| 单词 | riffle beetle |
| 释义 | > as lemmasriffle beetle riffle beetle n. any of various small aquatic beetles that live in fast-flowing water and crawl rather than swim; esp. one of the herbivorous family Elmidae. ΘΚΠ the world > animals > invertebrates > phylum Arthropoda > class Insecta > order Coleoptera or beetles and weevils > [noun] > Adephaga (carnivorous beetles) > Hydradephaga (aquatic) > member of (water-beetle) water beetle1658 riffle beetle1916 1916 J. G. Needham & J. T. Lloyd Life Inland Waters iv. 224 The Riffle beetles (Parnidæ and Amphizoidæ) prefer flowing water. They do not swim, but clamber over the surfaces of logs and stones. 1940 Copeia No. 4. 225 The Coleoptera larvae were the immature forms of the riffle beetle, Elmis sp. 1972 Nature 10 Mar. 60/1 The Elminthidae, or riffle beetles, are a family of freshwater beetles in the superfamily Dryopoidea. 1993 Daily Tel. 20 May 10/8 A colony of riffle beetles, believed extinct since the 1960s, has been found by the River Stour in Dorset. < as lemmas |
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