Scraptiinae, Gistel, 1848

Johnston, M. Andrew, Naczi, Robert F. C. & Gimmel, Matthew L., 2024, Review of North American Scraptiidae (Coleoptera: Tenebrionoidea), with a Catalog of World Genera, The Coleopterists Bulletin 78 (2), pp. 171-200 : 173

Subfamily Scraptiinae

Adults of Scraptiinae are distinguished from those of Anaspidinae by having the protrochantins exposed, the pronotum and elytra without transverse strigae, the head without a distinct transverse carina separating the occiput from the posterior face of the head capsule, the pronotum with a posterior pair of pits or depressions, and being generally more prognathous, soft-bodied, and conspicuously setose ( Crowson 1955; Lawrence and Ślipiński 2010; Pollock 2002). Male genitalia of North American Scraptiinae show typical tenebrionoid aedeagal morphology with the tegmen being comprised of an elongate basal piece articulated with partially to fully fused parameres (apicale or apical piece of authors) ( Fig. 1G ). Larval Scraptiinae are easily distinguished from Anaspidinae by lacking stemmata, possessing a distinct frontoclypeal suture, having a well developed mandibular mola without a brush of stout spines at the base, lacking a distinct lobe or uncus on the maxillary mala, and by lacking urogomphi but possessing a unique large, oblong, dehiscent process attached to the ninth abdominal tergite ( Crowson 1955; Lawrence and Ślipiński 2010; Švácha 1995; Young 1991). Larvae of Allopodini remain uncharacterized.

Figures

Fig. 1. Allopodini, all scale bars = 1 mm. A) Allopoda lutea, dorsal habitus, B) A. dentipes, dorsal habitus, C) A. lutea, front leg, showing tibial spine (arrow) and lobed fourth tarsomere, D) A. lutea hind tarsus, showing lack of lobes on any tarsomeres, E) Pectotoma hoppingi, dorsal habitus, male, F) P. hoppingi, female, G) A. lutea, male genitalia, H) P. hoppingi, head in lateral view. bp = basal piece of tegmen; fp = fused parameres of tegmen; p = penis.