Xylosandrus eupatorii

Taxonomic history

Xyleborus eupatorii Eggers, 1940: 140.

Xylosandrus eupatorii (Eggers): Schedl, 1964c: 213.

Diagnosis

2.0−2.3 mm long (mean = 2.12 mm; n = 5); 2.22−2.3 times as long as wide. This species can be distinguished by its moderate size; elytralelytral:
'pertaining to the elytra
discdisc:
the flat central upper surface of any body part (e.g. pronotum and elytra)
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; declivitaldeclivital:
pertaining to the elytral declivity
interstriae uniseriate granulategranulate:
'pertaining to a coarse, grainy surface texture'
, 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, pronotumpronotum:
'the dorsal surface of the thorax
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
.

This species is nearly identical to X. germanus and is most readily distinguished by the pronotumpronotum:
'the dorsal surface of the thorax
that is as long as wide and pronotumpronotum:
'the dorsal surface of the thorax
basebase:
point or edge closest to the body; opposite of apex
with sparser more disperse setaeseta:
small hair-like or scale-like structure
.

May be confused with

Anisandrus dispar, A. maiche, A. paragogus, Xylosandrus dentipennis, X. germanus, and X. metagermanus

Distribution

China (Hainan, Hong Kong, Yunnan), Indonesia (Java), Laos, Thailand, Vietnam

Host plants

recorded only from Eupatorium (Asteraceae) (Eggers 1940Eggers 1940:
Eggers H. 1940. Neue indomalayische Borkenkauml;fer (Ipidae) III Nachtrag (Forstsetzung). Tijdschrift voor Entomologie 83: 132-154.)

DNA data

Sequences available for COI and CAD.

COI: MN620081; MN620082; MN620083; MN620084; MN620085; OP617759

CAD: MN620341; MN620342; OP607188