Neotrichia anzuelo Armitage and Harris, 2018

Armitage, Brian J. & Harris, Steven C., 2018, The Trichoptera of Panama V. Descriptions of new species, new country records, and a synonymy, Insecta Mundi 604, pp. 1-11 : 4

Neotrichia anzuelo Armitage and Harris , new species

Fig. 5

Description. Holotype male. Length 1.6–1.8 mm, 18 antennal segments, brown in alcohol. Abdominal segment VIII annular. Segment IX incomplete dorsolaterally and fused with segment X, bearing dorsal setal-bearing lobe, medially rounded posteriorly, anteriorly with ventromedial lobe; dorsally narrowing posteriorly, setal-bearing lobes laterally; in ventral view deeply incised on posterior margin, concave anterior margin. Tergite X narrow, with pair of short, symmetrical, horns distally, basally fused with segment IX with pair of setal-bearing lobes laterally; in lateral view apical horn short, tapering distally. Subgenital plate in lateral view narrow with 3-pronged apex, lowermost process elongate and projecting downward, upper process about half-length of lower, bearing elongate seta basally; in ventral view tapering distally with three short apical lobes, pair of subapical lateral wings bearing elongate setae. Bracteoles bifid, dorsal branch twice as long as ventral branch, each bearing short setae apically. Infe- rior appendages thin and tapering distally, extending beyond tergite X; in ventral view elongate and thin, sharply tapering subbasally, sinuate on lateral margins, mesally with narrow, tapering processes bearing stout apical seta. Phallus tubular in lateral view, constricted at mid-length and bearing thin paramere encircling shaft, apex narrowing to thin, upturned hook, ejaculatory duct ending subapically.

Female. Unknown.

Type material. Holotype, male— PANAMA, Chiriquí Province, Cuenca 108, Quebrada Jaramillo, Jaramillo Centro Road bridge, 8.75454°N, 82.41848°W, 1075 m, 14 December 2015, B. and T. Armitage ( COZEM) . Paratypes —ibid., Río Caldera , Boquete , Wilson Bridge, road to Lucero, 8.74228°N, 82.42160°W, 18 November 2015, B. and T. Armitage, 1 male ( COZEM) ; Río Chirigagua , C108, SSE Guayabal, 8.64102°N, 82.55780°W, 737 m, Coll. COZEM, 19 June 2015, 27 males ( COZEM) ; Río Brazo Prieto, C 108, E. Guayabal, 797 m, 8.65683°N, 82.56153°W, Coll. COZEM, 19 June 2015, 2 males ( BJA) ; Primer Brazo del Río David , C108- Ruta 103, Potrerillos Arriba, 8.64414°N, 82.49408°W, 696 m, Coll. COZEM, 21 May 2015, 1 male ( BJA) .

Etymology. Spanish (masculine gender only), “fish hook”, referring to the hook-like phallus apex.

Remarks. Neotrichia anzuelo is a member of the canixa 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 is most similar to N. tauricornis Malicky , which occurs on several Caribbean islands, Colombia, and Panama, in the short, symmetrical “horns” of the tenth tergite, and the 3-pronged apex of the subgenital plate. It differs from N. tauricornis in the structure of the bracteoles, with the dorsal branch longer than the ventral, the elongate inferior appendages, and the configuration of the phallus apex.

Figures

Figure 5. Neotrichia anzuelo, n. sp., male genitalia. A) Lateral view. B) Dorsal view. C) Ventral view. D) Phallus, lateral view.