Crypturgus subcribrosus Eggers 1933

Jordal, Bjarte H. & Ek, Miloš Kní Ž, 2007, Resurrection of Crypturgus subcribrosus Eggers 1933 stat. n., and its close phylogenetic relationship to Nearctic Crypturgus (Coleoptera, Scolytinae), Zootaxa 1606, pp. 41-50 : 48

Crypturgus subcribrosus Eggers 1933

( Fig. 1 b, 3a–b).

Crypturgus subcribrosus Eggers 1933 : Entomologische Blätter für Biologie und Systematik der Käfer 29, p.5. Holotype in NHMW, examined. New status.

Diagnosis. Length 1.0– 1.3 mm, mature colour bronze yellow or brown, rarely dark brown. Surface of the pronotum reticulate, dull, with sparse and shallow, obscure punctures. Striae of elytra weakly impressed, interstriae gently rounded, micro-shagrinate, dull. Female declivity usually with a long tuft of yellow hair-like setae (sometimes abraded in older specimens), never with two patches of micro-sensillae within the tuft. COI barcodes deposited in GenBank under accessions EU 011808 - EU 011811 .

Remarks. This species is very similar to C. cinereus but can usually be distinguished by the less elevated interstriae of the elytra which has a micro-shagrinate texture, by the strongly reticulated pronotum that appears more finely shagrinated with fewer and obscure punctures, and that the female elytral declivity lack patches with micro-sensillae. In his original description of C. subcribrosus, Eggers (1933) also noted the gently rounded interstriae and 'skin-like' appearance of the cuticle: "Zwischenräume auch ganz flach, fein hautartig gerunzelt". Exceptional specimens do overlap in this character, however, and longer series from each locality is sometimes needed to obtain correct identification based on morphology only. These problems are well illustrated by the fact that Eggers also mixed the two species in his own collection in NHMW (Knizek, pers. obs).

Figures

FIGURE 1. Dorsal view Crypturgus cinereus (A) and C. subcribrosus (B).