Cyclorhipidion trucaudinum

Taxonomic history

Cyclorhipidion truncaudinum 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): 202.

Diagnosis

4.0 mm long (mean = 4.0 mm; n = 3); 2.67−2.86 times as long as wide. This species is distinguished by the large size; truncatetruncate:
appearing cut off or suddenly shortened
declivitydeclivity:
downward slope of either the pronotum or elytra
surrounded by a granulategranulate:
pertaining to a coarse, grainy surface texture
circumdeclivital costacosta:
elevated ridge that is rounded at its crest, not necessarily with sharp appearance
; pronotumpronotum:
the dorsal surface of the thorax
subquadrate from dorsaldorsal:
of or relating to the upper surface; opposite of ventral
view (type 3); declivitaldeclivital:
pertaining to the elytral declivity
interstrial punctures replaced by a single row of tubercles; declivitaldeclivital:
pertaining to the elytral declivity
strial punctures large, distinct; declivitaldeclivital:
pertaining to the elytral declivity
face with 3 striaestria:
punctures in rows, which may or may not be impressed to make grooves
, distinctly sulcatesulcate:
deeply furrowed or grooved
on basalbase:
point or edge closest to the body; opposite of apex
1/2, surface rugoserugose:
appearing wrinkled
, coarsely sculptured and appearing undulating; declivitaldeclivital:
pertaining to the elytral declivity
striae impressedimpressed:
a depression in a surface
, striaestria:
punctures in rows, which may or may not be impressed to make grooves
1 more deeply impressedimpressed:
a depression in a surface
; and interstriaeinterstria:
longitudinal spaces along the elytra between the striae, which is not as<br /> impressed and bear smaller punctures.
1 inflatedinflated:
blown up; distended
on interstriaeinterstria:
longitudinal spaces along the elytra between the striae, which is not as<br /> impressed and bear smaller punctures.
/3 and interstriaeinterstria:
longitudinal spaces along the elytra between the striae, which is not as<br /> impressed and bear smaller punctures.
2 and 3 flat.

May be confused with

Cyclorhipidion amasoides, C. amputatum, C. circumcisum, C. muticum, C. umbratum, all of which are large and have an obliquely truncateobliquely truncate:
nearly truncate but rounded not flat in lateral view
or truncatetruncate:
appearing cut off or suddenly shortened
declivity

Distribution

Vietnam

Host plants

recorded from Lithocarpus (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

Sequences available for COI and CAD.

COI: MN619893

CAD: MN620177