1. Fore wing with broad brown
central infuscation (A); propodeum with complete medial longitudinal
carina (B); axillar grooves meet at trans-scutellar sulcus (B); hind
femur and fore tibia all black ...Tanaostigma
lasallei van Noort, 2020
- Fore wing with narrow transverse band
of dark setae (a); propodeum either without carina or with the
medial longitudinal carina only present anteriorly for a very short
distance (b); axillar grooves meet trans-scutellar sulcus
independently (b); hind femur and fore tibia with distal end
orangish-brown ...2
2. Forewing band with fewer, more
pale, and less densely distributed setae (A); forewing twice as long
as wide (A); postmarginal vein as long as stigmal vein (A);
squamiform white setae stouter and individually more widely spaced
on head (B) and other areas of the body; mesopleuron with coarse
reticulate sculpturing (C); metanotal trough with three large
metanotal fovea, not extending medially beyond small central
metanotal fovea ...Tanaostigma
mulu van Noort, 2020
- Forewing band with numerous dark,
densely distributed setae (a); forewing 2.5 times as long as wide
(a); postmarginal vein shorter than stigmal vein (a); squamiform
white setae more elongate and densely distributed on head (b) and
other areas of the body; mesopleuron with finer, more numerous
reticulate sculpturing (c); metanotal trough with a single large
metanotal fovea laterad of small central fovea, with narrow elongate
fovea anteriorly situated, with three pit-like fovea present
medially of central metanotal fovea ...Tanaostigma
ukumbusho van Noort, 2020
