Tricosa cattienensis
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Tricosa cattienensis holotype lateral; R.K. Osborn |
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Tricosa cattienensis holotype dorsal; R.K. Osborn |
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Tricosa cattienensis holotype declivity; R.K. Osborn |
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Tricosa cattienensis holotype frontal; R.K. Osborn |
Taxonomic history
Tricosa cattienensis Cognato, Smith and Beaver (in Cognato et al. 2020aCognato et al. 2020a:
Cognato AI, Smith SM, Beaver RA. 2020a. Two new genera of Oriental xyleborine ambrosia beetles (Coleoptera, Curculionidae: Scolytinae). Zootaxa 4722: 540-554. https://doi.org/10.11646/zootaxa.4722.6.2): 548.
Diagnosis
2.7−3.1 mm long (mean = 2.98 mm; n = 5); 2.5−2.7 times as long as wide. This species is distinguished by the discaldiscal:
pertaining to the disc of either the pronotum or elytra
interstrial punctures confusedconfused:
of markings, having indefinite outlines or running together as lines or spots without definite pattern; usually referring to punctures
; protibia distinctly triangular; anterior margin of pronotumpronotum:
the dorsal surface of the thorax
with a clear row of six moderate serrationsserration:
row of asperities; a saw-like structure 
.
This species is very similar to T. indochinensis but can be distinguished by the smaller size and stouter form.
May be confused with
Distribution
China (Hong Kong), Japan, Thailand, Vietnam
Host plants
known only from Pterocarpus (Fabaceae), Machilus (Lauraceae), and a cut liana (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.
