PROC. ENTOMOL. SOC. WASH. 95(3), 1993, pp. 327-350 REVIEW OF THE GENUS CHELIPODA MACQUART OF AMERICA NORTH OF MEXICO (DIPTERA: EMPIDIDAE; HEMERODROMIINAE) John F. MacDonald Department of Entomology, 1 158 Entomology Hall, Purdue University, W. Lafayette, Indiana 47907-1158. Abstract.— The genus Chelipoda Macquart is reviewed for America north of Mexico. Descriptions of C contractu Melander, C. elongata (Melander) (Lectotype designated), C. praestans Melander, C. sicaria Melander, C americana (Melander) (new combination), Chelipoda limitaria n. sp., and Chelipoda truncata n. sp. are presented. A key to males and females, illustrations of male terminalia, known distributions, and comments on biology and systematics are included. Key Words: Diptera, Empididae, Hemerodromiinae, Chelipoda, Phyllodromia Adult flies of the genus Chelipoda Mac-quart are very small (body length about 2 mm) and delicate. They possess strong rap-torial fore legs, and their legs and body usu-ally are predominantly yellow to yellowish brown. The wings are relatively slender since they lack an anal lobe. Chelipoda has been placed in the subfamily Hemerodromiinae, the taxonomy of which was treated by Me-lander (1902, 1928, 1947). This paper is limited to species of Chelipoda of America north of Mexico and includes revised de-scriptions of known species, descriptions of two new species, a key to male and female adults, known distributions, and comments on biology and systematics. In addition to species treated here, representatives fitting the present concept of Chelipoda are re-ported from: China (Yang and Yang 1990); India, Indonesia, Philippines and Taiwan (Melander 1928); Europe (Chvala and Wag-ner 1989, Collin 1961, Engel 1956); New Zealand (Collin 1928); and South America (Collin 1933, Lynch Arribalzaga 1878, Smith 1967). Materials and Methods The present study was facilitated by ex-amination of the large numbers of Cheli-poda adults added to North American col-lections since Melander's (1947) revision. The following institutions (acronyms fol-lowing) loaned the material upon which this work is based: American Museum of Nat-ural History, New York (AMNH); Cana-dian National Collection, Biological Re-sources Division, Agriculture Canada, Ottawa (CNC); California Academy of Sci-ences, San Francisco (CAS); Cornell Uni-versity, Ithaca (CU); Florida State Collec-tion of Arthropods, Gainesville (FSCA); Helzinki Zoological Museum (HZM); Pur-due University Entomological Research Collection (PERC); Snow Museum, Uni-versity of Kansas, Lawrence (UKL); United States National Museum of Natural His-tory, Washington, D.C. (USNM); Univer-sity of Minnesota, St. Paul (UMSP); Uni-versity of New Hampshire, Durham (UNH); University of Wisconsin, Madison (UWM); and Utah State University, Logan (USU).