Xerosaprinus (Xerosaprinus) diptychus (Marseul)

Aballay, Fernando H., Arriagada, Gerardo, Flores, Gustavo E. & Nestor D. Centeno,, 2013, An illustrated key to and diagnoses of the species of Histeridae (Coleoptera) associated with decaying carcasses in Argentina, ZooKeys 261, pp. 61-84 : 67

Xerosaprinus (Xerosaprinus) diptychus (Marseul) Figures 1012

Diagnosis.

Smallto medium size (length: 1.8-2.9 mm, width: 1.7-2.4 mm). Body oval, black to dark brown, shiny. Pronotum with coarse and dense punctation on anterior, lateral and basal areas, disc small, with finer and sparse punctation. Pronotal hypomeron setose in dorsal view. Elytron with coarse and very dense punctation seemingly rugose on distal half and on proximal half in intervals 1-3, with a smooth, shining area between the fourth dorsal stria, the sutural stria and the rounded arch; elytral dorsal striae 1-4 complete on anterior half, sometimes the first and third vestigial, fourth and sutural striae connected by a rounded arch. Pygidium without grooves. Protibiae with teeth moderately expanded and 7-8 denticles (Fig. 12).

Distribution.

Mexico ( Mazur 2011) and Argentina ( Aballay et al. 2008, 2012).