Metrichia calovebora, 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

Metrichia calovebora sp. nov.

Fig. 9

Type locality.

Panama: Veraguas Province: Cuenca 097; Santa Fe District; Santa Fe NP; Río Calovébora; PSPSCB-NPSF-C-097-2017-005; 8.54318°N, 81.16398°W; 536 m a.s.l.

Type specimen.

Holotype: male, Panama: Veraguas Province: Cuenca 097; Santa Fe District; Santa Fe NP; Río Calovébora; PSPSCB-NPSF-C-097-2017-005; 8.54318°N, 81.16398°W; 536 m a.s.l.; Malaise trap; T. Ríos, E. Álvarez, C. Nieto, leg.; 19-23.iv.2017; MIUP-007-T-2023 (in alcohol). Paratypes: Same as for holotype; 2 males; MUPADI (in alcohol).

Diagnosis.

This species with the posteromesally incised inferior appendage is similar to M. palida Bueno-Soria & Santiago-Fragoso and M. thomsonae Harris & Armitage both of which occur in Panama. However, the phallus is more similar to M. cafetalera Botosoneanu from Cuba, which also has a pair of prominent apical hooked spines; however, the phallus of M. cafetalera lacks the lateral process seen in M. calovebora sp. nov.. Also, the inferior appendage of M. cafetalera differs in the ventral position of the posterior incision.

Description.

Male. Total length 2.1-2.3 mm, 18 antennal segments, forewings with patch of scales on anterior portion, body brown in alcohol. Abdominal segment V with small pair of rounded sacs on dorsum. G enitalia. Segment VII annular with short ventromesal process. Segment VIII triangular, tapering ventrally; in ventral view very short, slight incision mesally on posterior margin, anterior margin rounded; in dorsal view truncate. Segment IX triangular, tapering anteriorly into segment VII, posterior margin sinuate; in ventral view incised mesally on posterior margin; anterior margin rounded; in dorsal view posterior margin expanded mesally. Preanal appendage (cercus) rectangular in lateral view, dorsally ovate. Dorsolateral hook in lateral view narrow over length, tapering apically and curving ventrad; in dorsal view wide basally, tapering to acute apices, curving on outer margin with subapical spike. Segment X shelf-like in lateral view, tapering distally; in dorsal view broadly rounded, membranous apically. Inferior appendage in lateral view incised posteroventrally, dorsal lobe larger than ventral lobe, dorsal and ventral margins nearly parallel-sided; in ventral view narrow over length, subapically abruptly narrowing on inner surface, diverging basally and curved on mesal margin; in dorsal view thin and rectanguloid. Phallus in dorsal view narrowing at midlength, where originates a lateral process, distal portion with pair of large, hooked spines, which appear to be bifid, subapical in position; in lateral view, outer subapical spine more curved than inner spine which appears to originate from base of outer spine, apex expanded and plate-like.

Distribution.

Panama.

Etymology.

This species is named for the Río Calovébora where the species was collected.

Figures

Figure 9. Metrichia calovebora sp. nov., male holotype, genitalia A left lateral B dorsal C ventral D phallus apex, left lateral E phallus, dorsal.