Neotrichia maya 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 : 3-4

Neotrichia maya Harris and Flint , new species Fig. 4

Neotrichia maya is another member of the canixa group of Keth et al. (2015) with similarities to N. corniculans Flint , N. pamelae Harris and Armitage , N. sandyae Ruiter , and N. vekonyka Olah and Johanson , in the shortened lower portion of the bracteoles. It differs from these species in the elongate posteroventral extension of abdominal segment IX and in the ventral aspect of the inferior appendages.

Male. Length 1.5 - 1.7 mm. 18 antennal segments, body brown in alcohol. Abdominal segment VIII annular. Segment IX incomplete dorsolaterally, posteriorly sinuate with setal-bearing lobe on dorsum, posteroventrally extended into tapering sclerotized process, anteriorly rounded; in ventral view shallowly incised on posterior margin, medially a narrow plate, which tapers posteriorly, deeply incised anteriorly; dorsally fused with segment X. Tergite X narrow, with elongate pair of symmetrical, sclerotized horns distally, which may cross or be widely separated, basally fused with segment IX, with small, lateral setal-bearing lobes; in lateral view elongate, with apical horns about half length of segment. Subgenital plate in lateral view narrowing distally to downturned apex, which bears an elongate seta; in ventral view wide basally, narrowing distally to sharp medial point, which is flanked by a pair of elongate setae. Bracteoles bifid, dorsal branch elongate, with long seta apically, ventral branch greatly reduced, bearing short seta. Inferior appendages thin and elongate in lateral view with apex slightly upturned, ventral process about same length of appendage; in ventral view extending nearly to tip of subgenital plate, narrowing and sharply angled apically, mesal processes elongate, wide basally, narrowing distally and bearing apical seta. Phallus tubular, constricted at mid-length and bearing thin paramere encircling shaft, apex divided into pair of short processes, ejaculatory duct protruding distally.

Type material. Holotype, male - Belize, Stann Creek District, Cockscomb Wildlife Preserve, Cockscomb A, B4, Maya Mountains , el. 200 m, N16-80, W88-55, 10 – 11 May 1990, subtropic wet forest, M. Adams and L. Dow ( NMNH) . Paratypes - same as holotype, 2 males ( NMNH).

Etymology. Named for the Maya Mountains where the species was collected whose name reflects the Maya people living in the region.

Figures

Figure 4. Neotrichia maya, n. sp. Male genitalia. A. Lateral view; B. Ventral view; C. Dorsal view, variation of dorsal horns in insert; D. Phallus, ventral, enlarged apex, lateral.