Lype lubaretsi, Arefina, Tatyana I., 2005

Arefina, Tatyana I., 2005, Two new species and new records of caddisflies (Insecta: Trichoptera) from the Far East of Russia, Zootaxa 1088, pp. 45-53 : 46-48

Lype lubaretsi , new species

Fig. 1

Holotype male. RUSSIA: Amurskaya Oblast: Aldikon River near Norsk Village (Amur River Basin), 16.vi.2004, T.I. Arefina.

Paratype. Same data as holotype, 1 male.

Adult. Length of forewing: 4.8 mm. Head and legs yellowish, thorax and abdomen light brown, wings pale.

Male genitalia. Sternite IX with broad rounded projection on posterior margin in lateral view. Dorsal projection of tergite IX very short, with blunt apex in dorsal view. Segment X tapering, semicircular distally, with small rounded medial excision at apex in dorsal view. Preanal appendage elongate, flat, broadened medially in dorsal view, gradually tapering distally to blunt apex; extending slightly beyond segment X. Inferior appendage directed posterad, comprised of 2 segments: basal segment short, subquadrate, taller in lateral view than terminal segment; terminal long, straight in lateral view, constricted medially in ventral view, with apex rounded in lateral view, and acute, turned inwards in ventral view. Phallic apparatus massive; apex of aedeagus bilobed with shallow medial excision, lobes rounded.

Diagnosis. The male of the new species is similar to L. phaeopa Hagen 1868 and L. zwicki in the shape of the preanal appendages ( Fig. 1 A & B) and terminal segment of the inferior appendages ( Fig. 1 A). Lype lubaretsi has an apical excision in segment X ( Fig. 1 B), which is absent in the other 2 species; in addition, it differs from them in the shape of the aedeagal apex ( Fig. 1 D). The new species can be easily distinguished from other species of the genus by the very short dorsal projection of tergite IX.

Distribution. Known only from the type locality.

Etymology. The new species is named after a friend of mine, Lubarets Valery Fedorovich, who has made many interesting collections of caddisflies.

Figures

FIGURE 1. Lype lubaretsi, new species, holotype (male genitalia): A. Lateral view; B. Dorsal view; C. Ventral view; D. Phallus, distal part, dorsal view.