Species: Patrus corpulentus (Régimbart, 1884)
Classification
Phylum: Arthropoda
Class: Insecta
  Order: Coleoptera
   Family: Gyrinidae
    Genus: Patrus

Morphology:
Adult:
 -The elytral glabrous region of P. corpulentus male not cordiform, and the elytral apex narrowly in male or weakly rounded in female with visible apicolateral sinuation.


Figure



Habitat: - P. corpulentus appears to occur at low elevations rather than in high-elevation mountain streams.

Distribution:
 - Surat Thani Province: Khao Sok National Park., Mae Yai Waterfall.
- Ranong Province.
- Phuket Province.

Work cited:
 - Suksai, B., Gustafson, G.T., Sites, R.W. and Sangpradub, N. 2021. Review of the Patrus landaisi species group from Thailand with description of three new species (Coleoptera, Gyrinidae). Zootaxa 4991(3): 561–591.



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