Anisandrus xuannu

Taxonomic history

Anisandrus xuannu Smith, Beaver & Cognato 2020 (in 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): 111.

Diagnosis

4.0−4.15 mm long (mean = 4.08 mm; n = 3); 2.0−2.31 times as long as wide. This species can be distinguished by the dense the mesonotal mycangial tuftmycangial tuft:
tuft of setae that denotes the mycangia exterior opening
that extends laterally from the scutellumscutellum:
a shield-like sclerotized plate located at the midpoint of the elytral base 
to striaestria:
punctures in rows, which may or may not be impressed to make grooves
3; posterolateralposterolateral:
relating to end of the side part/portion
margin of declivitydeclivity:
downward slope of either the pronotum or elytra
costate to interstriaeinterstria:
longitudinal spaces along the elytra between the striae, which is not as<br /> impressed and bear smaller punctures.
5; elytralelytral:
pertaining to the elytra
discdisc:
the flat central upper surface of any body part (e.g. pronotum and elytra)
with a deep transverse saddle-like depression, depressed area sulcatesulcate:
deeply furrowed or grooved
; declivitaldeclivital:
pertaining to the elytral declivity
summit with large incurved spinespine:
an elongate projection of the exoskeleton that is longer than its basal width
on interstriaeinterstria:
longitudinal spaces along the elytra between the striae, which is not as<br /> impressed and bear smaller punctures.
2, interstriaeinterstria:
longitudinal spaces along the elytra between the striae, which is not as<br /> impressed and bear smaller punctures.
3 unarmed; declivitydeclivity:
downward slope of either the pronotum or elytra
strongly sulcatesulcate:
deeply furrowed or grooved
to interstriaeinterstria:
longitudinal spaces along the elytra between the striae, which is not as<br /> impressed and bear smaller punctures.
3; declivitaldeclivital:
pertaining to the elytral declivity
strial punctures large, seriateseriate:
arranged or occurring in rows
; interstriaeinterstria:
longitudinal spaces along the elytra between the striae, which is not as<br /> impressed and bear smaller punctures.
minutely biseriately punctatepunctate:
set with fine impressed points, appearing as pin pricks
, setose, setaeseta:
small hair-like or scale-like structure
scale-like, erecterect:
pertaining to setae that have their apices directed away from the body and appear straight
; moderate body size; declivitydeclivity:
downward slope of either the pronotum or elytra
shagreened; discdisc:
the flat central upper surface of any body part (e.g. pronotum and elytra)
rugose; body abundantly covered with long erecterect:
pertaining to setae that have their apices directed away from the body and appear straight
hair-like setaeseta:
small hair-like or scale-like structure
, minutely punctatepunctate:
set with fine impressed points, appearing as pin pricks
; and pronotalpronotal:
pertaining to the pronotum
asperitiesasperity:
small flat denticle-like structures frequently arranged in rows or confined to specific areas
small, coarse, densely spaced.

May be confused with

Anisandrus auratipilus, A. hera, A. klapperichi, A. percristatus, and A. venustus

Distribution

China (Chongqing, Fujian, Sichuan)

Host plants

recorded from Fagaceae (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

specimens not available for sequencing