There are ten species of Lachesilla recorded from the United States. The following three have been found on corn (maize) during this work: L. nubilis (Aaron), L. pedicularia (Linné) and L. forcepata var. major Chapman, the first being the common species on corn around Urbana and Champaign, Ill.

The larvae of certain Trichoptera are known to fashion into their cases structures to which a “ballast” function has been ascribed (Stuck, 1900; Buchner, 1905; Rousseau, 1921; Lloyd. 1921; Needham and Lloyd, 1937). Of forms living in the Ithaca, New York, region the cases of Stenophylax scabripennis, Halesus guttifer, Neophylax, and Goera calcarata are offered as examples. The term “ballast” has been used to imply a balancing as well as a weighting purpose depending upon the particular species under discussion. Rousseau (1921) in describing the general types of caddis cases says “…. in the absence of current, they (the cases) do not in general offer such adaptations as those which we find in the larvae living in moving water.

Flies of the genus Thaumatomyia Zenker (=Chloropisca Loew) are small but common, and identification is frequenlly requested for faunal, ecological or other studies. Their highly polished, glabrous, usually yellow and black striped appearance stands out sharply among the many kinds of small dark flies captured by sweeping.