Chimarra (Curgia) plaumanni Flint 1983

Chimarra (Curgia) plaumanni Flint

Chimarra (Curgia) plaumanni Flint, 1983:19.

ADULT.—Length of forewing, 6–8 mm, 8–9 mm. Color uniformly jet black.

Male Genitalia: Eighth sternum narrow, slightly widened dorsad; tergum with posteromesal margin produced into a short, broad angle (eighth segment omitted from Figures 30, 31). Ninth segment slightly enlarged anteroventrally; tergal area broad; posteroventral keel produced into a short, trianguloid process. Cercus elongate, rounded apically. Tenth tergum entire; in lateral aspect produced into a blunt, broad apex; in dorsal aspect with tip narrow, pointed, with a sharp basolateral point; apically with many sensillae arranged around apex; ventrolateral process with a short, posteroventral lobe. Clasper elongate, tapering apicad, with a small dorsomesal lobe; in ventral aspect with inner margin slightly produced apicad, with a subapical, mesal tooth. Phallus tubular, with apicodorsal surface produced; internally with a small, basal, rod-and-ring assembly and many (40 to 50) short, black spines.

MATERIAL.—BRAZIL, EDO. SANTA CATARINA, Nova Teutonia, 27°11′S, 52°23′W, 300–500 m, 19 Jan 1964, F. Plaumann, holotype (NMNH); same, but 11 Oct 1936, 2, 1 (BMNH); same, but 11 May 1938, 1 (BMNH).

VARIANT.—BRAZIL, EDO. SANTA CATARINA, Blumenau, Loth. Hetschko, 1 (BMNH). Santa Catharina [probably from near Blumenau where Müller worked most of his life], F. Müller, McLachlan Coll., 1, 2 without abdomen (BMNH).

ETYMOLOGY.—Patronym, in honor of Fritz Plaumann, the late Brazilian entomological collector.

Chimarra (Curgia) plaumanni

This species is somewhat intermediate between C. moselyi Ross and C. conica, new species, in that the shape of the clasper is more like that of C. moselyi, but the shape of the tenth tergum is more like that of C. conica. Chimarra plaumanni is distinguished from both by the tenth tergum, which in dorsal aspect is concave laterally with a small basolateral point, and by the clasper, which is broader laterally with a dorsomesal point and obliquely truncate apically.

ADULT.—Length of forewing, 7 mm. Color jet black in entirety. Forewing without a bulla in radial system; hind wing with 4 branches to Rs, a closed discal cell, and 3 branches to M.

Male Genitalia: Eighth sternum narrowed ventrally; tergum unmodified. Ninth segment enlarged anteroventrally; posterolateral margin angled sharply mesad; posteroventral keel pointed apically. Cercus enlarged and rounded apically. Tenth tergum hoodlike, enlarged apically in lateral aspect; in dorsal aspect with lateral margins concave, with a distinct basolateral point; venter laterally developed into a long ventral projection, apex of which is angled posteriad above clasper. Clasper slightly elongate, broad in lateral aspect, with a distinct dorsomesal tooth at midlength; in ventral aspect with apex obliquely truncate. Aedeagus tubular with apicodorsal surface strongly sclerotized, ventral margin short; internally with a small rod and ring assembly and over 40 small, black spines.

MATERIAL.—Holotype (male): BRAZIL, EDO. SANTA CATARINA, Nova Teutonia (27°11′S, 52°23′W), 300–500 m, 19 Jan 1964, Fritz Plaumann, USNM Type 100483.