Atopsyche (Atopsaura) usingeri Denning 1968

Gomes, Victor & Calor, Adolfo Ricardo, 2016, Taxonomy of Atopsyche Banks (Trichoptera: Hydrobiosidae) from Brazil: New species, distributional notes and identification key, Zootaxa 4139 (1), pp. 51-75 : 64

Atopsyche (Atopsaura) usingeri Denning 1968

Atopsyche usingeri Denning 1968 , in Denning & Sykora 1968, 172 (Type locality: Brazil, Rio de Janeiro, Teresópolis, Organ Mountains, 30.viii.1957, Usinger, R.; holotype depository: CAS).

Atopsyche (Atopsaura) usingeri Denning ; Paprocki et al. 2004, 7 (checklist, species credited to Denning & Sykora); Calor 2011, 320 (checklist, species credited to Denning & Sykora).

Diagnosis. This species belongs in the Atopsyche (Atopsaura) longipennis Group. It resembles A. serica and A. huanapu in the short parapods which in lateral view are parallel-sided, each with its apex truncate and its apicodorsal angle subacute and upturned. It differs from A. serica in that the filipods of A. usingeri are much longer than the parapods, slender, slightly enlarged in their apical portion. Atopsyche usingeri differs from both of these species by lacking a transverse sclerite above the phallotheca ( Schmid 1989), in the different horseshoe-shaped or hood-like structure of A. serica ( Ross 1953) , and in the dorsal process on the phallotheca.

Description. Overall body color light to dark brown (alcohol). Head with light and dark brown and whitish setae. Antennal scapes brown with brown setae, pedicels and basal flagellomeres light brown, apical flagellomeres brown. Maxillary and labial palps light brown with elongate dark brown setae. Dorsum of thorax with dark and light brown setae. Forelegs and hind legs dark brown, midleg light brown. Forewings light brown, covered with small light and dark brown setae (in alcohol). Terga II to VIII with dorsal and lateral long brown setae.

Remarks. Some individuals have the apex of the first article of each inferior appendage slightly broader than the basal portion, differring from the illustration and description of Denning & Sykora (1968), and the second article is sometimes downcurved.

Material examined. BRAZIL: São Paulo, E.B. Paranapiacaba, 17.ix.1963; Det. Flint, O.S. Jr., 1977, 2 males (alcohol, MZSP); same data except 27.viii.1963, light; Det. Flint, O.S. Jr., 1977, 1 male (alcohol, MZSP); same data except 27.xi.1963, light; Det. Flint, O.S. Jr., 1977, 1 male (alcohol, MZSP); same data except 05.vii.1963, light; Det. Flint, O.S. Jr., 1977, 1 male (alcohol, MZSP).

Distribution. Brazil (Rio de Janeiro, São Paulo).