Trigonurella

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Description de Maa (1963) :
Body shining. Crown short. Postclypeus strongly convex, protruding forward, broadly longitudinally depressed near center. Pleurostome about 2X as broad as lorum; gena proper long. Eye large, broader than tylus, distinctly transverse in vertical view of crown. Tylus as broad as its distance to eye, Interocellar distance 2/5 of ocello-ocular distance. Pronotum hardly broader than head; median carina wanting; anterolateral margin carinated, only about as long as interocellar distance; posterolateral margin nearly straight; posterior margin deeply sinuate. Scutellum narrower than interocular distance, evenly, weakly convex. Tegmen not transparent; veins indistinct, R branched at apical 1/3, with a long crossvein in between; Cu rather apart from claval furrow; rm and mcu both present; preapical cell 1 and all apical cells convex and reticulate; clavus apically broadly truncate ; 1A simple, weakly developed at base, joining 2A at middle by a crossvein; corial appendix subtriangular, 1/2 as long as broad, strongly wrinkled throughout, anteriorly acute, far from reaching tegminal apex; claval appendix very short, triangular. Apical 1/2 of tegmina evenly convex; when closed, only corial appendices overlapping each other and forming an oblique obtriangular areole about 30° to horizontal plane. Wing venation normal. Segment 1 of hind tarsus subequal in length to 2+3.


Tête

Pronotum

Scutellum

Pattes

Ailes