Crassocoris BAI, HEISS & CAI, 2007

Bai, X., Heiss, E. & Cai, W., 2007, A new apterous genus and species of Carventinae from China (Heteroptera: Aradidae), Linzer biologische Beiträge 39 (1), pp. 45-50 : 46

Crassocoris BAI, HEISS & CAI , gen. nov.

T y p e s p e c i e s o f g e n u s Crassocoris hsiaoi BAI, HEISS & CAI nov.sp.

D i a g n o s i s: Apterous. Medium sized. Body elongate ovate. Dorsal and ventral surfaces partly covered with grayish incrustation, forming a curious pattern, only lateral borders with a few short bristles. Head longer than width across eyes; genae slender, short; antenniferous tubercles stout, conical, apically pointed; eyes small, semiglobose, with convex face; postocular margins sinuate and converging posteriorly; vertex raised medially, forming a longitudinal ridge with the elevated clypeus ( Fig. 3 ); antennae long and slender, first and third segments subequal in length, second shortest, first stout, clavate, second and third cylindrincal, fourth fusiform ( Fig. 6 ); rostrum arising from a slit-like opening of atrium, not reaching limits of rostral groove, ( Fig. 5 ). Pronotum subrectangular, anterolateral angles not protruding, collar distinct; disc with a narrow median longitudinal carina reaching from anterior to posterior margin, bearing a median sulcus. Meso- and metanota fused at middle but separated laterally; the elevated median ridge is widening posteriorly and extends to metanotum and tergite one, it is delimited laterally by deep depressions along the mesonotum. Metanotum fused to first and second tergites, separated laterally by sutures from connexivum; lateral margins of thorax with sinuate projections at a lower level ( Figs 2, 3 ). Legs long, slender, without spines, trochanters fused with femora ( Fig. 7 ). Abdomen with mediotergites three to six fused into a subquandrangular tergal plate. Seventh tergite strongly elevated posteriorly.

D i s t r i b u t i o n: China.

E t y m o l o g y: The generic name alludes to its crassimarginate thorax.

D i s c u s s i o n: The new genus resembles habitually and is closely related to the Southeast-Asian genus Morphocoris KORMILEV 1980, however it is distinguished by the pronotum of subrectangular shape and anterolateral angles not projecting over the collar, further by the different fusion of pro- meso- and metanotum and tergites one and two ( KORMILEV 1977, HEISS 1982).

Figures

Figs 2-9: Crassocoris hsiaoi sp. nov., (2) habitus lateral view, legs and antennae partly omitted; (3) head, thorax and terga I + II, dorsal view; (4) head, lateral view; (5) head, ventral view; (6) right antenna; (7) thorax, ventral view; (8) apex of right fore tibia with comb and tarsus; (9) terminal segments V–VIII, ventral view. Scale bar for Fig. 2, 7 = 1 mm; for Fig.9 = 0.625 mm; for Fig.3, 4, 5, 6 = 0.5 mm; for Fig.8 = 0.25 mm.