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Key to Afrotropical Oberthuerella species

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

 

ClassificationLiopteridae keysCynipoidea keys


1. Metasoma with terga 35 conspicuously setose ...2

 

- Metasoma with terga 35 glabrous or with sparse setae on tergite 5 ...3

 


2. Mesoscutum covered with long, dense, pale setae; speculum shagreened; metasoma reddish-brown with white setae ...Oberthuerella simba

 

- Mesoscutum covered with long, sparse, dark setae; speculum smooth; metasoma burnt-orange with orange setae ...Oberthuerella aureopilosa

 


3. Petiole slightly more than 3X longer than wide; forewing with contrasting dark patch on costa, basal to a white distal subquadrate window; areolet absent, cubital cell open along ventral margin ...Oberthuerella transiens

 

- Petiole not more than 2X longer than wide. Forewing more evenly infuscate; areolet present or absent, cubital cell open or closed along ventral margin ...4

 


4. Median keel of face very short, terminating at a point between or just ventral of a horizontal line drawn between toruli ...5

 

- Median keel long, extending beyond horizontal line drawn between toruli ...6

 


5. Scutellar spine, in dorsal view, as long as petiole ...Oberthuerella lenticularis

 

- Scutellar spine, in dorsal view, much shorter than petiole ...Oberthuerella triformis

 


6. Pronotum dorsally and laterally distinctly vertically striate, wavelike, with only faint fovea ...7

 

- Pronotum dorsally and laterally foveate, with only slight striations present (if at all) ...9

 


7. Head, mesosoma and metasoma all black to dark brownish/red; peglike setae absent on posterior margin of T-6 and T-7 ...Oberthuerella kibalensis

 

- Head and mesosoma black to dark brown, metasoma burnt orange; peglike setae present on posterior margin of T-6 and T-7 (arrowed) ...8

 


8. Two distinct scutellar fovea present, each subdivided into 5 subfovea, resulting in a total of 10 subfovea ...Oberthuerella breviscutellaris

 

- Single large central scutellar fovea present with two lateral fovea, each divided into 2 subfovea, resulting in 5 fovea in total ...Oberthuerella sharkeyi

 


9. Speculum shagreened to smooth dorsally, ventrally smooth ...10

 

- Speculum crenulate dorsally, gently shagreened ventrally ...Oberthuerella cyclopia

 


10. Middle to lower face with two parallel, dorso-ventral grooves present, composed of fine, horizontal striations; clypeo-pleurostomal line present ...Oberthuerella eschara

 

- Middle to lower face horizontally striate or foveate, dorso-ventral grooves lacking; clypeo-pleurostomal line absent, area typically horizontally striate or punctate ...11

 


11. Pronotum and mesoscutum with smooth to shagreened space between individual fovea ...15

 

- Pronotum and mesoscutum with fovea abutting each other, resulting in a craggy appearance ...12

 


12. Raised longitudinally triangular space present along midline of face, terminating at dorsal margin of clypeus; scutellar fovea divided into 3 subfovea ...Oberthuerella longicaudata

 

- Raised triangular space absent from face, instead, area is deeply costate-foveate, with or without thin longitudinal keel; scutellar fovea subdivided into 5-6 subfovea ...13

 


13. Head, mesosoma, and legs black to very dark brown ...16

 

- Head and mesosoma black to dark brown, legs orange/yellow ...14

 


14. Longitudinal facial keel narrow, extending from inter-torular space to dorsal margin of clypeus ...Oberthuerella longispinosa

 

- Longitudinal facial keel narrow dorsally, becoming irregularly widened ventrally, ending before the dorsal margin of the clypeus ...Oberthuerella crassicornis

 


15. Anterior base of scutellum with 5 sub-fovea; admedial lines indistinct to absent; mesoscutal surface dominated by shallow fovea, with more distinct horizontal striations ...Oberthuerella pardolatus

 

- Anterior base of scutellum with 7 sub-fovea; admedial lines distinct; mesoscutal surface with distinct fovea ...Oberthuerella tibialis

 


16. Metasoma entirely dark brown or black ...Oberthuerella nigrescens

 

- Metasoma entirely orange or yellow ...Oberthuerella abscinda


References

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.

van Noort, S, Buffington ML & Forshage, M. 2015. Afrotropical Cynipoidea (Hymenoptera). ZooKeys 493: 1-176. doi: 10.3897/zookeys.493.6353

Credits

Photographs Simon van Noort (Iziko Museums of South Africa) or Matt Buffington (Systematic Entomology Laboratory, USDA/ARS).


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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