Lauterborniella varipennis of authors, not Chironomus varipennisCoquillet 1902
Explanation of Names
Marmorata means marbled
Size
Adult about 3 mm, larval case about 7 mm
Identification
The combination of wing markings, leg markings, color, and expanded front femur is sufficient to identify this midge. Wing markings may be very faint.
Range
Cosmopolitan, except for South America where a complex of related species replaces it
Habitat
"Breeds in shallow water on the margins of the lakes." -- Hauber 1947
"Larvae are found in marshes, vegetation-choked, eutrophic ponds and lakes, and the sluggish portions of streams and rivers, where they swim around in their hydroptilid caddisfly-like silken cases."(1)