Cyclorhipidion tenuigraphum
|
Cyclorhipidion tenuigraphum lectotype lateral; S.M. Smith |
|
Cyclorhipidion tenuigraphum lectotype dorsal; S.M. Smith |
|
Cyclorhipidion tenuigraphum lectotype declivity; S.M. Smith |
|
Cyclorhipidion tenuigraphum lectotype frontal; S.M. Smith |
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 declivitydeclivity:
downward slope of either the pronotum or elytra
that is approximately 25% of total elytralelytral:
pertaining to the elytra
length, armed with large tuberclestubercle:
a small knob-like or rounded protuberance of the exoskeleton
on interstriaeinterstria:
longitudinal spaces along the elytra between the striae, which is not as<br />
impressed and bear smaller punctures.
1 and 3, interstriaeinterstria:
longitudinal spaces along the elytra between the striae, which is not as<br />
impressed and bear smaller punctures.
2 granulategranulate:
pertaining to a coarse, grainy surface texture
on apicalapex:
point or edge furthest from the body; opposite of base
1/3; posterolateralposterolateral:
relating to end of the side part/portion
margins rounded; and declivitaldeclivital:
pertaining to the elytral declivity
interstriae 1 and 2 setaeseta:
small hair-like or scale-like structure
in 2 confusedconfused:
of markings, having indefinite outlines or running together as lines or spots without definite pattern; usually referring to punctures
rows.
May be confused with
This species most closely resembles C. californicum and C. inarmatum.
This species is a part of the challenging C. pelliculosum species group. Species in the group are most easily distinguished by the rows of setaeseta:
small hair-like or scale-like structure
along declivitaldeclivital:
pertaining to the elytral declivity
interstriae 1and 2. See table below:
|
species |
declivital declivital: |
declivital declivital: |
total body length (mm) |
total body length/width ratio |
lateral lateral: |
interstriae 2 granules |
interstriae 1 & 3 granules |
|
C. achlys Smith, Beaver, and Cognato, 2022 |
3 |
1 |
3.4 |
3.09 |
steeply rounded |
absent |
present |
|
C. beaveri Lin and Smith, 2022 |
1 |
1 |
1.68−1.85 |
2.91−3.05 |
steeply rounded |
present |
present |
|
2 |
1 |
1.6−2.4 |
2.5−3.29 |
steeply rounded |
absent |
present |
|
|
2 |
2 |
2.2 |
3.14 |
steeply rounded |
absent |
present |
|
|
C. cognatoi Lin and Smith, 2022 |
2 |
1 |
2.95−3.28 |
2.82−2.93 |
steeply rounded |
absent |
present |
|
3 |
2 |
2.5−3.11 |
2.6−3.0 |
steeply rounded |
absent |
present |
|
|
2 |
1 |
2.75−3.0 |
2.75−3.0 |
steeply rounded |
absent |
present |
|
|
1 |
1 |
2−2.2 |
2.75−3.07 |
steeply rounded |
absent |
present |
|
|
3 |
1 |
3.2−3.5 |
2.67−3.0 |
steeply rounded |
rare, on basalbase: |
present |
|
|
C. taedulum Smith, Beaver, and Cognato, 2022 |
2 |
1 |
2.7 |
3 |
steeply rounded |
absent |
present |
|
C. tenuigraphum |
2 |
2 |
2.7−3.0 |
2.5−3.0 |
steeply rounded |
Often on apicalapex: |
present |
|
2 |
1 |
2.92−3.47 |
2.78 |
steeply rounded |
absent |
absent |
|
|
1 |
1 |
1.65−1.8 |
3.09−3.4 |
obliquely truncateobliquely truncate: |
absent |
present |
Distribution
China (Fujian, Yunnan), India (Assam), Vietnam
Host plants
only recorded from Pistacia (Anacardiaceae) (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: MN199579
CAD: MN199596
