Notes on Chromagrion conditum in Michigan
Distribution of Chromagrion conditum in Michigan, based on MOS records. Click on map for larger image
A monotypic genus, the dark larvae of C. conditum are easily distinguished by their angular posterolateral head, narrow legs, and dark, white-mottled and eventually white-tipped caudal gills (Walker 1953, Westfall and May 1996). Widely distributed in Michigan (more common in the LP than the UP), larvae are found in unpolluted spring-fed brooks with ample riparian shading as well as clean ponds and lakes, clinging to submerged vegetation, leaves and other debris (Needham and Heywood 1929, Garman 1927). Larvae emerge from late May through June.
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