Triaenodes mexicanus, 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 : 27-28

Triaenodes mexicanus , new species

Fig. 18

As discussed above, this species is very similar to T. flintorum and may be a variant of it.

Adult (male: n=1). Forewing length 7.3 mm, hind wing length 6.5 mm. Head missing. Forewing light golden brown, with narrow line of cream colored hairs along anal margin.

Male genitalia. Abdominal segment IX anterior margin nearly straight, slightly produced anteroventrally; pleural region membranous, sparsely setose (or not evident); tergum IX, in dorsal view, with posteromesal margin indistinct, dorsomesal papillae not evident; 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, about half length of tergum X, with apical setae; tergum X, in dorsal view, with lateral margins subparallel, apex rounded; in lateral view, parallel sided, apex rounded, 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 attenuate; apicomesal lobe heavily setose, elongate, narrow, angularly broadened medially. Phallobase small, triangular, endothecal membranes prominent, highly convoluted, with pair of parameres, parameres short, stout, apices more heavily sclerotized; phalicata troughlike, straight, narrow throughout length, apex with deep, wide cleft, phallotremal sclerite small, u­shaped.

Holotype male: MEXICO: Morélos: Cuernavaca , vi.1911, Godman & Salvin ( UMSP000083660 ) ( BMNH).

Distribution. Mexico.

Etymology. Named for the country in which the type was collected.

Figures

FIGURE 18. Triaenodes mexicanus, new species. Male genitalia: A—lateral; B—dorsal; C—ventral; D—phallus, lateral; E—apex of phallus, ventral.