Strophosoma (Strophosoma) capitatum

Gosik, Rafal, Sprick, Peter & Czerewko, Katarzyna, 2017, Morphology of the larvae of three Central European Strophosoma Billberg, 1820 (Coleoptera, Curculionidae, Entiminae) species, Deutsche Entomologische Zeitschrift 64 (1), pp. 27-42 : 31

Strophosoma (Strophosoma) capitatum Figs 1, 2, 7-11, 12, 13-17

Body.

Rather elongate, white to yellowish, abdominal segment VIII dark yellow. Setae long to very short. Each side of prothorax (Fig. 7) with 8 prns, two setae placed close to spiracle. Meso- and metathorax (Fig. 7) each with 1 medium long prs and 4 pds: first and second short, third very long; fourth medium. Each pedal area with 7 pda, variable in length. Eps1 on abdominal segments I-VII almost twice as long as eps2 (Fig. 8), on next segments almost equal in length (Fig. 9). Abd. segments I-VII each with 5 pds: first, second and fourth very short, third and fifth very long. Abd. VIII with 3 pds and 1 very short ss (Figs 9-11).

Head.

Yellow, oval (Fig. 12). Antennal basal membranous article with 3 basiconic sensillae and a pore (Fig. 13). Labrum (Fig. 14) approximately 1.8 times as wide as long; anterior margin slightly sinuate, serrate due to some thorn-like cuticular processes located between ams; als capilliform. Surface of epipharynx between labral rods covered by very fine asperities. Labral rods of medium length. Clypeus (Fig. 14) 2.2 times as wide as long; anterior margin slightly convex. Mandible (Fig. 15) with a protruding cutting edge placed close to apex; mbs very long. Both maxillary palpomeres equal in length, but basal one wider than distal; maxilla with 8 dms and 4 vms, all capilliform (Figs 14, 16). Praelabium rounded, with a single pair of ligs; basal palpomere slightly longer and wider than distal; pslb2 6 times longer than remaining pslb.