Polygraphini Chapuis, 1869

Buhroo, Abdul Ahad, 2024, A taxonomic monograph of subfamily Scolytinae (Coleoptera: Curculionidae) in the Western Himalaya, Zootaxa 5533 (1), pp. 1-82 : 43

Tribe Polygraphini Chapuis, 1869

Genus Carphoborus Eichhoff, 1864

Carphoborus species are diagnosed by the following morphological characters: body length: 1.2–2.1 mm; eyes laterally emarginate; funicle five-segmented, club four-sutured and spatulate (rhomboid); pronotum wider than long; anterior elytral margin granulate; vestiture of short and thick scale-like setae; sexually dimorphic frons: ♀ frons punctured, with corona of short filamentous setae, ♂ frons with two small medial tubercles, and dense short filamentous setae; host: conifers.

This genus can be distinguished from similar Polygraphus by the presence of laterally emarginate compound eyes, and raised alternate declivital interstriae at the basal margin.

Key to the Himalayan species of Carphoborus Eichhoff, 1864

1 Female frons with a corona of moderately long pale hairs around the margin; elytral striae marked with large, shallow, close, punctures each with a setose granule; interstriae nearly 1.5× as wide as striae, with much smaller punctures................................................................................................. C. costatus Wichmann

- Female frons with a single large puncture visible at the middle and a corona of moderately short hairs around the margin; elytral striae deep with small, confused punctures each with a microhair; interstriae more than twice as wide as striae, with large punctures............................................................................. C. zhobi (Stebbing)