Neotrichia yayas Armitage and Harris, 2020

Armitage, Brian J. & Harris, Steven C., 2020, The Trichoptera of Panama XIV. New species of microcaddisflies (Trichoptera: Hydroptilidae) from Omar Torrijos Herrera National Park, Insecta Mundi 763, pp. 1-19 : 7

Neotrichia yayas Armitage and Harris , new species

Fig. 12

Diagnosis. Neotrichia yayas belongs to a cluster of Neotropical species with characteristic elongate processes from abdominal segment IX, including N. tatianae Armitage and Harris , N. colmillosa Harris , and N. gilmari Santos and Nessimian. The new species is readily identified by the lobate inferior appendages and the shape of the subgenital plate.

Description. Length 1.2–1.4 mm, 18 antennal segments, overall color brown (in alcohol). Abdominal segment VIII annular.

Male genitalia. Segment IX narrow, undulate posteriorly, bearing elongate sclerotized processes dorsolaterally, one turning downward at apex, the other straight and acute, posteroventrally with elongate finger-like process; in dorsal view square, posterior margin with triangular process, lateral rods thin and sinuate, anterior margin slightly incised medially; in ventral view, posterior margins incised laterally with truncate mesal process, anterior margin shallowly emarginate, short lateral processes curving outward. Segment X thin and elongate in lateral view, dorsally elongate, gradually tapering to a rounded apex with small incision. Bracteole wide basally, narrowing into a thin, finger-like process distally bearing an apical seta. Subgenital plate in lateral view narrowing distally to rounded apex bearing elongate subapical seta, posteroventrally with thin, elongate process, which extends below the inferior appendages; in ventral view narrow over length, posterior margin divided into lateral lobes, each bearing thickened seta. Inferior appendages wide basally, narrowing distally with posterior margin divided into three small tooth-like processes; in ventral view triangular, small teeth along inner margin and apically, basally with short processes from inner margin, narrowing to rounded apices with subapical inner points. Phallus tubular in dorsal view, constricted at mid-length and bearing a thin paramere encircling shaft, posterior portion narrow over length with rounded apex having ejaculatory duct protruding.

Female and larva. Unknown.

Type material. Holotype male. Panama, Coclé Province, Cuenca 134, Omar Torrijos Herrera National Park , Quebrada Las Yayas , PSPSCB-PNGDOTH-C134-2017-004, 8.66168°N and 80.5952°W, 602 m, Malaise trap, 22-26 March 2017, E. Álvarez, E. Pérez, and T. Ríos (COZEM) . Paratypes. ibid., 3 males (MIUP) ; ibid., Chiriqui Province, Quebrada Jaramillo, K. Collier property, 8.76320°N and 82.41383°W, 20–25 April 2018, B. Armitage, 1 male (MUPADI) ; ibid., Darién Province, Cuenca 156, Darién National Park, Rancho Frio , 8.01981°N and 77.73250°W, 125 m, A. Thurman, 5–12 February 2018, 1 male (SCH) .

Etymology. Named for the stream, Quebrada Las Yayas, where the species was first collected.

Figures

Figure 12. Neotrichia yayas, sp.n. Male genitalia. A) Lateral view. B) Ventral view. C) Dorsal view. D) Phallus apex, dorsal view.