Neotrichia pinnacles 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 : 4-5

Neotrichia pinnacles Harris and Flint , new species

Fig. 7

This species appears to be a member of the okopa group of Keth et al. (2015) having a posterolateral extension of segment IX, a tapered tenth tergum, simple tapered inferior appendages, and simple phallus apex. Neotrichia pinnacles is similar to N. osmena Ross in having short, triangular inferior appendages in ventral view, but differs in these appendages being elongate and narrow in lateral view.

Male. Length 2.0 mm. 18 antennal segments, body brown in alcohol. Segment VIII annular. Segment IX fused dorsally with segment X, posteriorly rounded with sclerotized extension, which tapers to downturned acute process and ventral point basally, anteriorly rounded; in ventral view shallowly incised on anterior margin, sclerotized lateral extensions, which taper posteriorly. Tergite X tapering posteriorly to shallow apical incision, lateral processes tapering to acute apices; laterally elongate, dorsum narrowing to acute apex, thin lateral process extending about half length of segment. Subgenital plate in lateral view wide basally, narrowing distally with elongate seta at apex; in ventral view wide basally, tapering to narrow rounded apex, which bears pair of setae, subapically with two pair of elongate setae. Bracteoles spatulate, gradually widening distally and curving dorsad; in dorsal and ventral views narrow basally, widening distally and sharply curving inward. Inferior appendages thin in lateral view, wide basally, narrowing mesally to widened tapered apex, truncate process on inner surface basally; in ventral view short and trianguloid, wide basally, incised on inner margins to rounded apices, short truncate processes on inner basal margins. Phallus tubular, slightly constricted near mid-length and bearing thin paramere encircling shaft, internally with narrow rectangular plate, bifid distally and enclosing ejaculatory duct, phallus apex rounded.

Type material. Holotype, male - United States, California, San Benito County, Pinnacles National Monument, Chalone Creek , 1.4 km NW Bear Creek, 28 August 2003, P. Johnson III ( NMNH)

Etymology. Named for the Pinnacles National Monument where the species was collected.

Figures

Figure 7. Neotrichia pinnacles, n. sp. Male genitalia. A. Lateral view; B. Ventral view; C. Dorsal view; D. Phallus, dorsal.