Bai, Xiaoshuan, Heiss, Ernst & Cai, Wanzhi, 2018, Reconsideration of the apterous carventine genus Crassocoris and description of Paracrassocoris gen. nov. from China (Hemiptera: Heteroptera: Aradidae), Zootaxa 4455 (3), pp. 537-546: 542

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gen. nov.

Paracrassocoris  gen. nov.

Type species. Paracrassocoris hekouensis  sp. nov.

Diagnosis. Apterous, of medium size, body elongate ovate; coloration blackish brown, surface glabrous; lateral margins of body, legs and antennae with setigerous tubercles; thoracic segments fused to mtg I+II, a median longitudinal ridge along meso- and metanotum is followed by a deep furrow with a median carina on fused mtg I+II; spiracles II–IV ventral, V–VII lateral and visible from above.

Paracrassocoris  gen. nov. resembles Crassocoris  , it is however distinguished from the latter genus by a set of morphological features: longer head, lateral margins of pronotum attenuated with acute anterolateral angles, median depression of mtg I+II narrow with a longitudinal carina (vs. shorter postocular portion of head, pronotal lobes subrectangular, anterolateral angles subangular, median depression on mtg I+II widening posteriorly with an inverted Y-shaped carina); pygophore shorter (vs. longer).

Description. Head. Longer than wide across eyes; genae slender, short; antenniferous tubercles stout, conical, apically pointed; eyes small, semiglobose, with convex face; postocular tubercles small and not reaching outer margin of eyes; converging posteriorly to constricted neck; antennae long and slender, first segment stout and clavate twice as long as second, the latter shortest and cylindrical, third longest and cylindrical, fourth fusiform; rostrum arising from a slit-like opening not reaching limits of rostral groove.

Thorax and mtg I+II. Pronotum attenuated anteriorly, anterolateral angles produced and acute, tuberculate, not protruding beyond collar, disc with medial groove; meso- metanota separated only laterally, the median subpentagonal ridge with a longitudinal sulcus; metanotum laterally of median ridge deeply excavated, separated from mtg I and II by thin furrows; lateral margins of thorax doubled and incrassate with deep cleft between pro-, meso-, and metanota; mtg I+II fused, with a deep median groove with a thin longitudinal carina flanked by a pair of oblique elevated ridges and rugosities.

Abdomen. Mtg III–VI fused to a subpentagonal tergal plate, elevated on median line, and with usual pattern of large and small callous spots and dots; mtg VII strongly elevated posteriorly in male and female; deltg II+III completely fused, spiracles II–IV ventral, V–VII lateral on dorsally reflexed vltg V–VII and visible from above.

Venter. Prosternum raised and with Y-shaped carina at middle, flanked by a pair of depressions; meso- and metasterna fused, flattened medially with a deep and wide transversal depression marking the segmental borders.

Etymology. The generic name is formed from the Greek prefix ‘para-’ = near to and the generic name Crassocoris  , reflecting the similarity of the two genera.

Distribution. China (Yunnan).