Eros humeralis (Fabricius, 1801)

BOCAK, L. & MATSUDA, K., 2003, Review of the immature stages of the family Lycidae (Insecta: Coleoptera), Journal of Natural History 37 (12), pp. 1463-1507 : 1490

Eros humeralis (Fabricius, 1801)

Diagnosis. The larva of Eros humeralis is similar to those of Lopheros lineatus and Platycis sculptilis in sharing following characters: terga undivided, tergum A9 simply rounded, urogomphi absent. Eros humeralis has shorter, more robust mandibles than L. lineatus and P. sculptilis .

Description of mature larva. Body sub-parallel, sclerites lightly pigmented, membranes light brown. Lateral part of epicranium well sclerotized and pigmented, less sclerotized in frontal part. Eyeless. Mandibles relatively short, robust. Palpifer strongly transverse, much shorter than combined length of 3-segmented maxillary palpi. Basal maxillary palpomeres robust, slightly transverse, apical palpomere slen- der. Mala slender, slightly longer than palpifer. Prementum divided by median suture in two parts. Basal labial palpomere as long as wide, apical slender. Ventral plate transverse, rounded laterally. Terga T1–T3 and A1–A8 small, transverse, undivided. Prosternum small, narrow, triangular, precoxale T1 extensive. Sterna T2–T3 very small, weakly sclerotized and pigmented. Pleurites indistinct, spiracular sclerite T2 convex, with spiracle in middle of sclerite. Legs short, robust. Upper pleurites A1–A8 large, with flat tubercle in posterior third, spiracle anteriorly posterior third, each tubercle with one long seta. Tergum A9 simply rounded, without urogomphi.

Measurements. BL 11.5 mm, PL 0.44 mm, PW 0.22 mm.

Pupa. Exarate, only one slender tubercle at posterolateral angle of pronotum, apex of tubercle densely pubescent.

Material examined. One mature larva, one pupa. USA, WI: Dane Co., Festge Co. Park, T8 N/ R7 E/Sec. 33, larvae 27.iii.1998, pupae 10–16.iv.1998, adults 20–26.iv.1998, Michele Price ( LMBC)