Pityokteines


Type species

Ips curvidens Germar

Adapted from Wood 1982, p. 656-662


Diagnosis

Pityokteines is distinguished from the similar Orthotomicus Ferrari by the rounded lateral margins of the declivity, the apical margin which is not clearly raised, and the abundant vestiture on the head and anterior parts of the pronotum in females. Males usually have a pair of smaller spines pointing forward in the top margin of the declivity between the first and largest pair of marginal spines.


Description

Species in this genus range from 1.6 to 2.9 mm in length and are approximately 2.5 to 2.8 times as long as wide. Their color ranges from brown to very dark brown. The pronotum is longer than wide with the anterior half asperate. The scutellum is large and flushed with the elytra. The declivity is sulcate (concave), with the lateral margins armed by three pairs of spines, the second pair the largest, the first the smallest and displaced towards the suture; from one to two tubercles can be present between the second and third spines. The declivital apical margin ridge is greatly reduced in this genus, compared to Orthotomicus. The vestiture is of abundant and long hair-like setae. The anterior margin of the compound eye is emarginate. The scape is usually longer than its 5-segmented funicle. The club is obliquely truncate and has two straight sutures on the anterior face. The procoxae area contiguous.


Distribution

North America and northern Eurasia


World fauna

Number of species: 9, Native species: 6, Introduced species: 0


Hosts

Abies, Pinus, Picea, Pseudotsuga