Kachinocoris, Heiss, Ernst, 2012

Heiss, Ernst, 2012, Kachinocoris brevipennis n. gen., n. sp. in Cretaceous Burmese Amber (Hemiptera: Heteroptera: Aradidae), Zootaxa 3227, pp. 64-68 : 64-65

Kachinocoris n.gen.

Type species: Kachinocoris brevipennis n.sp.

Diagnosis. Differs from the abovementioned Aradidae species in Burmese amber by the anteriorly enlarged and rounded clypeus, the structure of antennae, and the short truncate corium.

Description. Brachypterous (?), small, about 3mm; surface of body densely covered with round tubercles these larger on head and thorax and smaller on legs and antennae; coloration of body and appendices stramineous, abdomen and ventral laterotergites with dark brown patches; apex of antennal segment IV brown.

Head: Longer than wide, clypeus apically enlarged and rounded reaching apex of antennal segment II; antennae short about 1.5x as long as width of head, segments I–III of subequal length, IV longest; rostrum as long as head and arising from an open atrium.

Pronotum: Distinctly wider than long; lateral margins sinuate converging anteriorly; disk with four distinct granulate carinae; posterior margin concave.

Scutellum: About as long as wide, lateral margins carinate, disk with a longitudinal carina at base, apex rounded.

Hemelytra: Corium slightly shorter than scutellum, of triangular shape with carinate lateral margins; no trace of a membrane preserved.

Abdomen: Of egg-shaped outline, lateral margins evenly rounded; deltg II–VII separated by transverse sutures, pattern of apodemal impressions not clearly recognizable but seemingly 2:1:1.

Venter: Sternites II–VII separated by transverse sutures, spiracles cannot be located with certainty but all seem to be ventral.

Legs: Unarmed, tarsi two-segmented, claws with pulvilli.

Etymology: Named after the Kachin state in Northern Myanmar ( Burma) from where this and most known Cretaceous Burmese Amber insects originate and <coris> (Greek) = bug.

Discussion. Because of the aberrant structure of clypeus, antennae, and corium, Kachinocoris n.gen. does neither conform to the fossil subfamily Arachaearadinae Heiss & Grimaldi 2002 nor to the extant Aradinae Brullé 1836 which never possess claws with pulvilli. Unless further material is available for study, its systematic position remains unclarified.