Atopsyche (Atopsaura) diamantina Gomes & Calor

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 : 66-68

Atopsyche (Atopsaura) diamantina Gomes & Calor , new species

Figures 3 A–G

Diagnosis. This species belongs to the Atopsyche (Atopsaura) longipennis Group, similar to A. iana Mosely 1949 , A. atahuallpa Schmid 1989 and A. ayacucho Schmid 1989 in the division of each beak of the phallotheca into two projections, but it differs from these species by the very broad and short parapods, the different shape of the projections on the phallothecal “beaks”, and the broader first and second articles of the inferior appendages. The new species can also be recognized by the upcurved process on the apex of each parapod and by the bifid apex of each “beak” of the phallotheca.

Description. Length of each forewing 6.08–6.76 mm (n = 15) long ( Fig. 3 A). Overall body color yellowish brown, slightly darker dorsally. Frons and vertex of head with erect yellow setae. Antennal scapes brown with long brown setae; pedicels yellowish brown, basal flagellomeres yellow, apical flagellomeres brown. Maxillary palp segments 1 and 2 with long, brown, stout setae apically, labial palps with long, brown setae. Dorsum of thorax with long, erect brown and yellow setae. Legs yellowish brown; coxae of all legs and foreleg tibiae darker brown. Forewings light brown, each with erect brown setae between Cu2 and Cu1A; dark brown setae along costal margin and dark brown patch in middle of wing; apex of wing with fringe of dark brown setae. Tergum III anterolaterally with pair of rounded glands. Sterna II–VII with minute setae. Sterna VI–VII each with prominent spine-like ventral process on posteromesal margin; process on sternum VI long, slender, curved, with short spine-like setae along ventral margin and terminating with longer, spine-like seta; process on sternum VII short, straight.

Male genitalia. Segment IX, in lateral view, relatively short longitudinally. Proctiger, in lateral view, broadly widened apically, covered externally with numerous setae. Parapods moderately inflected at middle in dorsal view, apicodorsally each with upcurved hook ( Figs. 3 C–D). Filipods absent. Preanal appendages relatively large for this genus, setose, capitate, each with short and slender “neck” attached to segment IX and “head” almost square in lateral view ( Fig. 3 C). Inferior appendages, in lateral view, each with first article broad, slightly narrower basally and apically, its apicomesal lobe thick, digitate ( Fig. 3 C); second article, in lateral view, thick, wider basally and more slender apically, slightly broader than apicomesal lobe of first article ( Fig. 3 C); in ventral view, broader than first and acute at apex ( Fig. 3 G). Phallic apparatus relatively simple; phallotheca broadly rounded basally with dorsal and ventral posterior projections; as viewed laterally, each “beak” of phallotheca divided apically into upcurved dorsal projection and slender, tiny ventral projection ( Fig. 3 E); in dorsal view, apex of phallotheca divided mesally into pair of “beaks”, each beak concave on mesal surface and with posteroventral margin bearing finger-like sclerotized projection ( Fig. 3 F); aedeagus basally enlarged then spine-like and curving ventrad and caudad.

Female and immatures. unknown.

Holotype male. BRAZIL: Bahia, Mucugê, Chapada Diamantina , Parque Municipal Sempre Viva, Rio Piabinha, 12°59’34”S, 41°20’27”W, el. 921 m, 25.vii.2010, UV Light Pan Trap, Calor, A.R., Lecci, L., Quinteiro, F., França, D., Arantes, T. & Camelier, P. (alcohol; MZSP).

Paratypes. BRAZIL: Bahia, same data as holotype except 2 males (alcohol, UFBA); same data except Rio Cumbuca, 27.vi.2010, UV Light Pan Trap, LEAq team., 1 male (alcohol, UFBA); same data except 12°59’57”S, 41°20’50”W, el. 909 m, 25.vii.2010, light, 1 male (pinned, UFBA); same data except Rio Cumbuca, 27.vi.2010, UV Light Pan Trap, Calor, A.R., Lecci, L., Quinteiro, F., França, D., Arantes, T. & Camelier, P., 1 male (alcohol, UFBA); same data except Andaraí–Igatú, Rio Coisa Boa, 12°53’33.7”S 41°18’58.3”W, el. 664 m, 11.iii.2011, light, Calor, A.R., Camelier, P. & Zanata, A., 1 male (alcohol, UMSP); same data except Rio Coisa Boa, 12°53’13.9”S, 41°18’58.3”W, 12.v.2010, UV Light Pan Trap, França, D., 1 male (alcohol; UFBA); same data except Palmeiras, Vale do Capão, Rio Carinho (ponte), 29.vi.2011, Calor, A.R., Camelier, P. & Burguer, R., 3 males (alcohol, UFBA); same data except Palmeiras, Vale do Capão, Riachinho (ponte), 12°34’19.2”S 41°30’52.5”W, el. 918 m, 25.vi.2011, UV Light Pan Trap, Calor, A.R., Camelier, P. & Burguer, R., 15 males (alcohol, UFBA); same data except 8 males (alcohol, UMSP); same data except Lençóis, Rio Mucugezinho, 12°27’44”S, 41°25’1”W, el. 706 m, 01.viii.2010, UV Light Pan Trap, Calor, A.R., Lecci, L., Quinteiro, F., França, D., Arantes, T. & Camelier, P., 4 males (alcohol, UFBA); same data except Piatã, Fazenda Machado, riacho Machado, cachoeira Caxiban, 13°09’33”S, 41°47’29”W, 30.vii.2010, Calor, A.R., Lecci, L., Quinteiro, F., França, D., Arantes, T. & Camelier, P., 1 male (pinned, UFBA); same data except Riacho Três Morros, cachoeira Patricio, 13°05’12”S, 41°51’12”W, el. 909 m, 29.vii.2010, entomological net, 2 males (pinned, UFBA); same data except light, 1 male (pinned, UFBA); Minas Gerais, Delfinópolis, 03.i.2007, Amorim, D. & Ribeiro, G., 1 male (alcohol, UFBA).

Distribution. Brazil (Bahia, Minas Gerais).

Etymology. The specific name, a noun in apposition, refers to the Chapada Diamantina , a mountain range in the central region of the State of Bahia, Brazil, which is the type locality of the new species. The word “ Diamantina ” in Portuguse means “diamantiferous,” and it is an allusion to the large diamond reservoirs in the region.

Figures

FIGURE 3. Atopsyche (Atopsaura) diamantina Gomes & Calor, new species, male. 3 A, right forewing, dorsal; 3 B, right hind wing, dorsal; 3 C, genitalia, left lateral, phallic apparatus omitted; 3 D, left parapod and preanal appendage, dorsal; 3 E, phallic apparatus, left lateral; 3 F, phallic apparatus, dorsal; 3 G, left inferior appendage, ventral.