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 interrupta Flint, 1991
Fig. 26
interrupta
Flint, 1991: 41 [Type locality: Colombia, Dpto. Antioquia, Quebrada Espadera, 7 km E
Medellin
, on road to Sta. Elena; NMNH; male].
Diagnosis.
Leucotrichia
interrupta
can be separated from all other species in the genus by the unique form of the phallus apex, which is trilobed and has the 2 lateral lobes appearing more bulbous than lobe-like. A second characteristic unique to
Leucotrichia interrupta
is the slender sclerite arising from the base of the
"windows"
of the midlength complex and following the anterior edge of each of the lateral lobes. The inferior appendage is also distinct in its large, subtriangular shape when viewed laterally.
Description.
Male. Length of forewing 3.5 mm (n=1). Head unmodified, with 3 ocelli; antennae unmodified. Dorsum of head brown with yellow setae; thorax dark brown with bright yellow setae dorsally, brown ventrally; leg segments with brown setae. Forewings covered with fine yellow setae, apical 1/4 with dark brown setae. Genitalia. Abdominal sternum VII with mesoventral process broken (indicated in Fig. 26D). Sternum VIII in ventral view with posterior margin very shallowly concave. Segment IX anterolateral margin produced mesally, posterolateral margin irregular; in dorsal view anterior margin concave, posterior margin straight. Tergum
x
with dorsal sclerite simple; ventral sclerite simple; membranous apex truncate. Subgenital plate with dorsal arm hollow, triangular (Fig. 26A); ventral arm slender, tapering apically, curved ventrad, in ventral view subovate. Inferior appendage subtriangular, without dorsal spine; in ventral view entirely fused, apically digitate. Phallus apex trilobed; lateral lobes bulbous and with slender, elongate, sinuate sclerite along outer edge; short spines present on dorsal surface of all 3 lobes.
Material examined.
Holotype male: COLOMBIA: Antioquia: Quebrada Espadera, 7 km E
Medellin
, rd. to Santa Elena, 24.ii.1983, O.S. Flint, Jr. (USNM 104528) (NMNH). Paratypes: Same data as holotype, 1 female (NMNH).
Etymology.
Unknown.