Ips

Type species

Tomicus typographus Linnaeus

Adapted from Wood 1982, p. 667-705

Diagnosis

Species within the genus Ips are distinguished from Orthotomicus Ferrari and Pseudips Cognato by the flat clubclub:
the apical segment of the insect antennae that is enlarged or thickened such that it is anatomically differentiated from the preceding segments
with bisinuatebisinuate:
displaying two sinuations
sutures (except from Orthotomicus latidens and spinifer).

Description

Species in this genus range from 2.1 to 6.9 mm in length and are approximately 2.4 to 2.8 times as long as wide. Their color ranges from yellowish brown to almost black. The pronotumpronotum:
the upper or dorsal surface of the first thoracic segment
is as long as wide and asperateasperate:
of a surface or texture which is rough
anteriorly. The scutellumscutellum:
a shield-like bony plate or scale, as on the thorax of some insects
is large and flushed with the elytraelytra:
the two external and hardened or sclerotized forewings of adult Coleoptera, often appearing leather-like in texture
. The declivitydeclivity:
the apical portion of the beetle elytra that slopes downward
is concave, with the lateral margins bearing spines, the third always being the largest and often capitatecapitate:
an elongate structure with a terminal knob-like or head-like enlargement
. The vestiturevestiture:
a surface covering of scales or setae on the body, wing, or other appendage
consists of long and erect hair-like setaehair-like setae:
setae that are thin and similar to a hair
. The anterior margin of the compound eye is emarginated. The scapescape:
the first and basal segment of the insect's antennae
is longer than the 5-segmented funiclefunicle:
the antennal segments located between the scape and the club in some Coleoptera
. The clubclub:
the apical segment of the insect antennae that is enlarged or thickened such that it is anatomically differentiated from the preceding segments
is oval to near circular, strongly flattened, with two bisinuatebisinuate:
displaying two sinuations
sutures on the anterior face. The procoxaeprocoxae:
extra segment occasionally preceding coxa (hip joint) of the first or anterior pair of legs of arthropods
are contiguouscontiguous:
sharing an edge or boundary; touching
.

Distribution

North America to Nicaragua, Europe and Asia to North Africa, India, and Australia

World fauna

Number of species: 38, Native species: 21, Introduced species: 0

Hosts

Picea, Pinus