Chimarra (Curgia) margaritae Flint 1991

Chimarra (Curgia) margaritae Flint

Chimarra (Curgia) margaritae Flint, 1991:26.

MATERIAL EXAMINED.—COLOMBIA, DPTO. ANTIOQUIA, 12 km NW Medellín [road to San Pedro], 13 Feb 1983, O.S. Flint, Jr., 23 (including holotype), 5; same, but 20 Feb 1984, C.M. and O.S.Flint, Jr., 7, 3. Quebrada Bocana, 8 km E Medellín [road to Sta. Elena], 24 Feb 1983, O.S. Flint, Jr., 1. 12 km E Medellín [road to Sta. Elena], 6 Feb 1983, O.S. Flint, Jr., 6, 1. 24 km NW of Medellín [road to San Jerónimo], 22 Feb 1984, C.M. and O.S. Flint, Jr., 2. 27 km NW of Medellín [road to San Jerónimo], 23 Feb 1984, C.M. and O.S. Flint, Jr., 10, 4. 12 km N Fredonia [road to Medellín], 22 Feb 1983, 2000 m, O.S. Flint, Jr., 4, 2. Quebrada Cocorná, Aug 1981. R. Vélez, 6, 3 (UNCM); same, but A. Madrigal C., 2, 1 (UNCM); same, but Jul 1980, A.M. del Corral, 1 (UNCM). San Luis, Sep 1980, A.M. del Corral, 3 (UNCM). DPTO. VALLE DEL CAUCA, Topacio, 1600 m, 13 Sep 1985, A.D. Quintero, 6, 3.

ECUADOR, PCIA. TUNGURAHUA, 13 km E Baños, 1550 m, 15 Sep 1990, O.S. Flint, Jr., 4, 5.

ETYMOLOGY.—Patronym, in honor of Margarita M. Correa G., a student of Trichoptera at the University of Antioquia, who helped me greatly during my trips to Colombia.

Chimarra (Curgia) margaritae

This very bright and attractive Chimarra is day active and commonly seen fluttering around cascades and pools in small streams on the forested slopes around Medellín. I take great pleasure in dedicating it to Margarita María Correa Gómez.

Although the species corresponds in general to the typical plan of the subgenus Curgia it is unique in the subgenus by having a divided tenth tergum. The blackened process from the posterior margin of the ninth segment is very different from anything elsewhere as are the apicoventral scabrous lobes of the phallus.

ADULT.—Length of forewing, 6.5–9 mm. Color black and orange: head, thorax, abdomen, coxae, and femora orange; antennae, palpi, tibiae, tarsi, and wings black. Forewing without a bulla in the radial system; hindwing with 4 branches to Rs, and 3 to M. Male genitalia: Eighth sternum nearly parallel-sided; tergum produced posteromesally into a broad, rounded lobe. Ninth sternum slightly produced anteroventrally, posteroventral keel well developed; with a blackened process from posterior margin between clasper and tenth tergum. Cercus a small, ovoid lobe. Tenth tergum in lateral aspect an elongate, rounded rod, in dorsal aspect deeply divided mesally; each lobe with many sensillae. Clasper rather rectanguloid in lateral aspect, dorsal margin serrulate, with a distinct, upright, apicomesal lobe. Phallus tubular, inflected basally, apex membranous, but with sclerotized dorso- and ventrolateral bands; apex dorsally with a transverse band of dark, small spines, ventrally with dark, paired sclerites bearing many spicules, and arising from a sclerotized basal structure (none of these apical structures is apparently retractable).

MATERIAL.—Holotype, male: COLOMBIA. DPTO. ANTIOQUIA: 12 km NW Medellín [road to San Pedro], 13 Feb 1983, O.S. Flint, Jr. USNM Type.

Paratypes: Same data as holotype, 22, 5; same, but 20 Feb 1984, C.M. and O.S. Flint, Jr., 7, 3. Quebrada Bocana 8 km E Medellín [road to Sta. Elena], 24 Feb 1983, O.S. Flint Jr., 1. 12 km E Medellín [road to Sta. Elena], 6 Feb 1983 O.S. Flint, Jr., 6, 1.. 24 km NW of Medellín [road to Sar Jerónimo], 22 Feb 1984, C.M. & O.S. Flint, Jr., 2. 27 km NW of Medellín [road to San Jerónimo], 23 Feb 1984, C.M. & O.S Flint, Jr., 10, 4. 12 km N Fredonia [road to Medellín], 22 Feb 1983, 2000 m, O.S. Flint, Jr., 4, 2. Quebrada Cocorná Aug 1981, R. Vélez, 6, 3 (UNCM); same, but A. Madriga C., 2, 1 (UNCM); same, but Jul 1980, A.M. del Corral, 1 (UNCM). San Luis, Sep 1980, A.M. del Corral, 3 (UNCM) DPTO. VALLE DEL CAUCA: Topacio, 1600 m, 13 Sep 1985 A.D. Quintero, 6, 3.