Triaenodes cuyotenango, Holzenthal & Contents, 2004

Holzenthal, Ralph W. & Contents, Trond Andersen Table Of, 2004, The caddisfly genus Triaenodes in the Neotropics (Trichoptera: Leptoceridae), Zootaxa 511 (1), pp. 1-80 : 19-20

Triaenodes cuyotenango , new species

Fig. 10

Triaenodes cuyotenango and a number of other species have a digitate dorsomesal process of tergum X, with tergum X having a rounded or truncate apex ( T. mexicanus , T. peruanus , T. tuxtlensis and variants of T. delicatus ). This new species can be separated from the others by its very long dorsomesal process.

Adult (male: n=2). Forewing length 5.6–6.3 mm, hind wing length 4.8–5.2 mm. Eye 0.42–0.43 mm wide. Antennal scape 0.46–0.47 mm long. Maxillary palp segment lengths (in mm): 0.26–0.32, 0.35–0.39, 0.51–0.52, 0.27–0.29, 0.48–0.53. Forewing golden brown, with narrow line of cream colored hairs along anal margin.

Male genitalia. Abdominal segment IX anterior margin slightly rounded, slightly produced anteroventrally; pleural region membranous, setose; tergum IX, in dorsal view, with posteromesal margin rounded, with pair of minute dorsomesal papillae; sternum IX in lateral view with posterior margin sinuate. Preanal appendage setose, about as long as wide, constricted basally, apex subacute. Dorsomesal process of tergum X digitate, originating basally, long, extending beyond apex of tergum X, with apical setae; tergum X, in dorsal view, with lateral margins subtriangular, apex slightly excavate medially; in lateral view, parallel sided, apex truncate, with lateral flange, apicolateral margins with microtrichia. Inferior appendage subquadrangular basally, setose, with long, tapering, apicoventral projection; recurved process gradually downturned, narrow, tapering throughout length, apex sharply attenuate; apicomesal lobe heavily setose, elongate, narrow, slightly broadened subbasally. Phallobase small, triangular, endothecal membranes prominent, highly convoluted, with pair of parameres, parameres subequal, long, gently curved, tapering; phalicata troughlike, straight, narrow throughout length, apex with shallow cleft, phallotremal sclerite not evident.

Holotype male: GUATEMALA: Suchitepquez : Cuyotenango, 10–20.vi.1966, Flint & Ortiz ( UMSP000083650 ) ( NMNH).

Paratype: GUATEMALA: Chimaltenango: Chimaltenango , 19–20.iii.1965, P J Spangler — 1 male ( NMNH) .

Distribution. Guatemala.

Etymology. Named for the type locality, the town of Cuyotenango, Guatemala.

Figures

FIGURE 10. Triaenodes cuyotenango, new species. Male genitalia: A—lateral; B—dorsal; C— ventral; D—phallus, lateral, inset: apex of phalicata, ventral.