A revision of the Neotropical caddisfly genus Leucotrichia Mosely, 1934 (Hydroptilidae, Leucotrichiinae)
Author
Thomson, Robin E.
Author
Holzenthal, Ralph W.
text
ZooKeys
2015
499
1
100
http://dx.doi.org/10.3897/zookeys.499.8360
journal article
http://dx.doi.org/10.3897/zookeys.499.8360
1313-2970-499-1
7F1EE873CBBC476B984DF483D91B4901
Taxon classification Animalia Trichoptera Hydroptilidae
Leucotrichia limpia Ross, 1944
Fig. 30
limpia
Ross, 1944: 273 [Type locality: United States, Texas, Fort Davis, Limpia Creek; INHS; male.] -
Flint 1970
: 6 [male];
1996
: 86 [correction of errors in
1970
paper].
Diagnosis.
Leucotrichia limpia
is most similar to
Leucotrichia botosaneanui
,
Leucotrichia chiriquiensis
,
Leucotrichia hispida
, and
Leucotrichia viridis
. These species share a similar combination of characteristics present in the phallus and the posterolateral margin of sternum VIII, as discussed under
Leucotrichia botoeaneanui
. The mesodorsal spines and short spines on the apical lobes of the phallus apex (Figs 30E, F) and the small single-pointed mesoventral process of sternum VII separate
Leucotrichia limpia
from the other 4 species in this group.
Description.
Male. Length of forewing 3.0-4.6 mm (n=13). Head unmodified, with 3 ocelli; antennae unmodified. Dorsum of head dark brown with light yellow setae; thorax dark brown with light yellow setae dorsally, brown ventrally; leg segments with brown setae. Forewings covered with fine dark brown setae with scattered patches of light yellow setae. Genitalia. Abdominal sternum VII with short, acute mesoventral process. Sternum VIII in ventral view with posterior margin concave. Segment IX anterolateral margin convex, posterolateral margin straight; in dorsal view anterior margin concave, posterior margin convex. Tergum
x
with dorsal sclerite simple; ventral sclerite semielliptic with tridentate posterior margin; membranous apex small, suborbicular. Subgenital plate with dorsal arm digitate, with slight mesal constriction; ventral arm broadest basally, tapering apically, in ventral view obovate. Inferior appendage basally subquadrate, apex truncate, bearing single dorsal spine; in ventral view entirely fused, subtriangular. Phallus with median complex bearing basal supports; apex bearing pair of stout spines dorsally, many short spines mesoventrally, and 2 membranous apical lobes bearing many short spines dorsally.
Material examined.
Holotype male: USA: Texas: Fort Davis, along Limpia Creek, 19.iv.1939, H.H. and J.A. Ross (INHS
Trichoptera
#22335) (INHS). Allotype female: Same data as for holotype (INHS). Nontypes: COSTA RICA: Puntarenas: roadside seep, route 2 just W km 234,
8.976°N
,
83.299°W
, el. 100m, 20.ii.1986, Holzenthal, Morse, and Fasth, 1 male, 1 female (UMSP); MEXICO: Chiapas: Chorreadero, Chiapa de Corzo, 11.viii.1967, O.S. Flint, Jr., 1 male, 2 females (NMNH); Oaxaca: Tamazulapan, 7-8.vi.1967, Flint and Ortiz, 1 male (NMNH); San Luis
Potosi
: Rancho Quemada, Rt. 85 km 353, 4-6.viii.1966, O.S. Flint, Jr., 1 male (NMNH); USA: Arizona: Yavapai Co., spring outfall at Bubbling Ponds Fish Hatchery, Page Springs, 23.iv.1993, S.R. Moulton and K.W. Stewart, 1 male, 1 female (in alcohol) (NMNH); Coconino Co., West Fork, 16 mi SW Flagstaff, elev. 6500', 5.viii.1961, R.W. Hodges, 1 female (NMNH); Tucson, 2033 E. Helen St., 12.x.2010, R.B. Nagle, 1 male (NMNH); Tucson, 2033 E. Helen St., 12.x.2010, R.B. Nagle, 1 female (NMNH); Texas: Val Verde Co., Devils River, Dolan Creek.,
29° 53.4'N
,
100°59.6'W
, 3.vi.1967, C.M. and O.S. Flint, Jr., 1 male (NMNH); Brewster Co., Big Bend National Park, Windows Creek, 5-10.iv.1993, J. Gelhaus, 1 female (NMNH); Val Verde Co., Devils River, Dolan Falls area, elev. 360 m, 17.v.1993, at light along Devils River, J. Gelhaus #589, Nelson, and Koenig, 2 males, 3 females (in alcohol) (NMNH); Val Verde, Co., Devils River, Dolan Falls,
29°53.0'N
,
100°59.6'W
, 2.vi.1997, C.M. and O.S. Flint, Jr., 1 male, 5 females (in alcohol) (NMNH); Brewster Co., Big Bend National Park, Chisos Mountains, spring fed creek in Oak Canyon (Window Trail), elev. 1425 m,
103°20'N
,
29°17'W
, malaise trap, 5-11.iv.1993, J. Gelhaus #559 and D. Koenig, 2 males, 2 females (in alcohol) (NMNH); Val Verde Co., Devils River, Dolan Creek,
29°53.4'N
,
100°59.6'W
, 3.vi.1997, C.M. and O.S. Flint, Jr., 2 females (NMNH); Brewster Co., Big Bend National Park, Windows Creek, 5-10.iv.1993, J. Gelhaus, 2 females (NMNH); Val Verde Co., San Felipe Springs, Del Rio,
29°22.1'N
,
100°53.1'W
, 1.vi.1997, C.M. and O.S. Flint, Jr., 9 females (NMNH).
Etymology.
Named for Limpia Creek, the location where the holotype was collected.