Culoptila acaena Bueno­Soria & Santiago­Fragoso

Blahnik, Roger J. & Holzenthal, Ralph W., 2006, Revision of the genus Culoptila (Trichoptera: Glossosomatidae), Zootaxa 1233, pp. 1-52 : 11

Culoptila acaena Bueno­Soria & Santiago­Fragoso

Fig. 10 A, B

Culoptila acaena Bueno­Soria & Santiago­Fragoso 1996: 448 .

This is a distinct species, most easily diagnosed by its unusual, short, rounded phallobase and the structure of the phallic spine, which is short and bears numerous accessory spinelike projections. In the latter character, it may show some relationship to Culoptila kimminsi Denning 1965 and C. buenoi , n. sp. Additional characters useful in identifying the species are the shape of the inferior appendages, which are more arched and laterally displaced than most species of Culoptila , and also the relatively short tergum X, which is either slightly incised or nearly acute apically.

Adult. Length of forewing: male 3.3 mm. Color yellowish­brown in alcohol, appendages paler. Mesothorax of male not noticeably modified; mesoscutal wart prominent, subtriangular, wide at anterior margin. Mesothoracic tegulae of male rounded, slightly enlarged; tegular gland very short, with several concertina­like folds.

Male genitalia. Sternum VI process short, rounded. Tergum IX ventral margin broadly rounded, not produced posteroventrally. Inferior appendages moderately long, narrow apically, divergent basally, curving mesad apically. Tergum X short, about as long as wide, apex in ventral view variable, subacute or weakly incised mesally; ventrolateral processes with apices incurved, nearly planar in caudal view, mesal margin acute; apices not or scarcely posteriorly bent. Phallobase short, rounded in lateral view, apicodorsal projection short, with very distinct inflection at base, apex rounded. Phallic apparatus with only 1 apparent phallic spine, spine relatively short and divided into a number of accessory spines of varying lengths.

Material examined

MEXICO: Guerrero: NW Zihuatanejo, km 80, Ruta 130, 1200 m, 7.vi.1984 (Bueno & Barrera) — male holotype, 2 male paratypes, 1 male ( UNAM).

Distribution

MEXICO (Guerrero).

Figures

FIGURES 10 – 12. Male genitalia. 10. Culoptila acaena Bueno­Soria & Santiago­Fragoso: 10 Alateral; 10 B—ventral. 11. Culoptila aluca Mosely: 11 A—lateral; 11 B—ventral. 12. Culoptila amberia Mosely—lateral.