dcsimg

Comprehensive Description

provided by Smithsonian Contributions to Zoology
Leptonema andinum

This species is a member of the plicatum group, closely related to L. simplex Mosely from Ecuador. It is distinguished from the latter primarily by the structure of the apex of the phallus. In L. andinum the lateral angles of process a are produced into points, process g is more pointed with the point directed dorsad, process b ends in an evenly reflexed point, and there is a strong lateral row of small teeth apically on the phallotheca.

ADULT.—Length of forewing, 15–18 mm. Color pale green; forewing with fuscous hair over nygmal spots. Malar space narrow, about 1/8 height of eye. Parafacial and postocular areas about as wide as malar; postocular area with a row of 5 stout setae. Maxillary palpus with fifth segment 2/3 length of basal four segments. Processes of fifth sternum large, ovoid. Male genitalia: Tenth tergum with warts a and b on short stalks; lateral lobe rounded apically, ventral margin irregularly sinuate. Clasper with apical segment short, terite; basal segment 4 times as long as apical, base unmodified. Phallobase elongate, slightly angled; apicolateral surface with a row of points, dorsad of which the surface is very lightly sclerotized; a large, produced in lateral points directed basad; b developed into a uniform, reflexed, pointed process; g with a small apical expansion directed dorsad and pointed.

MATERIAL.—Holotype, male: COLOMBIA. DPTO. ANTIOQUIA: Quebrada Espadera, 7 km E Medellín [road to Sta. Elena], 24 Feb 1983, O.S. Flint, Jr. USNM Type.

Paratypes: Same data as holotype, but 6 Mar 1984, C.M. & O.S. Flint, Jr., 2. DPTO. VALLE DEL CAUCA: Finca La Florida, Tablones, 1300 m, Jan 1959, J.F.G. Clarke, 1.
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bibliographic citation
Flint, Oliver S., Jr. 1991. "Studies of Neotropical Caddisflies, XLV: The Taxonomy, Phenology, and Faunistics of the Trichoptera of Antioquia, Colombia." Smithsonian Contributions to Zoology. 1-113. https://doi.org/10.5479/si.00810282.520