Oukhypencha, Magnien, 2023

Magnien, Philippe, 2023, New genera, species and subspecies of tessaratomine true bugs (Heteroptera: Tessaratomidae, Tessaratominae), Zootaxa 5375 (4), pp. 533-549 : 548

Key to species and subspecies of Oukhypencha n. gn.

Identification of male specimens is rather straightforward from external characters, but for females, no usable characters could be found in habitus, examination of genitalia has been found necessary.

1 Males .............................................................................................. 2

– Females............................................................................................. 4

2 Posterior margin of pygophore concavely arched, joining lateral margin at almost right angle, with a small central V-notch........................................................................ O. ophthalmica sumaterensis n. subsp.

– Junction of posterior and lateral margins of pygophore not angular.............................................. 3

3 Pygophore about as long as large, posterior margin not rimmed, medial concavity almost imperceptible. O. clemenceae n. sp.

– Pygophore longer than large, posterior margin rimmed, medial concavity large, in shallow V-shape..... O. florenceae n. sp.

4 Sclerotized rings inconspicuous.......................................................... O. clemenceae n. sp.

– Sclerotized rings conspicuous........................................................................... 5

5 Posterior ductus widening distally at its opening in vagina........................................... O. stali n. sp.

– Posterior ductus of constant width on all its length from vagina to striated dilation.................................. 6

6 Striated dilation of posterior ductus only slightly larger than ductus (10 to 20 %).......... O. ophthalmica ophthalmica Stål

– Striated dilation of posterior ductus much larger than ductus (about 60 %).......... O. ophthalmica sumaterensis n. subsp.