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.