Contulma boliviensis, Holzenthal, Ralph W. & Robertson, Desiree R., 2006

Holzenthal, Ralph W. & Robertson, Desiree R., 2006, Four new species of Contulma from South America (Trichoptera: Anomalopsychidae), Zootaxa 1355, pp. 49-59 : 50-52

Contulma boliviensis , new species

Figs. 1 A–E

Contulma boliviensis is a member of the Cranifer Group of Holzenthal & Flint (1995) based on the possession of an elongate dorsolateral process posteriorly on segment IX of the male genitalia. It stands isolated within the group as no other species has such a deeply excavated, C-shaped segment IX, but it shares with C. ecuadorensis Holzenthal and Flint and C. cranifer elongate, semimembranous sub-phallic processes. The phallus of this new species, with its flap-like, downturned, lateral flanges, is also unique.

Length of forewing: 4.6 mm. Forewing (in alcohol) completely denuded, forewing membrane brown, with 4 light spots in membrane along costal margin, another near nygma; head, thorax, and appendages brown. Posterior foretibial spur very small, much shorter than anterior spur.

Male genitalia. Segment IX in lateral view narrow, C-shaped, with anterior margin strongly rounded, produced anteriorly; posterior margin highly excavated medially, greatly produced ventrally, to form prominent, rounded, setose lobe; posterodorsally with pair of sclerotized, elongate, sinuate, dorsolateral processes, apices acute, turned medially; dorsally segment IX narrow mesally with short, shelflike extension; sternum IX in ventral view with small, posteromesal, shelf-like projection. Inferior appendage in lateral view short, digitate, sparsely setose apically. Processes of subphallic membranes present, digitate, setose, longer than inferior appendages and lateral to inferior appendages. Segment X elongate, membranous, with lightly sclerotized lateral flanges. Phallus relatively simple; phallobase sclerotized, tubular, elongate, straight; in dorsal view not broad posteriorly, laterally with flap-like, downturned flanges, subapicoventrally with paired membranous lobes; apex of phallus with membranous and semimembranous lobes as in Figs. 1 D, E; phallotremal sclerite not evident.

Female. Unknown.

Holotype male: BOLIVIA: Santa Cruz: Parque Nacional Amboró, 17°50’15”S, 64°23’29”W, 2030 m, flight intercept trap, AMB 21FIT002, 17–20.x.2001, Spector, Ledezma ( UMSP 000086401) ( UASC).

Etymology. Named for the type country, in recognition of the first species in the genus Contulma to be described from Bolivia.

Figures

FIGURE 1. Contulma boliviensis n. sp. Male genitalia: A—Lateral; B—Dorsal; C—Ventral; D— Phallus, lateral; E—Phallus, dorsal.