Atrichobrunettia(Polibrunettia)longipalpis, Araújo & Bravo, 2021

Araújo, Maíra Xavier & Bravo, Freddy, 2021, Contribution to the knowledge of Atrichobrunettia Satchel, 1953 (Diptera, Psychodidae) from Brazil, Papéis Avulsos de Zoologia (Pap. Avulsos Zool., S. Paulo) 61, pp. 1-5 : 1-4

Atrichobrunettia(Polibrunettia)longipalpis sp. nov. ( Figs. 1 A-H)

Diagnosis: Palpus long (palpus formula = 1.0: 5.2: 4.4: 5.2); medial fork basal to radial fork; hypandrium wide with dentate distal margin; parameres subtriangular with pointed and divergent apex.

Male description: Head ( Fig. 1A ): vertex rounded with setae alveoli regularly spaced and little separated medially; eye-bridge narrow, composed of three rows of facets and separated by approximately four facet diameters; interocular suture complete, inverted U-shaped; frontal scar patch of alveoli divided medially; clypeus scar patch of alveoli subquadrangular, undivided. Antenna with scape cylindrical, 1.4 times the length of pedicel; pedicel spherical; flagellum with 14 nodiform flagellomeres, decreasing in size from base to apex, 2-10 strongly eccentric flagel- lomeres; 14 th flagellomere with small apiculus ( Fig. 1B ); a pair of S-shaped ascoids in the flagellomeres 1-13 ( Fig. 1C ); Palpus formula 1.0: 5.2: 4.4: 5.2. Mouthparts extending beyond basal segment of palpus; labellum with apicolateral bristles ( Fig. 1A ). Wing with pointed apex; Sc short and not sclerotized; Rs pectinate, radial fork apical to medial fork; R₅ ending at the wing tip; CuA₂ ending apical to the level of medial fork ( Fig. 1D ).

Male Terminalia: Cercus cylindrical longer than the length of epandrium; internal surface of cercus with two short bristles; apex with at least 20 long tenacula with rounded tips ( Figs. 1E, F, H ). Epandrium bare, subrectangular, wider than long, proximal margin concave in ventral view and with two foramina near proximal margin ( Fig. 1F ). Gonocoxite bare, cylindrical, the same length as gonostylus; gonocoxal apodemes fused, forming a bridge and in contact with proximal portion of ejaculatory apodeme; ejaculatory apodeme narrow and short. Gonostylus tapered and curved with three bristles at apex, distal one longer than other two. Hypandrium wide, with irregular, dentate and little sclerotized area in the distal margin. Aedeagus with bilobed apex; parameres subtriangular, pointed at apex, sclerotized and divergent, with the same length as gonostylus ( Figs. 1G, H ).

Female: Unknown.

Material examined

Holotype: BRAZIL, 1 male; Bahia, Serra da Jibóia, Sede Gambá , 10.v.2017, Silva-Neto, Mendes and Moura leg.; light trap; MZFS.

Paratypes: BRAZIL: Southeast region : 6 males ; São Paulo, Sete Barras , 25.vii-07.viii.2004, without name of collector ; Malaise trap; MZFS; 4 males ; São Paulo, Sete Barras , 13-27.xi.2004, without name of collector ; Malaise trap; MZFS, 3 males ; São Paulo, Sete Barras , 24.xii.2004 - 08.i.2005, without name of collector ; Malaise trap; MZFS, 1 male ; São Paulo, Sete Barras , 16-30.x.2004, without name of collector ;Malaise trap; MZFS. Northeast region : 1 male ; Bahia, Serra da Jibóia, Sede Gambá , 10.v.2017, Silva-Neto, Mendes and Moura leg. ; light trap; MZFS.

Distribution: Brazil (states of Bahia and São Paulo).

Etymology: The name longipalpis refers to the length of the elongated palpus.

Comments: Based on the key to males of Neotropical species of Atrichobrunettia of Bravo (2006), the new species is included in the subgenus Polibrunettia by following characters: eye bridge separated, narrow; scape 1.0x-2.0x the length of the pedicel; R₅ ending at the apex of the wing; apodemes fused forming a gonocoxal bridge; post-hypandrial wide and plate without alveoli; and subtriangular parameres. In addition, the new species is morphologically similar to A. longipenis Bravo, 2006 by the length of palpus, little longer in the new species, but differs because the ejaculatory apodeme is wider in A. longipenis ; the distal margin of hypandrium dentate in the new species and straight in A. longipenis and by the direction of the parameres, more divergent in A. longipenis . The current distribution of the new species included the southeast and northeast of Brazil in the Atlantic Rain Forest of states of São Paulo and Bahia.

Figures

Figures 1. (A-H) Atrichobrunettia longipalpis Araújo & Bravo,sp. nov. (A) Head. (B) Last four flagellomeres.(C) First flagellomere with ascoid.(D)Wing. (E) Cercus, dorsal view. (F) Epandrium and cerci,ventral view.(G) Hypandrium, gonocoxites, gonostyli,parameres,aedeagus and ejaculatory apodeme,dorsal view. (H) Male terminalia,lateral view:Epandrium,cerci,hypandrium,gonocoxites,gonostyli,parameres,aedeagus and ejaculatory apodeme.