Eccoptopterus limbus

Taxonomic history

Eccoptopterus limbus Sampson, 1911: 381.

Synonyms

Xyleborus auratus Eggers, 1923: 193. Wood and Bright 1992: 821.

Xyleborus squamulosus Eggers, 1923: 193. Eggers, 1927a: 407.

Xyleborus squamulosus duplicatus Eggers, 1923: 193. Browne, 1955: 351; Wood, 1989: 172.

Diagnosis

3.5−4.2 mm long (mean = 3.73 mm; n = 5); 2.1−2.3 times as long as wide. This species can be distinguished by the presence of more than three spinesspine:
an elongate projection of the exoskeleton that is longer than its basal width
on each elytralelytral:
pertaining to the elytra
margin. Declivitaldeclivital:
pertaining to the elytral declivity
armature consists of two large spinesspine:
an elongate projection of the exoskeleton that is longer than its basal width
closest to suture on declivitaldeclivital:
pertaining to the elytral declivity
summit and many smaller, uniform-sized denticlesdenticle:
a small tooth, the sides of which are equal and the tip is above the middle of the base
on declivitaldeclivital:
pertaining to the elytral declivity
margin.

May be confused with

Eccoptopterus spinosus

Distribution

China (Yunnan), Indonesia (Java, Sumatra, Sunda Is.), East & West Malaysia, New Guinea, Thailand

Host plants

polyphagous (Browne 1961bBrowne 1961b:
Browne FG. 1961b. The biology of Malayan Scolytidae and Platypodidae. Malayan Forest Records 22: 1-255.)

Remarks

Elytral elytral:
pertaining to the elytra
vestiture of this species is quite variable. In Asian specimens the declivitydeclivity:
downward slope of either the pronotum or elytra
is covered with dense flattened scalesscale:
a flattened seta
, while specimens from Papua New Guinea are covered by long setaeseta:
small hair-like or scale-like structure
. The shape, density, and color of the scalesscale:
a flattened seta
are quite variable (Hulcr and Cognato, 2013).

DNA data

Sequences available for COI and CAD.

COI: HM064081

CAD: HM064261