Culoptila unispina, Blahnik, Roger J. & Holzenthal, Ralph W., 2006

Blahnik, Roger J. & Holzenthal, Ralph W., 2006, Revision of the genus Culoptila (Trichoptera: Glossosomatidae), Zootaxa 1233, pp. 1-52 : 44

Culoptila unispina , new species

Figs. 3 , 36 A, B

This species is probably most closely related to Culoptila hamata and C. tapanti , agreeing in the shape of the phallobase (elongate and parallel­sided), and in the possession of a single phallic spine. It differs from either of those species in that the phallic spine is not inflated mesally and additionally in that tergum X is acute and only moderately elongate, as opposed to very elongate in the other 2 species (acute in C. hamata , deeply incised in C. tapanti ). Culoptila unispina also bears a general similarity to C. costaricensis , which differs, however, in having 2 phallic spines, a shorter tergum X and also shorter inferior appendages.

Adult. Length of forewing: male 2.9–3.2 mm; female 3.2–4 mm. Color dark brown; forewing with small whitish mark at arculus on wing margin. Mesothorax of male not noticeably modified; mesoscutal wart short, heart­shaped; mesoscutal setae short. Mesothoracic tegulae of male flattened and weakly cupped, distinctly enlarged; tegular setae short; tegular gland short, pleated, concertina­like.

Male genitalia. Sternum VI process short, subtruncate. Tergum IX ventral margin subtruncately rounded, slightly produced posteroventrally. Inferior appendages moderately long, acute apically. Tergum X long, length greater than width, apex in ventral view narrowed, subacute; ventrolateral processes with apices incurved and posteriorly bent, bluntly rounded and distinctly sclerotized. Phallobase elongate, dorsal and ventral margins subparallel in lateral view, apicodorsal projection elongate, straight, apex subacute. Phallic apparatus with 1 phallic spine, elongate, more than 1/2 length of phallobase, narrow, weakly sinuously curved.

Material examined

Holotype male: COSTA RICA: Puntarenas: Río Bellavista, ca. 1.5 km NW Las Alturas, 08°57’04"N, 082°50’46"W, 1400 m, 10–11.viii.1990 (Holzenthal, Blahnik, & Muñoz) ( UMSP 000000497) ( UMSP).

Paratypes: COSTA RICA: Puntarenas: same data as holotype, 1 female ( UMSP); same, except 8–9.iv.1987 (Holzenthal, Hamilton, & Heyn) — 3 males ( UMSP); Río Cotón, in Las Alturas, 08°56’17"N, 082°49’34"W, 1360 m, 16.ii.1986 (Holzenthal, Morse, & Fasth) — 2 males ( UMSP); Zona Protectora Las Tablas, Río Cotón, Sitio Cotón, 08°56’28"N, 082°47’13"W, 1460 m, 15.iv.1989 (Holzenthal & Blahnik) — 5 males, 3 females ( UMSP); San José: Río Chirripó Pacífico, 9.5 km NE Rivas, 09°28’12"N, 083°35’28"W, 1370 m, 23.ii.1986 (Holzenthal, Morse, & Fasth) — 1 male ( UMSP). PANAMA: Chiriquí: Boquete, brook at Hotel Fundadores, 1200 m, 29.v.1983 (Spangler, Faitoute, & Steiner) — 4 males; 52 females ( NMNH).

Figures

FIGURES 2 – 3. Larval cases. 2 — Culoptila moselyi Denning, Arizona, U. S. A. 3 — Culoptila unispina, new species, Río Cotón, Puntarenas Province, Costa Rica.

FIGURES 35 – 37. Male genitalia. 35. Culoptila thoracica (Ross): 35 A—lateral; 35 B—ventral. 36. Culoptila unispina, new species: 36 A—lateral; 36 B—ventral. 37. Culoptila vexillifera, new species: 37 A—lateral; 37 B—ventral.