Orasema acuminata

Orasema acuminata
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Hymenoptera
Family:	Eucharitidae
Subfamily:	Oraseminae
Genus:	Orasema
Species:	O. acuminata
Binomial name
	Orasema acuminata; Baker & Heraty, 2020

Identification

Female. Length 3.2–3.7 mm ( Fig. 27A ). Color. Head and mesosoma iridescent green-blue-purple. Pedicle brown. Femora pale brown, tips yellow. Head ( Fig. 27B ). HW:HH = 1.0–1.2; face rugose-reticulate; IOD:EH = 1.4–1.6; MS:EH = 0.6–0.8; malar depression weakly impressed between mouth and eye margin; supraclypeal area longer than broad, weakly sculptured; anteclypeus distinct, nearly straight. FL:HH = 0.9–1.0; F2L:F2W = 1.6–1.8, F2L:F3L = 1.1–1.2; funiculars subequal in length distally, equal in width; clava subconical ( Fig. 27D ). Mesosoma ( Fig. 27C, F, G ) ML:MH = 1.3–1.6. Axilla dorsally rounded, on roughly the same plane as the mesoscutellum; scutoscutellar sulcus meeting transscutal articulation medially; frenal line indicated by a strong dorsal carina; axillular sulcus indicated by a strong longitudinal carina. Upper mesepimeron areolate; lower mesepimeron rugose-reticulate. Metepisternum rugose-areolate. HCL:HCW = 1.6–2.0, weakly reticulate; HFL:HFW = 4.9–5.7. FWL:FWW = 2.7–2.9, FWL:ML = 2.1–2.4; basal area and speculum bare, costal cell and wing disc densely setose; submarginal vein with small setae; stigmal vein perpendicular to anterior wing margin. Metasoma. PTL:PTW = 2.2–2.4, PTL:HCL = 1.1–1.3, lateral margin with weak longitudinal carina. Apical setae of hypopygium with several long setae on either side of the midline. Ovipositor not visible.

Distribution

Ecuador, Peru

Habitat

Biology

Unknown.

Nomenclature

Description

References

Baker AJ, Heraty JM. The New World ant parasitoid genus Orasema (Hymenoptera: Eucharitidae). Zootaxa. 2020 Nov 30;4888(1):zootaxa.4888.1.1. doi: 10.11646/zootaxa.4888.1.1. PMID: 33311254.

Baker, A.J., Heraty, J.M., Mottern, J., Hang, J.Z., Hines, H.M., Lemmon, A.R., Lemmon, E.M. 2019. Inverse dispersal patterns in a group of ant parasitoids (Hymenoptera: Eucharitidae: Oraseminae) and their ant hosts. Systematic Entomology 45: 1–19 (doi:10.1111/syen.12371).

Carey, B., Visscher, K., & Heraty, J. (2012). Nectary use for gaining access to an ant host by the parasitoid Orasema simulatrix (Hymenoptera, Eucharitidae). Journal of Hymenoptera Research 27: 47-65.

Gahan, A.B. (1940). A contribution to the knowledge of the Eucharidae (Hymenoptera: Chalcidoidea). Proceedings of the United States National Museum 88: 425-458.

Heraty, J.M. Classification and evolution of the Oraseminae in the Old World, including revision of two closely related genera of Eucharitinae (Hymenoptera: Eucharitidae). JOURBOOK: Life Sciences Contributions, Royal Ontario Museum VOLUME: 157 PAGES: vii+174pp. (1994).

Heraty, J., Hawks, D., Kostecki, J.S. and Carmichael, A. (2004). Phylogeny and behaviour of the Gollumiellinae, a new subfamily of the ant-parasitic Eucharitidae (Hymenoptera: Chalcidoidea). Systematic Entomology 29(4): 544-559.

Munro, J. B., Heraty, J. M., Burks, R. A., Hawks, D., Mottern, J., Cruaud, A., Rasplus, J.-Y. & Jansta, P. (2011). A molecular phylogeny of the Chalcidoidea (Hymenoptera). PLoS One 6(11): e27023.

Murray, E. A., Carmichael, A. E., & Heraty, J. M. (2013). Ancient host shifts followed by host conservatism in a group of ant parasitoids. Proceedings of the Royal Society B: Biological Sciences 280(1759): 20130495.

Wheeler WM (1907) The polymorphism of ants with an account of some singular abnormalities due to parasitism. Bulletin of the American Museum of Natural History 23: 1–93.