Placoscelini, Stal, 1868

Brailovsky, Harry, 2021, Illustrated key to the genera included in the tribe Acanthocephalini (Hemiptera Heteroptera: Coreidae: Coreinae), with descriptions of three new genera, seven new species, new taxonomic rearrangements, and a key to genera of Placoscelini, Zootaxa 5082 (5), pp. 457-475 : 474

Key to the known genera of Placoscelini *

*Modifided from Brailovsky and Barrera 2012.

1 Hind tibiae simple, not expanded......................................................................... 2

- Hind tibiae expanded.................................................................................. 3

2 Ocellar tubercle raised; inner face of male hind tibiae armed with two rows of stout spines; postocular tubercle exposed; body surface with bluish green reflections; posteroventral edge of male genital capsule with median, large, and bifid plate................................................................................... Bermejanus Brailovsky, 2018

- Ocellar tubercle flat; inner face of male hind tibiae unarmed; postocular tubercle tiny exposed; body surface without bluish green reflections; posteroventral edge of male genital capsule simple, rounded or broadly truncate, and with or without median notch............................................................................... Nyttum Spinola, 1837

3 Hind tibiae expanded into a long, thin, narrow plate covering ¾ of the total length of the tibiae; inner expansion of hind tibiae strongly spined in males of some species; outer expansion of hind tibiae never scalloped; head dorsally slightly convex above eyes; eyes in lateral view below dorsal surface of head..................................... Plaxiscelis Spinola, 1837

- Hind tibiae with foliaceous expansion; inner expansion of hind tibiae never spined; outer expansion of hind tibiae scalloped; head dorsally flat; eyes in lateral view at same the level or above the dorsal surface of head.......................... 4

4 Head with neck transversely black; pronotal disc and scutellar disc without yellowish orange or dark yellow longitudinal medial stripe; rostral segment IV the longest; callar region raised, and impunctate; corial veins not uniformly yellow; pro-, meso-, and metapleura impunctate, except the posterior margin with finest punctuation............... Stenoscelidea Westwood, 1842

- Head with neck transversely yellow to yellowish orange, except for two broad longitudinal black stripes running lateral to mid line; pronotal disc and scutellar disc with yellowish orange to dark yellow longitudinal medial stripe; rostral segment I the longest; callar region almost flat, finely punctate and with few low tubercles; corial veins yellow; pro-, meso-, and metapleura densely and deeply punctate.............................................. Stenoeurilla Brailovsky & Barrera, 2012