Taxonomic history

Xyleborus tenuigraphus Schedl, 1953c: 29

Cyclorhipidion tenuigraphus (Schedl): Beaver and Liu 2010: 24 (as a synonym of C. fukiense).

Diagnosis

2.7−3.0 mm long (mean = 2.84 mm; n = 4); 2.5−3.0 times as long as wide. This species is distinguished by the short, steep declivity that is approximately 25% of total elytral length, armed with large tubercles on interstriae 1 and 3, interstriae 2 granulate on apical 1/3; posterolateral margins rounded; and declivital interstriae 1 and 2 setae in 2 confused rows.

May be confused with

This species is a part of a challenging species group consisting of Cyclorhipidion bodoanum, C. distinguendum, C. inarmatum, C. pelliculosum, and C. xeniolum. They can be most readily separated using Smith et al. (2020b) table 1:

species

declivital interstriae 1 setae

declivital interstriae 2 setae

lateral profile of declivity

declivital interstriae 2 granulate

 total length (mm)

xeniolum

uniseriate

uniseriate

obliquely truncate

unarmed

1.65−1.8

bodoanum

uniseriate

uniseriate

steeply rounded

unarmed

1.7−2.2

inarmatum

2 rows, confused

uniseriate

steeply rounded

unarmed

2.8−3.0

tenuigraphum

2 rows, confused

2 rows, confused

steeply rounded

often on apical third

2.7−3.0

pelliculosum

3 rows, confused

uniseriate

steeply rounded

unarmed

3.2−3.5

distinguendum

3 rows, confused

2 rows, confused

steeply rounded

unarmed

2.5−3.1

Distribution

China (Fujian, Yunnan), India (Assam), Vietnam

Host plants

only recorded from Pistacia (Anacardiaceae) (Smith et al. 2020b)