Contulma tripui, 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 : 56-57

Contulma tripui , new species

Figs. 4 A–E

Contulma tripui is most similar to C. fluminensis based on the similarly complex morphology of the phallic apparatus, but it differs primarily in having the anterodorsal margin of segment IX prominently produced anteriorly and the lobe of the posterolateral margin of IX situated much more nearly medially than in C. fluminensis .

Length of forewing: 4.5 mm. Forewing color dark brown, immaculate; head, thorax, and appendages brown. Posterior foretibial spur about 1/2 length of anterior spur.

Male genitalia. Segment IX in lateral view broad, with anterodorsal margin prominently produced anteriorly, heavily setose ventrally; posterolateral margin produced medially to form broad, prominent, subtriangular, heavily setose lobe; posterodorsally with pair of lightly sclerotized, elongate, curved, ventrally directed, dorsomesal processes with rugose apices; dorsally segment IX highly reduced; sternum IX in ventral view with posteromesal, sclerotized, spatulate projection, surface longitudinally striate, apically cleft, anteromesally bearing about 4 flat, fused, toothlike setae. Inferior appendage in lateral view short, subtriangular, dorsal margin straight, bearing about 4 or 5 short setae, ventral margin heel-like; inferior appendages apparently fused to base of sternum IX projection, together forming highly complex structure as in Figs. 4 A, C, and inset. Processes of subphallic membranes absent (or not visible). Segment X highly reduced, entirely membranous. Phallus complex; phallobase sclerotized, tubular, curved; in dorsal view broad posteriorly, ventromedially with posterior membranous lobe, apicoventrally with lightly sclerotized lobe; apex of phallus with complex membranous lobes and sclerites as in Figs. 4 D, E; dorsally with paired, very large, highly convoluted, membranes; apicolaterally with paired, highly convoluted, membranous lobes, apically with large, broad, spatulate sclerites, bearing prominent keel-like longitudinal striae on their outer surfaces; phallotremal sclerite present, small, subspherical.

Female. Unknown.

Holotype male: BRAZIL: Minas Gerais: Estação Ecológica do Tripuí , Córrego Tripuí , 20°23’22”S, 43°32’32”W, el. 1070 m, 20.ix.1998, Paprocki, Braga ( UMSP 000046938) ( MZUSP).

Etymology. Named for the small stream in the ecological station of the same name, known for harboring an endemic species of onychophoran, Peripatus acacioi . Tripuí is the indigenous Tupi word for fast or quick water.

Figures

FIGURE 4. Contulma tripui n. sp. Male genitalia: A—Lateral; B—Dorsal; C—Ventral (inset, detail of sternum IX projection); D—Phallus, lateral; E—Phallus, dorsal.