Terminalinus

Taxonomy

Terminalinus Hopkins, 1915a: 57.

Synonyms

Fortiborus Hulcr and Cognato, 2010a: 17. Smith et al. 2022b: 166.

Diagnosis

Terminalinus are among the largest xyleborines in Southeast Asia (4.8−6.6 mm long and 2.52−3.06 times as long as wide). Terminalinus is distinguished by the pronotumpronotum:
the dorsal surface of the thorax
robust; elytralelytral:
pertaining to the elytra
declivitydeclivity:
downward slope of either the pronotum or elytra
flattened and broadened laterally, apexapex:
point or edge furthest from the body; opposite of base
angulate; anterioranterior:
the front or forward; opposite of posterior
edge of pronotumpronotum:
the dorsal surface of the thorax
extended anteriad, bearing a distinct row of serrations; antennalantennal:
pertaining to the antennae
club distinctly pubescent, type 4; eyes very large, deeply emarginateemarginate:
notched at the margin
; scutellumscutellum:
a shield-like sclerotized plate located at the midpoint of the elytral base 
flat, flush with elytra; procoxae contiguous; and mycangial tufts absent.

Similar to some large Euwallacea species, except margin of segment 1 of antennalantennal:
pertaining to the antennae
club concaveconcave:
appearing hollowed out
and recurved; anterioranterior:
the front or forward; opposite of posterior
edge of pronotumpronotum:
the dorsal surface of the thorax
producedproduced:
referring to a part of the exoskeleton that is extended, lengthened or elevated
anteriad, bearing row of serrations; protibiaeprotibia:
tibia of the first pair of legs
rounded, with seven or more denticlesdenticle:
a small tooth, the sides of which are equal and the tip is above the middle of the base
. 

May be confused with

Euwallacea and Xyleborus

Distribution

throughout Southeast Asia and Oceania

Gallery system

The galleries are regularly branched in one transverse plane and are without brood chambers (Browne 1961bBrowne 1961b:
Browne FG. 1961b. The biology of Malayan Scolytidae and Platypodidae. Malayan Forest Records 22: 1-255.).

Remarks

The species of this genus are all closely associated with Dipterocarpaceae and are not definitely known to breed in other families of trees.