Xylosandrus adherescens

Taxonomic history

Xylosandrus adherescens Schedl, 1971b: 375.

Diagnosis

2.0 mm long (n = 3); 2.0 times as long as wide. This species can be distinguished by its small size; elytralelytral:
'pertaining to the elytra
discdisc:
the flat central upper surface of any body part (e.g. pronotum and elytra)
flat, gradually curving toward declivitydeclivity:
downward slope of either the pronotum or elytra
, appearing rounded; posterolateralposterolateral:
'relating to end of the side part/portion
margins of elytraelytron:
' the two sclerotized forewings of beetles that protect and cover the flight wings
carinate to interstriaeinterstria:
'longitudinal spaces along the elytra between the striae, which is not as<br /> impressed and bear smaller punctures.
7; declivitaldeclivital:
pertaining to the elytral declivity
face with six punctatepunctate:
'set with fine impressed points, appearing as pin pricks
striae, striaestria:
punctures in rows, which may or may not be impressed to make grooves
setose, setaeseta:
small hair-like or scale-like structure
semi-recumbentsemi-recumbent:
pertaining to setae that are in between'erect and recumbent, usually at a 45 degree angle
and equal to the width of an interstriainterstria:
'longitudinal spaces along the elytra between the striae, which is not as<br /> impressed and bear smaller punctures.
; interstriaeinterstria:
'longitudinal spaces along the elytra between the striae, which is not as<br /> impressed and bear smaller punctures.
denticulate-granulate, uniseriate with 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
longer than the width of two interstriae; pronotumpronotum:
'the dorsal surface of the thorax
as long as wide, from dorsaldorsal:
'of or relating to the upper surface; opposite of ventral
view rounded (type 1) and laterallateral:
'pertaining to the side
view basic (type 0), summitsummit:
highest point, used for pronotum and elytra, denotes the peak between pronotal frontal slope and disc, and between elytral disc and declivity
at midpoint, basalbase:
point or edge closest to the body; opposite of apex
half smooth, shiningshining:
appearing glossy or bright in luster; referring to a surface that is polished and reflects light well
, sparsely minutely punctatepunctate:
'set with fine impressed points, appearing as pin pricks
; and sparse mycangial tuftmycangial tuft:
'tuft of setae that denotes the mycangia exterior opening
on the pronotalpronotal:
'pertaining to the pronotum
basebase:
point or edge closest to the body; opposite of apex
.

May be confused with

Xylosandrus compactus, X. derupteterminatus, X. mesuae, and X. morigerus

Distribution

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)

Remarks

The gallery of this species is a flat cave and excavatedexcavated:
'with a depression that is not in a segment of a circle
against the grain of the wood (AIC, pers. obs.).

DNA data

Sequences available for COI and CAD.

COI: MN620056

CAD: MN620324