. Bulletin. Natural history; Natural history. 274 Illinois Natural History Survey Bulletin Fol. 23, Art. 1 ed into two lateral humps; from this neck there extends anterad a sclerotized plate which terminates in a loop encircled b\' a thin sclerotized thread apparently support- ing a connecting membrane; apical portion of aedeagus short, with a pair of thumblike, baso-lateral projections and with the pos- terior margin merging into a group of mem- branous folds embedded in which are a pair of stout sclerotized teeth. Female.—Similar in size, color and gen- eral structure to male. Genitalia as i
. Bulletin. Natural history; Natural history. 274 Illinois Natural History Survey Bulletin Fol. 23, Art. 1 ed into two lateral humps; from this neck there extends anterad a sclerotized plate which terminates in a loop encircled b\' a thin sclerotized thread apparently support- ing a connecting membrane; apical portion of aedeagus short, with a pair of thumblike, baso-lateral projections and with the pos- terior margin merging into a group of mem- branous folds embedded in which are a pair of stout sclerotized teeth. Female.—Similar in size, color and gen- eral structure to male. Genitalia as in fig. 920. Eighth segment short and cylindrical, sclerotized, the apex membranous and bear- ing a crown of long setae, each set in a conical membranous base. Ninth and tenth segments more or less tubular, not distinct- ly set off from each other, the tenth bearing a pair of apical styles. Bursa copulatrix complex, consisting of a series of mem- branous folds and narrow sclerotized rods at the attached end which culminate in a highly ornamented, lantern-like structure to which are attached two pairs of membra- nous ribbons. Holotype, male.—Fort Davis, Texas: April 19, 1939, along Limpia Creek, H. H. & J. A. Ross. Allotype, female.—Same data as for holotype. Paratypes.—Same data as for holotype, 26, 1$. Leucotrichia sarita new species This species may be distinguished from the preceding by the longer claspers and different shape of the eighth sternite. Male.—Length 4 mm. In color similar to preceding species but without any con- spicuous gray-green patch of hair on front wings. General structure typical for preced- ing species. Seventh segment without a mesal projection. Eighth segment with ter- gite fairly wide but much narrower than sternite; sternite with postero-dorsal corner produced into a large triangular lobe, ven- tral margin transverse and indistinct on the meson. Genitalia as in fig. 917. Ninth seg- ment long and round dorsally and laterally, but with th
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Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectnaturalhistory
