Anisandrus niger

Taxonomic history

Xyleborus niger Sampson, 1912: 247.

Anisandrus niger (Sampson): Beaver and Liu, 2018: 538. 

Diagnosis

5.8−5.9 mm long (mean = 5.87 mm; n = 3); 2.0−2.19 times as long as wide. This species can be distinguished by its large size, the mesonotal mycangial tuftmycangial tuft:
tuft of setae that denotes the mycangia exterior opening
the length of the scutellumscutellum:
a shield-like sclerotized plate located at the midpoint of the elytral base 
; elytralelytral:
pertaining to the elytra
discdisc:
the flat central upper surface of any body part (e.g. pronotum and elytra)
convexconvex:
appearing rounded
; declivitaldeclivital:
pertaining to the elytral declivity
interstriae impunctate; elytralelytral:
pertaining to the elytra
surface smooth, shiningshining:
appearing glossy or bright in luster; referring to a surface that is polished and reflects light well
to weakly shagreenedshagreened:
covered with a closely-set roughness, like shark skin
; declivitaldeclivital:
pertaining to the elytral declivity
face flattened when viewed laterally; declivitydeclivity:
downward slope of either the pronotum or elytra
appearing weakly bisculcate; declivitaldeclivital:
pertaining to the elytral declivity
interstriae 2 weakly impressedimpressed:
a depression in a surface
, declivitaldeclivital:
pertaining to the elytral declivity
interstriae 1, 3 tuberculate to apexapex:
point or edge furthest from the body; opposite of base
, interstriaeinterstria:
longitudinal spaces along the elytra between the striae, which is not as<br /> impressed and bear smaller punctures.
2 with a tubercletubercle:
a small knob-like or rounded protuberance of the exoskeleton
at summitsummit:
highest point, used for pronotum and elytra, denotes the peak between pronotal frontal slope and disc, and between elytral disc and declivity
and 3−4 irregularly spaced granulesgranule:
a small rounded protuberance, like grains of sand
along its length; and posterolateralposterolateral:
relating to end of the side part/portion
margin rounded.

May be confused with

Anisandrus apicalis, A. congruens, A. cristatus, A. geminatus, and A. sinivali

Distribution

Bhutan, Laos, Myanmar, Nepal, Vietnam

Host plants

unknown (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: MN619847

CAD: MN620140