Culoptila hamata, 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 : 26-27

Culoptila hamata , new species

Figs. 9 A, B, 4, 22A, B, 23A, B

This species is probably most closely related to Culoptila tapanti , n. sp. Both species are similar in having an elongate curved tergum X, a phallobase that is relatively parallelsided, with an elongate, acute posterodorsal apex, and also in the possession of a single phallic spine, which is somewhat inflated mesally and tapers to a very fine needle­like apex. Culoptila hamata differs most notably C. tapanti in the form of the apex of tergum X (narrowed and acute in C. hamata and deeply emarginate in C. tapanti ).

Adult. Length of forewing: male 2.2–3.2 mm; female 2.4–3.2 mm. Color brown; forewing with small whitish mark at arculus on wing margin. Mesothorax of male slightly narrowed anteromesally; mesoscutal wart short, heart­shaped. Mesothoracic tegulae of male rounded, 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, subacute apically. Tergum X very elongate, narrow, strongly curved, apex in ventral view acute; 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 very elongate, straight, apex acute. Phallic apparatus with 1 phallic spine, narrow and needle­like, about 1/2 length of phallobase, with rather abrupt, bulbous expansion in basal half.

Material examined

Holotype male: COSTA RICA: Alajuela: Río Toro, 3.0 km (road) SW Bajos del Toro, 10°12’14"N, 084°18’58"W, 1530 m, 3–4.ix.1990 (Holzenthal, Blahnik, & Huisman) ( UMSP 000000386) ( UMSP).

Paratypes: COSTA RICA: Alajuela: same data as holotype — 1 male ( UMSP); Río Sarapiquí, ca. 2 km SE Cariblanco, 10°17’56"N, 082°10’19"W, 710 m, 22.vi.1986 (Holzenthal, Heyn, & Armitage) — 15 males ( UMSP); Reserva Forestal San Ramón, Río San Lorencito & tribs., 10°12’58"N, 084°36’25"W, 980 m, 30.iii.–1.iv.1987 (Holzenthal, Hamilton, & Heyn) — 951 males, 1044 females ( UMSP, INBIO); same, 13–16.vi.1988 (C. & O. Flint, Holzenthal) — 92 males, 59 females ( NMNH); same, 1–4.v.1990 (Holzenthal & Blahnik) — 176 males, 138 females ( UMSP); same, 28–30.viii.1990 (Holzenthal, Blahnik, & Muñoz) — 6 male ( UMSP); same, 6–10.iii.1991 (Holzenthal, Muñoz, Huisman) — 59 males, 51 females ( UMSP); Quebrada Latas, 8.9 km NE Bajos del Toro, 10°16’08"N, 084°15’36"W, 1030 m, 6.ix.1990 (Holzenthal, Blahnik, & Huisman) — 3 males, 3 females ( UMSP); Reserva Bosque Nubosa Monte Verde, Río Peñas Blancas, 10°18’00"N, 084°44’24"W, 950 m, 1.iii.1986 (Holzenthal & Fasth) — 4 males, 15 females ( UMSP); Guanacaste: Parque Nacional Guanacaste, Río Tempisquito, Maritza, 10°57’29"N, 085°29’49"W, 550 m, 30–31.viii.1990 (Huisman, Blahnik, & Quesada) — 60 males, 37 females ( UMSP); same, 13–16.vii.1992 (F. Munoz) — 2 males ( INBIO); Río Tempisquito Sur, Maritza, 10°57’00"N, 085°28’48"W, 600 m, 30.viii.1990 (Huisman & Quesada) — 172 males, 34 females ( UMSP); ca. 0.7 km N Est. Maritza, 10°57’36"N, 085°30’00"E, 550m, 31.viii.1990 (Huisman & Quesada) — 16 males, 3 females ( UMSP).

Etymology

This species is named hamata , from the Latin hamus, meaning hooked, in reference to the elongate, curved, or hooked apex of tergum X of this species.

Figures

FIGURE 9. Culoptila hamata, new species, wings. 9 A—forewing; 9 B—hind wing.