Pycnarthrum


Type species

Pycnarthurm gracile Eichhoff

Adapted from Wood 1982, p. 455-461


Diagnosis

Among the two genera of the subtribe Ctenophorina in southeastern USA, Pycnarthurm is distinguished from Scolytodes Ferrari by the larger and inferiorly subcontiguous eyes and by the abundant vestiture of scale-like setae.


Description

Species in this genus range from 1.3 to 2.1 mm in length and are approximately 2.2 times as long as wide. Their color rages from yellowish to black. The pronotum is as long as wide and unarmed, with the lateral margins raised in a line. The scutellum is small. The declivity is convex and unarmed. The vestiture consists of abundant, short, and erect scale-like setae. The anterior margin of the compound eye is entire, the long eye is almost subcontiguous below. The scape is longer than the 6-segmented funicle. The oval to ovate club is flat with two clearly visible sutures (straight in P. hispidum) and a third hard to distinguish; the first suture is septate. The procoxae are separated.


Distribution

South Florida, and Mexico to Brazil


World fauna

Number of species: 16, Native species: 1, Introduced species: 0


Hosts

Brosimum, Cedrela, Ficus