicus (Ashmead) (Hymenoptera, Scelionidae) emerges in North America". Journal of Hymenoptera Research. 43: 119–128. doi: 10.3897/jhr.43.4661. ISSN  1314-2607.
  3. ^ Leskey, Tracy C.; Nielsen, Anne L. (2018-01-07). "Impact of the Invasive Brown Marmorated Stink Bug in North America and Europe: History, Biology, Ecology, and Management". Annual Review of Entomology. 63 (1): 599–618. doi: 10.1146/annurev-ento-020117-043226. ISSN  0066-4170. PMID  29068708. S2CID  207595756.
  4. ^ Pfeiffer, Douglas G. (March 30, 2009). "Brown Marmorated Stink Bug". Virginia Tech Department of Entomology. Retrieved January 10, 2013.
  5. ^ "Trissolcus halyomorphae". Oregon State University Department of Horticulture. Archived from the original on April 7, 2014. Retrieved January 10, 2012.
  6. ^ Ashmead, William Harris (1904). "Descriptions of new Hymenoptera from Japan – I". Journal of the New York Entomological Society. 12: 65–84.
  7. ^ Masner, Lubomir; Muesebeck, Carl F. W. (1968). "The Types of Proctotrupoidea (Hymenoptera) in the United States National Museum". Bulletin of the United States National Museum (270): 1–143. doi: 10.5479/si.03629236.270. hdl: 10088/10144.
  8. ^ Johnson, Norman F. (1984). "Revision of the Nearctic species of the Trissolcus flavipes group (Hymenoptera: Scelionidae)". Proceedings of the Entomological Society of Washington. 86: 797–807. Archived from the original on 2018-11-29. Retrieved 2018-11-29.
  9. ^ Talamas, Elijah; Buffington, Matthew; Hoelmer, Kim (2013). "New synonymy of Trissolcus halyomorphae Yang". Journal of Hymenoptera Research. 33: 113–117. doi: 10.3897/jhr.33.5627. ISSN  1314-2607.
  10. ^ Rice, Kevin B.; Bergh, Chris J.; Bergmann, Erik J.; Biddinger, Dave J.; Dieckhoff, Christine; Dively, Galen; Fraser, Hannah; Gariepy, Tara; Hamilton, George (2014). "Biology, Ecology, and Management of Brown Marmorated Stink Bug (Hemiptera: Pentatomidae)". Journal of Integrated Pest Management. 5 (3): 1–13. doi: 10.1603/ipm14002. hdl: 10919/73730. ISSN  2155-7470.
  11. ^ "common name: Samurai wasp; scientific name: Trissolcus japonicus (Ashmead) (Insecta: Hymenoptera: Scelionidae: Telenominae)". entnemdept.ufl.edu.
  12. ^ "7 Things to know about samurai wasps, a natural enemy of brown marmorated stink bugs". Department of Entomology. 3 November 2019.
  13. ^ a b Yang, Zhong-Qi; Yao, Yan-Xia; Qiu, Lan-Fen; Li, Zhong-Xin (2009). "A New Species of Trissolcus (Hymenoptera: Scelionidae) Parasitizing Eggs of Halyomorpha halys (Heteroptera: Pentatomidae) in China with Comments on Its Biology". Annals of the Entomological Society of America. 102 (1): 39–47. doi: 10.1603/008.102.0104. ISSN  0013-8746. S2CID  55288032.
  14. ^ Herlihy, Megan V.; Talamas, Elijah J.; Weber, Donald C. (2016). "Attack and Success of Native and Exotic Parasitoids on Eggs of Halyomorpha halys in Three Maryland Habitats". PLOS ONE. 11 (3): e0150275. Bibcode: 2016PLoSO..1150275H. doi: 10.1371/journal.pone.0150275. ISSN  1932-6203. PMC  4794195. PMID  26983012.
  15. ^ Milnes, Joshua M.; Wiman, Nik G.; Talamas, Elijah J.; Brunner, Jay F.; Hoelmer, Kim A.; Buffington, Matthew L.; Beers, Elizabeth H. (2016). "Discovery of an Exotic Egg Parasitoid of the Brown Marmorated Stink Bug, Halyomorpha halys (Stål) in the Pacific Northwest". Proceedings of the Entomological Society of Washington. 118 (3): 466–470. doi: 10.4289/0013-8797.118.3.466. ISSN  0013-8797. S2CID  89561247.
  16. ^ Stahl, Judith; Tortorici, Francesco; Pontini, Marianna; Bon, Marie-Claude; Hoelmer, Kim; Marazzi, Cristina; Tavella, Luciana; Haye, Tim (2018). "First discovery of adventive populations of Trissolcus japonicus in Europe". Journal of Pest Science. 92 (2): 371–379. doi: 10.1007/s10340-018-1061-2. hdl: 2318/1685812. ISSN  1612-4758.
  17. ^ Charles, J. G.; Avila, G. A.; Hoelmer, Kim A.; Hunt, Sophie; Gardner-Gee, Robin; MacDonald, Frances; Davis, Vicky (August 2019). "Experimental assessment of the biosafety of Trissolcus japonicus in New Zealand, prior to the anticipated arrival of the invasive pest Halyomorpha halys". BioControl. 64 (4): 367–379. Bibcode: 2019BioCo..64..367C. doi: 10.1007/s10526-019-09949-x. ISSN  1386-6141. S2CID  195847293.
  18. ^ Szűcs, Marianna; Gut, Larry; Wilson, Julianna; Pote, John (July 24, 2019). "Biological control of brown marmorated stink bug in Michigan". Michigan State University, Department of Entymology. Retrieved December 3, 2019.
  19. ^ Jentsch, Peter (Winter 2017). "Expanding the Range of the Samurai Wasp, Trissolcus japonicus, in New York Orchards" (PDF). Fruit Quarterly. 25 (4). New York State Horticultural Society. Retrieved December 3, 2019.
  20. ^ Jentsch, Peter J. (March 13, 2019). "Citizen Science Efforts for Redistribution of Samurai Wasp in NYS". Cornell University, Department of Entomology, Hudson Valley Laboratory. Retrieved December 3, 2019.
  21. ^ Saunders, Thomas E; Avila, Gonzalo A; Holwell, Gregory I (2021-03-18). "Pre-emptive host-specificity testing of Trissolcus japonicus (Ashmead) (Hymenoptera: Scelionidae) reveals high parasitism levels against the endemic New Zealand alpine shield bug in laboratory no-choice tests". Austral Entomology. 60 (2): 411–421. doi: 10.1111/aen.12532. ISSN  2052-174X. S2CID  233691920.
  22. ^ Qui, Lanfen; Yang, Zhongqi; Tao, Wanqiang (2007). 茶翅蝽沟卵蜂生物学特性和自然种群动态 [Biology and Population Dynamics of Trissolcus halyomorphae]. 林业科学 [Scientia Silvae Sinicae] (in Simplified Chinese). 43 (11): 62–65. doi: 10.11707/j.1001-7488.20071111. ISSN  1001-7488.