Trissolcus oenone

Trissolcus oenone is a parasitoid wasp in the family Platygastridae, native to Australia and New Zealand. It parasitises the eggs of stink bugs (Pentatomidae), but little is known about its biology.

Trissolcus oenone
Trissolcus oenone male
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Platygastridae
Genus: Trissolcus
Species:
T. oenone
Binomial name
Trissolcus oenone
(Dodd, 1913)
Synonyms
  • Telenomus oenone Dodd, 1913
  • Telenomus otho Dodd, 1914
  • Trissolcus otho (Dodd, 1914)
  • Telenomus obliteratus Dodd, 1914
  • Trissolcus obliteratus (Dodd, 1914)
  • Telenomus biproruli Girault, 1926
  • Trissolcus biproruli (Girault, 1926)
  • Telenomus wilsoni Dodd, 1930
  • Trissolcus wilsoni (Dodd, 1930)

Description

Trissolcus oenone is a small black wasp, 1–2mm in length (depending on host), and shares many morphological similarities with other Australian Trissolcus species.[1] The New Zealand population can generally be separated from other New Zealand Trissolcus species based on the colour of parasitised eggs, and the colour of the legs and antennae.[2] Pentatomid eggs parasitised by Trissolcus oenone develop a black ring near the top of the egg, whereas those parasitised by T. basalis turn almost entirely black. Adult specimens of T. oenone have black patches on the bases of the legs, while T. basalis legs are uniformly orange.[2]

Female specimen showing the clubbed antennae characteristic in female scelionid parasitoids.

Ecology

Trissolcus oenone is very common in Australia where it is known to parasitise the eggs of Biprorulis bibax, Cermatulus nasalis, Cuspicona privata, Nezara viridula, Oechalia consocialis, Oechalia schellenbergii, and Plautia affinis.[1][3][4] In New Zealand, T. oenone has been recorded from native species Cermatulus nasalis and Glaucias amyoti, and the introduced species Cuspicona simplex, Dictyotus caenosus, Monteithiella humeralis, and Oechalia schellenbergii.[2][5] Female parasitoids lay an egg into a host egg, and the emerging wasp larva develops inside the host egg. The length of development depends on the host species and temperature.[6]

References
  1. Johnson, N. F. (1991). "Revision of Australasian Trissolcus species (Hymenoptera : Scelionidae)". Invertebrate Systematics. 5 (1): 211. doi:10.1071/IT9910211. ISSN 1445-5226 – via CSIRO.
  2. Martin, Nicholas (2018). "Native shield-bug egg parasitoid - Trissolcus oenone". New Zealand Arthropod Factsheet Series.
  3. "Trissolcus oenone". Atlas of Living Australia. Retrieved 8 July 2020.
  4. Coombs, M; Khan, Sa (June 1998). "Population levels and natural enemies of Plautia affinis Dallas (Hemiptera: Pentatomidae) on raspberry, Rubus idaeus L., in south-eastern Queensland". Australian Journal of Entomology. 37 (2): 125–129. doi:10.1111/j.1440-6055.1998.tb01559.x.
  5. Cumber, Ron A. (1964). "The egg-parasite complex (Scelionidae: Hymenoptera) of shield bugs (Pentatomidae, Acanthosomidae: Heteroptera) in New Zealand". New Zealand journal of science. 7: 536–554 – via bugz.org.nz.
  6. James, David G.; Warren, Glen N. (1991). "Effect of temperature on development, survival, longevity and fecundity of Trissolcus oenone Dodd (Hymenoptera: Scelionidae)". Australian Journal of Entomology. 30 (4): 303–306. doi:10.1111/j.1440-6055.1991.tb00441.x. ISSN 1326-6756.
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