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Inter- and intraspecific variation in body size and scutal marking pattern in three species of Conchapelopia (Diptera: Chironomidae)

Inter- and intraspecific variation in body size and scutal marking pattern in three species of Conchapelopia (Diptera: Chironomidae)

Entomological Science 4(1): 39-45

Adult Conchapelopia collected in a stand using light-traps were classified into three species, which were distinguished only by the male genitalia. The male body sizes (wing length) of these species decreased consistently from spring to summer, and increased again in fall. When larvae from the bottom of small streams and ponds near the light-trapping site were reared, smaller adults emerged under high temperature conditions. In addition to body size, scutal marking patterns varied inter- and intraspecifically, ranging from no marking to entirely darkened vittae. In one species, males with darkened vittae tended to appear in relatively cold seasons. The implications of this finding for the taxonomic classification of this group are discussed.

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Accession: 003480806

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