Cerasmatrichia veraguasensis, Harris & Armitage, 2023

Harris, Steven C. & Armitage, Brian J., 2023, The Trichoptera of Panama XXII. Sixteen new microcaddisfly species (Trichoptera, Hydroptilidae), ZooKeys 1174, pp. 35-74 : 35

Cerasmatrichia veraguasensis sp. nov.

Fig. 7

Type locality.

Panama: Veraguas Province: Cuenca 132; Santa Fe District; Santa Fe NP; Quebrada Primer Brazo Mulabá; PSPSCB-PNSF-C132-2017-007; 8.52577°N, 81.13045°W; 623 m a.s.l.

Type specimen.

Holotype: male, Panama: Veraguas Province; Cuenca 132; Santa Fe District; Santa Fe NP; Quebrada Primer Brazo Mulabá; PSPSCB-PNSF-C132-2017-007; 8.52577°N, 81.13045°W; 623 m a.s.l.; Malaise trap; 19-23.iv.2017; A. Cornejo, T. Ríos, E. Álvarez, C. Nieto, leg.; MIUP-005-T-2023 (in alcohol). Paratype: Same as for holotype; 1 male; MUPADI (in alcohol).

Diagnosis.

This species is similar to C. akanthos Armitage & Harris, from Panama and C. garfioza sp. nov., both of which have an elongate posterior process from segment IX. The new species is easily identified by the sclerotized process from abdominal segment VIII, the absence of the inferior appendage, and the lack of a ventromesal process on abdominal segment VIII.

Description.

Male. Total length 1.8 mm, head unmodified, antennae with 21 segments, scape and pedicel twice as long as proximal flagellomeres, forewings dark brown with white horizontal bands in middle, body brown in alcohol. G enitalia. Abdominal segment VII annular without ventromesal process. Segment VIII tapering posteroventrally; in ventral view quadrate, broadly emarginate posteriorly, clump of stout setae on lateral margins; in dorsal view, narrow, posterior margin emarginate. Segment IX somewhat rectanguloid, anteriorly truncate, tapering ventrad, posterior margin tapering ventrad, prominent hooklike sclerotized process posterodorsally from truncate extension of IX; in dorsal view elongate, anteriorly deeply emarginate, posteriorly divided into two sections, lower section thin and bandlike, upper section roundly tapering distally, slightly incised mesally on posterior margin, lateral posterior processes curving sharply inward apically; in ventral view rectangular, slightly incised anteriorly and posteriorly, narrow posteriorly, lateral processes gently curving inward distally. Segment X bulbous laterally, setose on dorsal surface, dorsally triangular, membranous distally. Inferior appendage lacking, although the process from segment VIII may constitute an inferior appendage. Subgenital plate in lateral view bifid, upper arm thicker and longer than lower, each bearing short spikes, in dorsal view mesally divided into triangular processes which curve outward distally, with serrate outer margins; in ventral view divided mesally, abruptly tapering subapically, apex rounded with lateral spike. Phallus tubular, in lateral view slightly narrowing near midlength, apical portion cylindrical with pair of elongate sclerotized rods; in dorsal view cylindrical apically, narrowing laterally, apically with incised flange, pair of subapical rods which slightly diverge apically.

Distribution.

Panama.

Etymology.

This species is named for the Veraguas Province, where the species was collected.

Figures

Figure 7. Cerasmatrichia veraguasensis sp. nov., male holotype, genitalia A left lateral B dorsal C ventral D phallus, dorsal E phallus apex, left lateral.