Atopsyche (Atopsyche) parauna, Santos, Allan P. M. & Holzenthal, Ralph W., 2012

Santos, Allan P. M. & Holzenthal, Ralph W., 2012, Three new species of Atopsyche Banks (Trichoptera, Hydrobiosidae) from Brazil, ZooKeys 207, pp. 65-78 : 68-70

Atopsyche (Atopsyche) parauna sp. n. Figs 2, 5, 8

Diagnosis.

This new species is most similar to Atopsyche jaba Blahnik and Gottschalk, described from Costa Rica. These two species share a similar mesal process on the first article of the inferior appendage and the complex phallotheca, with paired processes posteriorly. Atopsyche parauna sp. n. can be distinguished from Atopsyche jaba and other Atopsyche species by the broad parapod, in lateral view, with the dorsolateral margin serrate and with a midlateral spinose projection, whereas in Atopsyche jaba , the parapod has 2 prominent spines. In addition, the second article of the inferior appendage is shorter and slightly hooked in the new species, and the phallotheca is posteriorly divided into 2 long, paired processes, the dorsal one birfucate apically and the ventral one curved mesally.

Male.

Forewing length 5.0-5.5 mm (n=10). Overall body color brown; antennal scape brown, with long stramineous setae, pedicel brown, basal flagellomeres yellow, apical flagellomeres brown; setae of palps yellow; frons and vertex of head with long, erect brown and whitish setae; legs yellowish brown, coxae of all legs darker brown. Forewings brown; erect setae on veins forming distinct mottled pattern of alternate dark brown and yellow setae, with dark brown setae along costal margin; apex of wing with fringe of alternating patches of dark brown and yellow setae. Forewing venation complete (Fig. 5A); R1 branched; stem of fork I equal to its length; fork II long, sessile; stem of fork III equal to its length; fork IV long, sessile; stem of M slightly curved between m-cu crossvein and first fork of M; fork V long, narrow; Cu2 long, converging near fused anal veins, crossvein near apex forming small cell on posterior margin of wing; apex of fused anal veins very short. Hind wing (Fig. 5B) with Sc and R1 fused apically; forks I, III, and V present, the first with a short stem, the last long with a short stem, stem of fork III longer than its length; forks II and IV absent; M3+4 reaching wing margin; Cu2 long and almost straight; 1A long and strongly curved, with row of elongate setae along its length. Nygmas indistinct in both wings. Terga III and IV with pair of prominent rounded glands at anterolateral margin, lined internally with minute setae (Fig. 8A). Sternum V with pair of small rounded glands on anterolateral margins, with a keel-like projection (Fig. 8B). Sterna VI and VII with prominent spine-like ventral processes on posteromesal margins.

Male genitalia.

Segment IX, in lateral view, short (Fig. 2A). Parapod broad, with dorsolateral margin serrate, setose, and with small, midlateral spinose projection (Figs 2A, 2B). Filipod long, slender, with elongate setae along length, apex somewhat capitate (Fig. 2A). Preanal appendage short, rounded, setose (Figs 2A, 2B). Inferior appendage, first article long, slightly constricted mesally, otherwise relatively narrow and of uniform width, without apical process, but mesally with small process at midlength, bearing short spines (Figs 2A, 2C); second article small, slightly hooked apically (Figs 2A, 2C). Proctiger, in lateral view, broadly widened apically, with angulate apical mar gin, covered with minute setae, apicodorsal margin with long setae (Fig. 2A). Phallic apparatus complex (Figs 2D, 2E); phallotheca broadly rounded basally, with short rounded ventral process articulating with inferior appendages (Fig. 2D); posteriorly divided into two long, paired processes, dorsal one longer and bifurcate apically, ventral one curved mesally (Figs 2D, 2E); aedeagus an elongate, stout, spine-like structure, with ventral curvature near base (Fig. 2D).

Holotype male.

BRAZIL: Minas Gerais: Rio Paraúna, 3 km S Santana do Riacho, 19°10.986'S, 43°43.485'W, 650 m, 11.xi.2001, Holzenthal, Paprocki, Blahnik & Amarante (pinned) (UMSP000080716) (MZSP).

Paratypes.

BRAZIL: Minas Gerais: same data as holotype, 2 males, 3 females (pinned) (UMSP); Cardeal Mota, Cachoeira Véu da Noiva, 19°18.912'S, 43°36.260'W, 800 m, 12.xi.2001, Holzenthal, Paprocki, Blahnik & Amarante, 2 males (pinned) (DZRJ); Rio Cipó, Cachoeira de Baixo, 19°20.553'S, 43°38.531'W, 750 m, 10.xi.2001, Holzenthal, Paprocki, Blahnik & Amarante, 3 males (pinned) (2 males, NMNH; 1 male, UMSP).

Etymology.

This species is named after the river where the holotype was collected, that means "black river" in the Tupi-guarani language.