Cnodocentron (Caenocentron) immaculatum Flint 1991

Cnodocentron (Caenocentron) immaculatum

This species is close to C. galesus Schmid but differs in numerous characteristics of the male genitalia. The apical segment of the clasper is broader and more strongly arched, and the lobe of the ventral segment bears a strong tooth near the ventral margin in C. (C.) immaculatum.

ADULT.—Length of forewing, 3 mm. Color in alcohol, uniformly dark brown; forewing lacking any indication of white marks. Hindleg with apical spur slender, about half length of basal tarsomere. Fifth sternum with anterolateral region with cuticle modified and reticulate. Male genitalia: Ninth sternum with narrow anterolateral process, posterior margin not produced; tergum narrow, unmodified dorsally. Tenth tergum short, tip only slightly decurved, sclerotized laterally. Cercus long, slender, evenly sinuate in lateral aspect. Clasper 2-segmented; basal segment with a large posteroventral brush of long hair, and a single long, dark spine from mesal face of clasper near top of brush, lateral lobe long, broad, with apex truncate and mesal face bearing a strong, black spine near ventral margin; apical segment curved and produced dorsad near base, mesal face here bearing a short, black spine, apex slender. Phallus very long and slender, apex slightly enlarged and divided vcntrally; base flared, bell-like.

MATERIAL.—Holotype, male: COLOMBIA. DPTO. ANTIOQUIA: Quebrada La Jiménez, Sopetrán (trap C), 7 Feb 1984, U. Matthias. USNM Type.

Paratype: Same data as holotype, but 2 Sep 1983, 1.

Cnodocentron immaculatum là một loài Trichoptera thuộc họ Xiphocentronidae. Chúng phân bố ở vùng Tân nhiệt đới.