Labrosyne

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Description de Maa (1963) :
Body of medium size, robust, weakly humpbacked, about 4/5 as deep in profile as broad, Head hardly narrower than pronotum, exceptionally short, anteriorly broadly rounded. Anteclypeus weakly keeled, 1/2 longer than broad; postclypeus evenly, very weakly convex. Rostral apex nearly reaching posterior margin of hind coxa, Pleurostome ½ broader than lorum, separated from the latter by a deep long suture; upper end of 10rum tuberculate, narrowly rounded; maximum length of gena proper 2/3 of minimum breadth of pleurostome.; maxillary plate well exposed, Bye much broader than long, its inner margin nearly straight for its full length, acutely angulate at low end; outer margin touching posterior margin of head, Crown unusually short, with median and side lengths subequal, strongly transversely depressed and separated from face by an arcuate carina; tylus about 1/6 as long as broad, much narrower than eye, broader than side piece of vertex; supra-antennal area clearly defined, tetragonal, as long as broad, with outer margin hardly shorter than inner margin ; upper portion of this tetragonal area and of postclypeus well visible in vertical view of crown. Ocellus touching transverse frontal suture ; interocellar distance less than 1/2 of interocular distance, Pronotum sparsely punctate ; anterior margin gently arcuate; anterolateral margin 1/2 as long as ocello-ocular distance, round-off ; posterolateral and posterior margins distinctly sinuate. Scutellum discally weakly concave, basilaterally hardly elevated. Tegmen 2.5 X as long as wide, semitransparent, gently convex, coarsely, sparsely punctate all-over; veins indistinct, R very close and gently, evenly convergent basad to costal margin and branched beyond middle of tegmen, M and Cu close and subparallel to Rs and claval furrow respectively; apical cell 1 basically quite narrow, apically open; 2 large, longer than broad; 3 broadly subtriangular; preapical cell 1 elongate, 2 basally open; corial appendix large, almost reaching tegminal apex; clavus apically acute, with 2 complete longitudinal veins, but no crossveins, Legs exceptionally long and slender; hind leg as long as tegmen; hind tibia longer than head and pronotum together, with 2 lateral spines, that near middle is about 1/2 as long as breadth of tibial apex; segment 1 of hind tarsus subequal in length to 2+3, dorsomedian length of segment 2 much greater than length of its apical lobe. Female anal segment partly concealed; ovipositor- sheath vertical. Male unknown.


Tête

Pronotum

Scutellum

Pattes

Ailes