Xiphocentron

Vilarino, Albane & Calor, Adolfo R., 2015, New species of Xiphocentron Brauer 1870 (Trichoptera: Xiphocentronidae) from Northeastern Brazil, Zootaxa 3914 (1) : -

Key for males of Xiphocentron from Brazil

There are six valid species of Xiphocentron with records in Brazil ( Fig. 4 ), including the two species herein described and the nomen dubium X. saltuum ( Müller 1921) ( Flint et al. 1999b). Consequently, the key diagnoses only the 5 species with known males.

1 Internal margin of each inferior appendage with sclerotized process bearing spines ( Figs. 1 E, 5A–B, 5D)............... 2

- Internal margin of each inferior appendage with spines but without sclerotized process ( Figs. 3 C–E, 5C)............... 4

2 (1) Sclerotized process apically with long spines ( Figs. 5 A, 5B)...................................... X. ilionea Schmid

- Sclerotized process with short spines ( Figs. 1 E, 5D).......................................................... 3

3 Inferior appendages each with strong shape discontinuity (twist) at about midlength ( Fig. 1 E); tergum X apically bifid; in dor- sal view, tergum X broad, at midlength about twice as wide as preanal appendages at same level ( Fig. 1 C) X. kamakan sp. n.

- I nferior appendages each without shape discontinuity; tergum X apically entire; in dorsal view, tergum X slender, at midlength with about same width as preanal appendages at same level ( Fig. 5 D)............................. X. steffeni (Marlier)

4 Basoventral margin of each inferior appendage strongly produced posterad ( Fig. 3 E); internal margin of inferior appendage with sclerotized indentations ( Figs. 3 C–D).................................................... X. maiteae sp. n.

- Basoventral margin of each inferior appendage not produced posterad ( Figs. 1 E, 5A); internal margins of the inferior append- ages each with two dense brushes of dark setae ( Fig. 5 C)............................... X. sclerothrix Pes & Hamada

Figures

FIGURE 1. Xiphocentron (Antillotrichia) kamakan Vilarino & Calor, new species, male. A—apex of left hind tibia and spurs and basitarsus; B—right wings, dorsal; C—genitalia, dorsal; D—genitalia, ventral; E—genitalia, left lateral; F—aedeagus apex, left lateral; G—aedeagus apex, dorsal.

FIGURE 3. Xiphocentron (Antillotrichia) maiteae Vilarino & Calor, new species, male. A—apex of left hind tibia and spurs and basitarsus, anterior; B—right wings, dorsal; C—genitalia, dorsal view; D—genitalia, ventral; E—genitalia, left lateral; F—aedeagus apex, left lateral; G—dorsal.

FIGURE 4. Distribution of Xiphocentron species recorded from Brazil, except X. saltuum (Müller), nomen dubium. Overlapping symbols indicate an overlap in species distributions.

FIGURE 5. Xiphocentron from Brazil, male genitalia. A— X. ilionea Schmid, left lateral; B—dorsal; C— X. sclerothrix Pes & Hamada, dorsal; D— X. steffeni (Marlier), dorsal. Illustrations modified from Schmid (1982), Pes & Hamada (2013), and Marlier (1964), respectively.