Neotrichia buenoi Harris and Flint, 2016

Harris, Steven C. & Oliver S. Flint, Jr., 2016, New species of microcaddisflies (Trichoptera: Hydroptilidae) from the western United States, Canada, Mexico and Belize, Insecta Mundi 2016 (499), pp. 1-22 : 2

Neotrichia buenoi Harris and Flint , new species

Fig. 1

On the basis of the reduced inferior appendages and phallus having a pair of sclerotized hooks, this species is placed in the caxima group of Keth et al. (2015) with closest similarity to N. caxima (Mosely) in the presence of the small lateral extensions from the tenth tergite. It differs from N. caxima in the rectangloid inferior appendages in lateral view and the lack of an apicolateral extension from segment IX.

Male. Length 1.8 – 2.1 mm. 18 antennal segments, body brown in alcohol. Segment VIII annular. Segment IX incomplete dorsolaterally, posteriorly rounded, anteriorly tapering to finger-like process; in ventral view shallowly incised on posterior margin, deeply incised on anterior margin. Tergite X posteriorly deeply incised, lateral margins produced into small ear-like processes; anteriorly fused with segment IX; laterally short, tapering to acute, upturned apex. Subgenital plate in lateral view wide basally, sharply narrowing distally with elongate seta from venter; in ventral view bulbous with narrow apical incision flanked by elongate setae. Bracteoles somewhat triangular in appearance, tapering distally to rounded apex. Inferior appendages in lateral view wide basally, tapering to an upturned rounded apex, short thin dorsal process with small setal-bearing lobe; in ventral view short and rounded apically, incised on mesal margins, pair of dorsal processes, lower truncate, upper beak-like on mesal margins. Phallus tubular, constricted near mid-length and bearing thin paramere encircling shaft, distally with pair of sclerotized rods, one elongate, other short and sharply curved, phallus apex tapered.

Type material. Holotype, male - Mexico, Veracruz, Las Tuxtlas, Rio Palma above La Palma , 2 June 1989, A. Contreras-Ramos ( NMNH) . Paratypes - same as holotype, 2 males ( NMNH).

Etymology. We take great pleasure in naming this species for our colleague Joaquin Bueno-Soria who has contributed much to the study of caddisflies of Mexico and Central America.

Figures

Figure 1. Neotrichia buenoi, n. sp. Male genitalia. A. Lateral view; B. Ventral view; C. Dorsal view; D. Phallus, lateral.