Xenapates braunsi (Konow, 1896)

Liston, Andrew D., Goergen, Georg & Koch, Frank, 2015, The immature stages and biology of two Xenapates species in West Africa (Hymenoptera, Tenthredinidae), Deutsche Entomologische Zeitschrift 62 (1), pp. 9-17 : 10

Xenapates braunsi (Konow, 1896) Figs 3-5, 8-9, 11

Description.

Colour (Fig. 9). Head including posterior vertex yellow, changing to white on genae. A black patch, not more than 4 × as long as ocularium, surrounds stemmatum and does not reach an imagined horizontal line extended from dorsal apex of frons. Thoracic legs pale brown, except for black coxal suture. Trunk pale green, appearing dorsally darker because contents of gut show through; subspiracular lobes and anal area including anal prolegs pale orange.

Head (Fig. 11). With a pair of large, pale depressions, one each side of coronal suture dorsal of junction with frontal suture. Setae on vertex and parietals very short (less than third diameter of antennomere 1) and pale. Some setae on genae and mouthparts as long as antenna. Right lobe of labrum about twice as long as visible part of left lobe.

Trunk. Prothorax dorsal annulets 1 and 2 laterally fused. Annulet 2 medially divided; lateral lobes very much higher than lateral parts of 1 or 3. Dorsal surface of lobes on annulet 2 with partly pigmented spicules that are more strongly developed than on other parts of thoracic dorsum. Surface of integument of abdomen above spiracles almost smooth, with very minute, unpigmented spicules. Some partly dark spicules on hypopleurite, surpedal and substigmal lobes (Fig. 8).

Length of fully grown larvae: 19-20 mm (n = 16).