Cnemonyx


Type species

Cnemonyx galeritus Eichhoff

Adapted from Wood 1982, p. 393-411


Diagnosis

Cnemonyx is distinguished from Scolytus Geoffroy by its club which usually has up to three visible sutures, by having long setae on the scape, and the presence of a convex declivity.


Description

Species in this genus range from 1.0 to 3.9 mm in length and are approximately 2.0 to 2.7 times as long as wide. Their color ranges from dark brown to black. The pronotum is similar to that of Scolytus Geoffroy which is large and broad proportionally to the rest of the body. The pronotum appears to be as long as wide but is usually slightly wider than long, with a few species having it longer than wide; it is unarmed and with a crenulated marginal line around it. The scutellum is small and flushed with the elytra. The elytral anterior margin has a line, like in the pronotum. The declivity is convex but the slope is reduced. The abdomen ascends to meet the elytral apex. The frons is sexually dimorphic with a vestiture that varies from none to an elaborate brush of long hair-like setae, usually longer in males. The anterior margin of the compound eye is entire. The scape is usually as long as the 7-segmented funicle, which has characteristic long hair-like setae, which is more prominent on males. The club is oval-shaped and has two to three procurved sutures, the first sometimes partially septate. The procoxae are subcontiguous. The protibia has a single apical spine.


Distribution

Florida, Baja California to Argentina


World fauna

Number of species: 49, Native species: 2, Introduced species: 0


Hosts

Hippomane, Ficus, Prunus, Pyrus, Rhus