Leucotrichia angelinae Thomson & Holzenthal

Thomson, Robin E. & Holzenthal, Ralph W., 2015, A revision of the Neotropical caddisfly genus Leucotrichia Mosely, 1934 (Hydroptilidae, Leucotrichiinae), ZooKeys 499, pp. 1-100 : 9-10

Taxon classification Animalia Trichoptera Hydroptilidae

Leucotrichia angelinae Thomson & Holzenthal sp. n. Fig. 7

Diagnosis.

Leucotrichia angelinae sp. n., is most similar to Leucotrichia fulminea sp. n. These species share several similarities in the mesoventral process of sternum VII, inferior appendage, subgenital plate, and phallus, as discussed under Leucotrichia fulminea . In ventral view, the inferior appendage of Leucotrichia angelinae has an oval shape, while the inner margin in Leucotrichia fulminea is concave. Leucotrichia angelinae can also be distinguished by the presence of a short dorsal arm on the subgenital plate, which is lacking in Leucotrichia fulminea .

Description.

Male. Length of forewing 3.6-4.4 (n=3). Head unmodified, with 3 ocelli; antennae unmodified. Dorsum of head dark brown with light green and dark brown setae; thorax dark brown with dark brown setae and mint green setae at edges, brown ventrally; leg segments with brown setae. Forewings covered with fine mottled light gray-green setae with dark brown setae along edges. Genitalia. Abdominal sternum VII with digitate mesoventral process. Sternum VIII in ventral view with posterior margin concave. Segment IX anterolateral margin convex, posterolateral margin irregular; in dorsal view anterior margin shallowly concave, posterior margin irregular. Tergum × with dorsal sclerite simple; ventral sclerite semielliptic with tridentate posterior margin; membranous apex with dorsal and ventral lobes. Subgenital plate with dorsal arm short, curved dorsad, tapering apically; ventral arm elliptic with basal projection, in ventral view obovate with 2 small apical projections. Inferior appendage apex rounded, without dorsal spine; in ventral view oval, with subquadrate basal projection on outer margin. Phallus apex bearing pair of slender mesodorsal sclerites and pair of pointed apicodorsal sclerites extending outwards.

Holotype male: VENEZUELA: Mérida: Cacuta, 10 km E Tabay, 22.ii.1976, C.M. and O.S. Flint (UMSP000142591) (NMNH). Paratypes: Same data as holotype, 1 male, 1 female (NMNH); 19 km N Mérida, 5600 ft, 9.ii.1978, blacklight, Andean mountain forest, J.B. Heppner, 1 male (UMSP).

Etymology.

Named in honor of Angel Fowler, friend and colleague, for all her help in the field.