Elmomorphus simplex is a species of beetle of the family Dryopidae. This species is found in China (Fujian, Hunan, Jiangxi, Zhejiang).

Description Adults reach a length of 3.36–3.89 mm (males) and 3.24–3.96 mm (females). Their body is broadly oval, strongly convex dorsally and integument black. The mouthparts, antennae, trochanters, and tarsi are reddish brown.

Etymology The species name is derived from Latin simplex (meaning simple) and refers to the simple elytral surface lacking striae and plastron.Taxonomic revision of the genus Elmomorphus Sharp, 1888.II. Redescription of the genus and review of the species from India, Nepal, Bhutan, Myanmar, China, Thailand, Laos, Cambodia, and Vietnam (Coleoptera: Dryopidae)

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