Streptocranus

Taxonomy

Streptocranus Schedl, 1939b: 52.

Diagnosis

The most slender and extremely elongated species (1.90−4.90 mm long; 3.85−4.75 times as long as wide) occurring in Southeast Asia. Streptocranus can be distinguished by its unique subquadratesubquadrate:
almost quadrate, with oblique corners
and laterally constricted pronotumpronotum:
the dorsal surface of the thorax
; flat and long pronotalpronotal:
pertaining to the pronotum
discdisc:
the flat central upper surface of any body part (e.g. pronotum and elytra)
; elytral apexapex:
point or edge furthest from the body; opposite of base
divaricate and ornamented with a pair of distaldistal:
situated away from the body
projections; protibia slender, sickle-shaped; mycangial tufts absent; scutellumscutellum:
a shield-like sclerotized plate located at the midpoint of the elytral base 
flat, flush with elytra; and procoxae contiguous.

May be confused with

Debus

Distribution

only occurring in the Paleotropics and Oceania

Gallery system

The gallery systems of Streptocranus seem to be rather variable, with a few branches that may run horizontally or longitudinally, and may be irregularly widened, but without distinct brood chambers (Browne 1961bBrowne 1961b:
Browne FG. 1961b. The biology of Malayan Scolytidae and Platypodidae. Malayan Forest Records 22: 1-255.).