Cosmopterix clemensella
Stainton, 1860
Clemens' Cosmopterix
Sort #: 468 | P3 #: 420373 | MPG #: 1493
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Larval feeding type: leaf-miner
Larval substrate: Carex arctata* (Drooping Woodland Sedge), Carex lasiocarpa* (Woolly-fruited Sedge), Carex laxiflora (Broad Loose-flowered Sedge)
Phenology: Adult: 6/23 to 8/11 (4 records)
Comment: All reported C. lespedezae are almost certainly C. clemensella
Status in MA (automated assessment): Restricted distribution, uncommon
Status in N. America: Native
MA Endangered Species Act status: None
First Year Reported: 1942
Last Year Reported: 2021
Distribution by County: Franklin, Middlesex, Norfolk, Bristol, Plymouth, Dukes
Number of Records: 12
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Adult reared from larva mining Carex sp. (Photo: ©S. Whitebread) -
Adult reared from larva mining Carex sp. (Photo: ©S. Whitebread) -
Larval mine on Carex sp. with exudation of frass at end (Photo: ©S. Whitebread) -
Mine on Carex sp. opened to show larva (Photo: ©S. Whitebread) -
Mine on Carex sp. opened to show pupal exuvia (Photo: ©S. Whitebread)