Streptocranus fragilis

Taxonomic history

Streptocranus fragilis Browne, 1949: 901.

Coptoborus fragilis (Browne): Wood and Bright, 1992: 663.

Streptocranus fragilis (Browne): Hulcr et al., 2007: 582.

Diagnosis

1.9−2.15 mm long (mean = 2.03 mm; n = 5); 4.3−4.75 times as long as wide. This species can be distinguished by its small size; elytraelytron:
the two sclerotized forewings of beetles that protect and cover the flight wings
with sides nearly parallel from basebase:
point or edge closest to the body; opposite of apex
to apexapex:
point or edge furthest from the body; opposite of base
; declivitaldeclivital:
pertaining to the elytral declivity
interstriae 1, 3 unarmed; and elytralelytral:
pertaining to the elytra
distaldistal:
situated away from the body
projection short, rounded, weakly carinate.

May be confused with

Streptocranus bicolor, S. mirabilis, and S. petilus

Distribution

Brunei, China (Fujian, Yunnan), East & West Malaysia, Thailand

Host plants

recorded from Eugenia (Myrtaceae), Palaquium (Sapotaceae) (Browne 1961bBrowne 1961b:
Browne FG. 1961b. The biology of Malayan Scolytidae and Platypodidae. Malayan Forest Records 22: 1-255.) and Liquidambar (Altingiaceae) (Smith et al. 2020bSmith et al. 2020b:
Smith SM, Beaver RA, and Cognato AI. 2020b. A monograph of the Xyleborini (Coleoptera, Curculionidae, Scolytinae) of the Indochinese Peninsula (except Malaysia) and China. ZooKeys 983: 1-442. https://doi.org/10.3897/zookeys.983.52630)

DNA data

Sequences available for COI and CAD.

COI: HM064096

CAD: HM064277