File:Aquatic insects of California, with keys to North American genera and California species (1956) (19560510318).jpg

Title: Aquatic insects of California, with keys to North American genera and California species
Identifier: aquaticinse00usin (find matches)
Year: 1956 (1950s)
Authors: Usinger, Robert L. (Robert Leslie), 1912-1968
Subjects: Aquatic insects; Insects
Publisher: Berkeley, University of California Press
Contributing Library: University of Connecticut Libraries
Digitizing Sponsor: LYRASIS Members and Sloan Foundation

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! Fig. 10:25. Distinguishing structures of Trichoptera. a, Oxye- i'iSiro pallida, aedeagus; b, Leucotrichia pictipes, male genitalia, sterol; c, Ochrotrichia mono, male genitalia, lateral; c„ tenth ^rgite; d, Ochrotrichia lometa, male genitalia, lateral; du tenth jrgite; e, Ochrotrichia trapoiza, male genitalia, lateral; f, Hydro- tila acorna, male genitalia, lateral; fu aedeagus; g, Chyranda entralis, head of male; h, Agraylea saltesea, male genitalia, literal; hu ventral view; h2, style of seventh sternite; hs, aede- gus; i, Hydroptila rono, male genitalia, lateral; ix, aedeagus; /, hydroptila xera, male genitalia, lateral; ju aedeagus; /2, tenth srgite; ji, claspers, ventral; k, Hydroptila argosa, male genitalia, iteral; ku aedeagus; kj, claspers, ventral; fe}, eighth tergite of 255 Denning: Trichoptera 11. Metanotum with a distinct, widened ventrolateral area (fig. 10:240, case as in fig. 10:2i Ochrotrichia Mosely 1934 — Metanotum without a widened, lateral area (fir;. 10:24t») Hydroptila Dalman 1819 Genus Oxyethira Eaton 1873 Although about twenty-four Nearctic species occur in this genus, only one, 0. pallida (Banks) 1904 (fig. 10:25a) (Riverside County), is known to occur in California. It is certain that additional species will be collected in the state. Genus Leucotrichia Mosely 1934 Four species have been assigned to this genus. One species, L. pictipes (Banks) 1911 (fig. 10:256), is transcontinental in distribution and is recorded from California (Placer and Tulare counties). The other three species occur in the Rocky Mountain region and Texas. Genus Ochrotrichia Mosely 1934 Of the twenty-two species in this genus, only three have been collected in California. Generally the species are found in clear, cold, rapidly flowing streams. They may be identified by reference to figures of the male genitalia. lometa (Ross) 1941 (fig. 10:25<f) mono (Ross) 1941 (fig. 10:25c) trapoiza Ross 1947 (fig. 10:25<?) Mono County Mono County Mono County Genus Agraylea Curtis 1834 Three Nearctic species belong to the genus. In the Midwest and certain of the Mountain States members of this genus are often abundant along lakes or other permanent bodies of water. The only species known from California is A. saltesea Ross 1938 (fig. 10:25A) (Tuolumne and Madera counties). Denning (1937) has described the egg-laying habits of a closely related species, A. multinunctata. One female is recorded as remaining submerged for one hour and eight minutes. Genus Hydroptila Dalman 1819 This is the largest genus in the family, containing about fifty species. Four species have thus far been collected in California. Since the genus is so abun- dant and widespread it is probable that many more species will eventually be collected in the state. female; k4, eighth sternite of female (a,b,g, Ross, 1944; c,d,i, Ross, 1941; e, Ross, 1947; f, Denning, 1947a; h,,,k, Ross, 1938).

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