. An annotated list of the Diptera (flies) of Oregon. Diptera. Vol. XI] COLE AND LOVETT—L1ST OF OREGON D1PTERA 261 Family DOLICHOPODID^. Fig. 23. Argyra nigripes Locw. These flies are small and usually shining green in color but occasionally black or yellow. The tarsi are long and often ornamented in the males; these and the curiously modi- fied claspers of the male genitalia furnish some of the best specific characters. The adults are slender and delicate and many are found about damp places in rank growth. They are predatory, darting over leaves or the surface of water in search of their pre
. An annotated list of the Diptera (flies) of Oregon. Diptera. Vol. XI] COLE AND LOVETT—L1ST OF OREGON D1PTERA 261 Family DOLICHOPODID^. Fig. 23. Argyra nigripes Locw. These flies are small and usually shining green in color but occasionally black or yellow. The tarsi are long and often ornamented in the males; these and the curiously modi- fied claspers of the male genitalia furnish some of the best specific characters. The adults are slender and delicate and many are found about damp places in rank growth. They are predatory, darting over leaves or the surface of water in search of their prey. Little is known of the early stages of American species. The larvae have been recorded as predaceous on other larvae and also as feeding in plant tissues. A great majority are aquatic, such as Dolichopus, Hydrophorus, and Campsic- nemis. 361. Sciapus pilicornis (Aldr.) Hood River, VI-2 and 20. (Cole). M. C. Van Duzee det. 1904, Trans. Amer. Ent. Soc, XXX, p. 282 (Psilopo- dinus.) 362. Chrysotus choricus Wheeler Forest Grove, VI-2 (Cole). 363. Chrysotus discolor Loew Narrows, VII-1. December 14, 1921. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Cole, Frank R. (Frank Raymond); Lovett, Arthur Lester, 1885-. [San Francisco]
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectdiptera, bookyear1921
