单词	clypeus
释义	clypeus /ˈklɪpɪəs / noun (plural clypei /ˈklɪpɪʌɪ/) Entomology A broad plate at the front of an insect’s head.Although the clypeus and labrum of Reboursia exhibit a sphaeromatoid shape, it has a broad separation between the antennular basal articles.... Their monophyly is undisputed, given the five elongate, stiff mouthpart elements forming a distinctive beak, and an enlarged clypeus. Antennae are placed midway between clypeus midpoint and lateral margin of head, projecting laterally along anterior margin of head. Derivatives clypeal adjective ... This genus is easily recognized by its sharply notched clypeal margin and the unique dorsellum. It can be identified by its brown to black color, well-developed petiolar process, and no median clypeal tooth. Above the clypeal arch are two lateral clusters of strong basiconic sensillae, but no definite antennary rudiments are to be seen. Origin Mid 19th century: from Latin, literally 'round shield'.
随便看	polyphyletism polyphyllous polyphylly polyphyly polyphyodont polypi polypian polypide polypide bud polypiety polypifer polypiform polypill polypite polyplacophoran polyplacophore polyplastid polyploid polyploidise polyploidization polyploidize polyploidized polyploidizing polyploidogenic polyploidy

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