Neotrichia paraxicana, Harris & Armitage & Ríos González, 2024

Harris, Steven C., Armitage, Brian J. & Rios Gonzalez, Tomas A., 2024, The Trichoptera of Panama XXIV. Fifteen new species and two new country records of the caddisfly genus Neotrichia (Trichoptera, Hydroptilidae), with a key to all known Panamanian species, ZooKeys 1188, pp. 47-90 : 47

Neotrichia paraxicana sp. nov.

Fig. 13

Type locality.

Panama: Veraguas Province: Cuenca 132, Santa Fe District, Santa Fe NP, Quebrada Mulabá, Santa Fe NP, PSPSCB-PNSF-C132-2017-009; 8.52560°N, 81.12956°W; 623 m a.s.l.

Type material.

Holotype: ♂, Panama: Veraguas Province: Cuenca 132, Santa Fe District, Santa Fe NP, Quebrada Mulabá, Santa Fe NP, PSPSCB-PNSF-C132-2017-009; 8.52560°N, 81.12956°W; 623 m a.s.l.; 20.iv.2017; A. Cornejo, T. Ríos, C. Nieto leg.; UV light trap; MIUP-020-T-2023 (in alcohol).

Other material examined.

Panama • ♂; Veraguas Province: Cuenca 097, Santa Fe District, Santa Fe NP, Río Piedra de Moler; PSPSCB-PNSF-C097-2017-012; 8.56553°N, 81.18817°W; 340 m a.s.l.; 20.iv.2017; A. Cornejo, T. Ríos, E. Álvarez, C. Nieto leg. ; UV light trap • ♂; Panama Province: Panama Canal, date and locality of collection illegible on label; D. Denning leg.

Diagnosis.

Neotrichia paraxicana sp. nov. is another member of the N. canixa group of Keth et al. (2015) based on the posterior horns from tergum X, forked bracteole, bifid inferior appendage, and the forked phallic apex. The new species is most similar to N. xicana (Mosely, 1937), reported from Mexico and Panama ( Holzenthal and Calor 2017), based on both having a posterolateral process from segment IX, which is lobate apically. However, in the new species this process is very short, and the phallic apex is multi-forked.

Description.

Male. Total length 1.6-1.8 mm (n = 3), 18 antennal segments, wings and body brown in alcohol. Genitalia (Fig. 13 ). Abdominal segment VIII annular. Segment IX in lateral view generally ovate, rounded anteriorly, setae-bearing lobe dorsally, posteriorly fused with segment X dorsally, incised posteroventrally, short posterolateral process with multiple small lobes apically; in ventral view posterior margin deeply incised laterally, anteriorly margin broadly incised; in dorsal view posterolateral process from IX visible as a curving, tapering process with subapical lobes laterally. Tergum X basally fused with segment IX, posteriorly produced into pair of thick, symmetrical horns; in lateral view distal horn is thin and tapering to acute apex. Subgenital plate in lateral view, wide basally, tapering apically to rounded apex, with acute downward pointing spike; in ventral view wide basally, rounded laterally to apicomesal extension bearing stout setae laterad. Bracteole in lateral view wide anteriorly, bifid posteriorly, dorsal branch ~ 2 × as long as ventral branch; in ventral and dorsal views both branches wide basally, tapering to rounded apices. Inferior appendage wide basally with narrow basal process ventrally, abruptly narrowing at midlength and curving upward to thin, truncated apex; in ventral view bifid, outer process elongate, wide basally and tapering to acute apices with inner spike, inner process fused basally and narrow over length, shorter than outer process. Phallus tubular, constricted at midlength and bearing thin paramere encircling shaft, apex divided into four spine-like processes, ejaculatory duct protruding subapically.

Distribution.

Panama: Veraguas Province (Santa Fe National Park).

Etymology.

This species is named for its overall resemblance to Neotrichia xicana . The name is an adjective used as a substantive in the genitive case.

Figures

Figure 13. Neotrichia paraxicana sp. nov., male holotype, genitalia A left lateral B ventral C dorsal D phallus, left lateral.