Leucotrichia pictipes (Banks, 1911)

Thomson, Robin E. & Holzenthal, Ralph W., 2015, A revision of the Neotropical caddisfly genus Leucotrichia Mosely, 1934 (Hydroptilidae, Leucotrichiinae), ZooKeys 499, pp. 1-100 : 32-33

publication ID

https://dx.doi.org/10.3897/zookeys.499.8360

publication LSID

lsid:zoobank.org:pub:7F1EE873-CBBC-476B-984D-F483D91B4901

persistent identifier

https://treatment.plazi.org/id/8333C9FB-1F23-3911-0D9B-D1139349A3AE

treatment provided by

ZooKeys by Pensoft

scientific name

Leucotrichia pictipes (Banks, 1911)
status

 

Taxon classification Animalia Trichoptera Hydroptilidae

Leucotrichia pictipes (Banks, 1911) View in CoL Figs 3C, 34

pictipes (Banks, 1911: 359) [Type locality: United States, New York, Johnstown, Hales Creek; MCZ; male; in Orthotrichia ]. - Ross 1938: 10 [as Stactobia pictipes (Banks)]. - Ross 1944: 120 [to Leucotrichia ]. - Flint 1970: 10 [male, distribution]. - Nielsen 1948: 11 [misidentified as Ithytrichia confusa Morton].

Diagnosis.

Leucotrichia pictipes is similar to Leucotrichia fairchildi , Leucotrichia imitator , and Leucotrichia sarita . Leucotrichia pictipes bears patches of scales, both on the dorsum of the head and the eversible membranous lobe beneath the posterolateral wart, which are absent in all 3 of the other species. The genitalia of Leucotrichia pictipes are similar to that Leucotrichia imitator , in having multiple membranous lobes arising from the apex of the phallus. While Leucotrichia imitator has 3 lobes, Leucotrichia pictipes can be distinguished by having 2 sets of symmetrically arranged lobes.

Description.

Male. Length of forewing 2.5-4.0 (n=88). Head with patches of scales dorsally; posterolateral warts large, eversible, with scaled membranous lobes revealed when everted, with 2 ocelli; antennae with scape slightly enlarged, pedicel subtriangular, basal 3 flagellomeres narrow and compact. Dorsum of head brown with yellow setae; thorax brown with yellow setae dorsally, brown ventrally; leg segments with brown setae. Forewings covered with fine brown setae with transverse stripe of yellow setae on basal 1/2 and small scattered patches of yellow setae on distal 1/3. Genitalia. Abdominal sternum VII with mesoventral process replaced by tuft of dense, prominent setae. Sternum VIII in ventral view with posterior margin concave. Segment IX anterolateral margin convex, posterolateral margin convex; in dorsal view anterior margin concave, posterior margin broadly concave. Tergum × with dorsal sclerite slender; ventral sclerite semielliptic with tridentate posterior margin; membranous apex not well developed. Subgenital plate with dorsal arm not apparent; ventral arm hollow, apex acute (Fig. 34A), in ventral view base with crenulate margin, apex rounded. Inferior appendage digitate, bearing single dorsal spine; in ventral view apex rounded. Phallus apex bearing U-shaped internal apodeme, broad ventral sclerite, and 2 pairs of membranous apicodorsal lobes.

Material examined.

Holotype male: USA: NEW YORK: Johnstown, Hales Creek, collected in June, Alexander (MCZ11597) (MCZ). Nontypes: MEXICO: Chihuahua: Riito, Hwy 16, 10 mi E Yepachi, 28.vi.1987, Kondratieff and Baumann, 1 male, 1 female (in alcohol) (NMNH); USA: California: Tulare Co., 3 Rivers, 13.viii.1975, J.L. Cross, 19 males, 8 females (in alcohol) (NMNH); American River, Sacramento, 18.vi.1985, C.M. and O.S. Flint, Jr., 1 female (in alcohol) (NMNH); Colorado: Grand Co., Colorado River near Hot Sulphur Springs, 4.viii.1973, R.W. Baumann and W.P. Stark, 1 male, 2 females (in alcohol) (NMNH); Fremont Co., Cañon City, 27-29.v.1987, G.F. and J.F. Hevel, 2 males, 2 females (in alcohol) (NMNH); Maryland: Frederick Co., Small Creek, Hwy 77, 30.vi.1972, Baumann and Cross, 1 male (in alcohol) (NMNH); Montana: Madison Co., Madison River at Norris, 21.vi.1978, Groemhild, 4 males, 3 females (in alcohol) (NMNH); New Mexico: Sandoval Co., Valles Caldera National Preserve, Lower San Antonio Creek, NW border of Preserve, 35°57.8'N 106°36.9'W, 2.vii.2008, Parmenter et al., 17 males, 11 females (in alcohol) (NMNH); Sandoval Co., Caldera National Preserve, along E Fork Jemez River, “Dagobah,” 35°50.2'N, 106°30.1'W, 30.vi.2008, Parmenter et al., 1 male (in alcohol) (NMNH); Oregon: Douglas Co., S Umpqua River, 5 mi below junction of Myrtle Creek, Stn. M., 3.vi.1976, M.J. Stansburg, 2 males, 1 female (in alcohol) (NMNH); Pennsylvania: Warren Co., Spring Creek, 1.5 mi S Spring Creek village, 41°51.3'N, 79°32.4'W, 28.viii.1998, O.S. Flint, Jr., 1 male (in alcohol) (NMNH); Warren Co., Lainard Bush, Spring Creek, 41°52'N, 79°32'W, 4.vi.2000, L. Bush, 1 male (in alcohol) (NMNH); Virginia: Bath Co., Jackson River, Rt. 603, 2 mi S Rt. 687, 11.ix.1979, C.M. and O.S. Flint, Jr., 1 male, 1 female (in alcohol) (NMNH); Farquier Co., Broad Thoroughfare Gap, 27.v.1961, O.S. Flint, Jr., 2 males, 3 females (in alcohol) (NMNH); Bath Co., Jackson River at Rt. 603 bridge, 24.v.1974, B. Strickler, 1 male (in alcohol) (NMNH); Fauquier Co., Broad Run, Thoroughfare Gap, 15.vii1974, O.S. Flint, Jr., 1 male, 2 females (in alcohol) (NMNH); Fauquier Co., Broad Run, Thoroughfare Gap, 10.v.1974, O.S. Flint, Jr., 25 males, 20 females (in alcohol) (NMNH); West Virginia: Pendleton Co., Smoke Hole Camp, 28-29.viii.1963, R. and O. Flint, 2 males, 2 females (in alcohol) (NMNH); Wisconsin: St. Croix County, Apple River at Somerset on Highway 64, 22.v.1993, R.J. Blahnik, 1 male (UMSP); St. Croix County, Apple River at Somerset on Highway 64, 22.v.1993, R.J. Blahnik, 1 female (UMSP); Douglas Co., Upper St. Croix River near Gordon, 26.v.1994, R.J. Blahnik, 1 male (UMSP); Douglas Co., Upper St. Croix River near Gordon, 26.v.1994, R.J. Blahnik, 1 female (UMSP); Wyoming: Teton Co., Crawfish Creek, tributary to Lewis River, 12.v.1992, G. Roemhild, 2 males, 1 female (in alcohol) (NMNH); Yellowstone National Park, Madison Junction, 19.viii.1962, P. and P. Spangler, 1 male (in alcohol) (NMNH).

Etymology.

Unknown.