Debus shoreae

Taxonomic history

Tomicus shoreae Stebbing, 1907: 39.

Xyleborus shoreae (Stebbing): Hulcr, 2010: 109 (as synonym of D. fallax (Eichhoff)).

Debus shoreae (Stebbing): Beaver et al., 2014: 44.

Synonyms

Tomicus assamensis Stebbing, 1909: 17. Beeson, 1930: 259.

Diagnosis

3.0−3.8 mm long (mean = 3.34 mm; n = 5); 2.92− 3.17 times as long as wide. This species is distinguished by the posterolateralposterolateral:
relating to end of the side part/portion
extensions of elytraelytron:
the two sclerotized forewings of beetles that protect and cover the flight wings
short, less than the width of apicalapex:
point or edge furthest from the body; opposite of base
emargination and declivitydeclivity:
downward slope of either the pronotum or elytra
shallowly excavatedexcavated:
with a depression that is not in a segment of a circle
; and elytralelytral:
pertaining to the elytra
declivitydeclivity:
downward slope of either the pronotum or elytra
impunctate except for a single row of punctures running from the upper margin to the inner margin of the second declivitaldeclivital:
pertaining to the elytral declivity
spine and thence to the apicalapex:
point or edge furthest from the body; opposite of base
emargination.

This species is very similar to D. emarginatus and can be distinguished by the puncturation of the elytralelytral:
pertaining to the elytra
declivitydeclivity:
downward slope of either the pronotum or elytra
. This species also shares a single row of declivitaldeclivital:
pertaining to the elytral declivity
punctures with D. defensus but can be distinguihsed by the larger size, and short but prominent posterolateralposterolateral:
relating to end of the side part/portion
extensions of the elytraelytron:
the two sclerotized forewings of beetles that protect and cover the flight wings
.

May be confused with

Debus defensus, D. emarginatus and D. quadrispinus

Distribution

Bhutan, China (Guangxi, Sichuan), India (Arunachal Pradesh, Assam, Uttarakhand, Uttar Pradesh, West Bengal), Indonesia (Java, Sumatra), Laos, East Malaysia, Myanmar, Nepal, New Guinea, Thailand, Vietnam

Host plants

polyphagous, possibly with a preference for Dipterocarpaceae (Beaver et al. 2014Beaver et al. 2014:
Beaver RA, Sittichaya W, Liu L-Y. 2014. A synopsis of the scolytine ambrosia beetles of Thailand (Coleoptera: Curculionidae: Scolytinae). Zootaxa 3875: 1-82. http://dx.doi.org/10.11646/zootaxa.3875.1.1)

DNA data

Sequences available for COI and CAD.

COI: MN619904

CAD: MN620186