1. Metasoma with terga 3–5 conspicuously setose ...2
- Metasoma with terga 3–5 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
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