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Oberthuerella nigrescens Benoit

(Life: Kingdom: Metazoa (animals); Phylum: Arthropoda; Class: Hexapoda; Order: Hymenoptera; Superfamily: Cynipoidea;  Family: Liopteridae; Subfamily: Oberthuerellinae; Genus: Oberthuerella)

Oberthuerella nigrescens Benoit 1955. Holotype: in Africa Museum, Tervuren (MRAC). Type Locality: Eala, Democratic Republic of Congo.

Oberthuerella_nigrescens_HT_female_habitus_dorsal Oberthuerella_nigrescens_HT_female_habitus_lateral
Oberthuerella_nigrescens_HT_female_head_frontal Oberthuerella_nigrescens_HT_female_head_mesosoma_dorsal
Oberthuerella_nigrescens_HT_female_head_mesosoma_lateral Oberthuerella_nigrescens_HT_female_antenna
Oberthuerella_nigrescens_HT_female_scutellum_dorsolat Oberthuerella_nigrescens_HT_female_scutellum_dorsal
Oberthuerella_nigrescens_HT_female_metasoma_dorsal Oberthuerella_nigrescens_HT_female_metasoma_lateral
Oberthuerella_nigrescens_HT_female_hind_femur Oberthuerella_nigrescens_HT_female_wings
Oberthuerella_nigrescens_HT_female_forewing_SM Oberthuerella_nigrescens_HT_female_hindwing_SM
Oberthuerella_nigrescens_HT_female_slide Oberthuerella_nigrescens_HT_female_labels

Distribution

Democratic Republic of Congo. MAP

Diagnosis

Distinguished from other species of Oberthuerella by having the head, mesosoma and metasoma all dark brown/black (in other species, the metasoma is yellow/orange); the only other species that shares this trait is O. kibalensis, and this species can be differentiated based on slight color differences in setae on the hind legs and metasoma, where in O. kibalensis the setae are silvery-white, and in O. nigrescens, the setae are a golden-yellow.  Also, in O. kibalensis, the lateral aspect of the pronotum is deeply costate, and in O. nigrescens, the same is foveate with remnant traces of costae.

Biology

Unknown.

References

Benoit, P.L.G. 1955. Les Liopteridae Oberthurellinae du Congo Belge. Revue de Zoologie et de Botanique Africaines 52: 283293.

Buffington, M.L. & van Noort, S. 2012. Revision of the Afrotropical Oberthuerellinae (Cynipoidea: Liopteridae). Zookeys 202: 1-154.

Quinlan, J. 1979. A revisionary classification of the Cynipoidea (Hymenoptera) of the Ethiopian Zoogeographical Region. Aspicerinae (Figitidae) and Oberthuerellinae (Liopteridae). Bulletin of the British Museum of Natural History (Entomology) 39: 85-133.

Ronquist, F. 1995. Phylogeny and classification of the Liopteridae, an archaic group of cynipoid wasps (Hymenoptera). Entomologica Scandinavica Supplement 46: 1-74.

Credits

Photographs Simon van Noort (Iziko Museums of South Africa)

Matt Buffington (Systematic Entomology Laboratory, USDA/ARS) and Mattias Forshage (Swedish Museum of Natural History) both played an integral role in the development of the Cynipoidea pages.

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Web author Simon van Noort (Iziko South African Museum)

 

Citation: van Noort, S. 2021. WaspWeb: Hymenoptera of the Afrotropical region. URL: www.waspweb.org (accessed on <day/month/year>).

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