Neotrichia michaeli 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 : 5-6

Neotrichia michaeli Armitage and Harris , new species

Fig. 10

Diagnosis. Neotrichia michaeli is a member of the canixa species group of Keth et al. (2015) based on the apical horns of the tenth tergite and the bifid bracteoles, both characteristic of the group. The new species appears most similar to N. bika Ohah and Johanson , N. kehelia Olah and Johansen , and N. chihuahua Harris and Flint all of which have relatively short apical horns from the tenth tergite. The new species is recognized by the short, subapical spine of the phallus, which is also present in N. bika ,

and the widening extension of the ejaculatory duct. It differs from these species in the elongate ventral process 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 incomplete dorsolaterally, fused with tergite X dorsally, laterally bearing subapical setal-bearing lobes, anteriorly with medial incision; in ventral view shallowly incised laterally on posterior margin. Tergite X narrow, with pair of short, widely separated, squarish symmetrical, horns distally, subapically with pair of membranous lobes, basally fused with segment IX; in lateral view apical horn thick and hook-like distally. Subgenital plate in lateral view bulbous basally, narrowing distally to setal-bearing lobe, ventrally produced into an elongate tapering process; in ventral view wide basally, truncate distally with a pair of lateral setae, subapically with medial process. Bracteoles bifid, dorsal branch much longer than stub-like lower branch, bearing elongate setae apically. Inferior appendages bifid, outer portion narrow and gradually tapering posteriorly, inner portion thin and short; in ventral view narrow over length, slightly curving on inner margin to apical point, basal mesal processes about ¾ length of outer portion, wide basally, tapering to setal-bearing apex. Phallus tubular in dorsal view, constricted below mid-length and bearing a thin paramere encircling shaft, posterior portion narrow over length, incised subapically and containing an ejaculatory duct, apex divided into a pair of processes, apical-most process long and curving, in lateral view, the ejaculatory duct is contained within a narrow process, which is sharply downturned apically, the apical-most rod of the phallic tip is sickle-shaped, with a short basal spine.

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) . Paratype. Chiriqui Province, Cuenca 102, La Amistad International Park, Río Candela , Finca Felix , PSPSCB-PILA- C102-2017-021, 8.90614°N and 82.72882°W, 1,799 m, Malaise trap, 1–5 November 2017, E. Álvarez, E. Pérez, and T. Ríos, 1 male (SCH) .

Etymology. We take pleasure in naming this species in honor of the brother of the second author, who recently retired from the University of Louisville.

Figures

Figure 10. Neotrichia michaeli, sp.n. Male genitalia. A) Lateral view. B) Dorsal view. C) Ventral view. D) Phallus, lateral view. E) Phallus, dorsal view.