Kachinocoris brevipennis, Heiss, Ernst, 2012

Heiss, Ernst, 2012, Kachinocoris brevipennis n. gen., n. sp. in Cretaceous Burmese Amber (Hemiptera: Heteroptera: Aradidae), Zootaxa 3227, pp. 64-68 : 65-66

Kachinocoris brevipennis n.sp.

(Photo 1, Fig. 1–2 )

Holotype: Female in a triangular piece of Burmese amber from “Kachin State in Myanmar ( Burma) 12x10 x 2mm; good visibility of dorsal side, cuticula of ventral abdomen lacking except a small lateral fringe of mediosternites II– VI (eaten by scavengers?); legs and antennae partly depressed. Syninclusion: a small Hymenoptera.

Description. Head: Distinctly longer than wide across eyes (24/19); clypeus enlarged and rounded anteriorly reaching apex of antennal segment II, surface with round flat tubercles dorsally and conical ones laterally; antenniferous lobes short and wide, anterolaterally rounded, flattened and raised; antennae 1.52x as long as width of head (29/19), segment I cylindrical as long as III but shorter than II, segments II and III triangular in cross section (depressed?), their apices beset with longer tubercles, IV fusiform and longest, apex pilose; length of segments I/II/ III/IV = 6/ 7/6/10; eyes laterally protruding: postocular lobes roundly converging toward constricted collar; vertex flat and granulate delimited laterally by two (1+1) longitudinal furrows; rostrum as long as head, arising from a round open atrium at middle of clypeus, bucculae short and developed only on basal, no distinct rostral groove present.

Pronotum: Wider than long (26/16); lateral margins sinuate converging anteriorly, anterolateral angles rounded, beset with larger conical tubercles bearing a stiff bristle; disk rather flat with four longitudinal granulate carinae, median ones reaching from anterior to posterior margin, two lateral ones end at the round depressions laterally of median carinae; posterior margin concave.

Scutellum: Large, about as wide as long (19/20); lateral margins converging posteriorly, carinate with large granulation on basal half, apex widely rounded projecting over posterior margin of corium; disk with a triangular median carina on basal half consisting of larger round granules.

Hemelytra: Corium shorter than scutellum, lateral margins rounded and carinate, posterolateral angles narrowly rounded, posterior margin curved toward scutellum, no trace of a membrane visible.

Abdomen: Outline of abdomen egg-shaped, lateral margins evenly rounded beset with dispersed setae; deltg II–VII reflexed laterally separated by sutures, deltg II and mtg II exposed and visible laterally of scutellum; tergal plate consisting of fused mtg III–VI, faint transverse sinuate sutures indicating the limits of segments; surface slightly elevated along midline with stellate flat tubercles; transverse scent gland openings equidistally placed on posterior margins of mtg III, IV, and V, these sinuately produced posteriorly; posterior margin of tergite VII sinuate at middle accommodating transverse tergite VIII, tergite IX triangularly produced posteriorly and visible from above.

Legs: Femora fused to trochanters, moderately incrassate; tibiae straight, claws with apically enlarged pulvilli. Measurements: Length 3.05mm; width / length of abdomen 65/56; width / length of tergal plate 47/40. Etymology. Referring to the reduced hemelytra <brevis> (Latin) = short and <penna> (Latin) = wing.

PHOTO 1. Kachinocoris brevipennis n.gen.,n.sp., dorsal view.

Figures

FIGURES 1 – 2. Kachinocoris brevipennis n. gen., n. sp. 1 — Reconstruction of head and pronotum dorsal view; 2 — head ventral view. Scale: 0.2 mm.