Trichomyia xaniostylis Quate, 1996

Araújo, Maíra Xavier & Bravo, Freddy, 2024, A contribution to the knowledge of Trichomyia Haliday in Curtis, 1839 (Diptera, Psychodidae): supplementary characters of five Quate’s species, Papéis Avulsos de Zoologia 64, pp. 1-8 : 7

Trichomyia xaniostylis Quate, 1996

( Figs. 5 A-I)

Trichomyia xaniostylis Quate, 1996: 9-10 , figs. 2h-m.

Material examined: 2 paratypes ♂ ( USNM, CAS) Costa Rica, Limon, Puerto Viejo de Talaman , 20.VII.1993, L.W. Quate, leg. ; 4 ♂ ( MZFS) Brazil, Roraima, km 4, S.J. Baliza, 30.IV.2005, without name of collector ; 1 ♂ ( MZFS) Brazil, Amazonas, Purupuru, Est. Nunes de Melo , km 4, 24.XI.1998, without name of collector ; 2 ♂ ( MZFS) Brazil, Roraima, km 3, Sl. Do Anaua , 24.X.2003, M. Rocha leg. ; 1 ♂ ( MZFS) Brazil, Pará, Novo Repartimento, Vic. Bandeirante, Sítio Pedro Roqueta , 19.VIII.1998, without name of collector ; 1 ♂ ( MZFS) Brazil, Roraima, km 4, São Luiz do Anauá, Faz. Zulmira , 04.II.2004, M. Rocha leg ; new record: 3 ♂ ( MZFS) Brazil, Rondônia, Caucalândia , 200 km SSE de Porto Velho, 10°18.00′S, 61°52.01′O, 25.V-06.VI.1998, L.W. Quate leg.

Distribution: Costa Rica and Brazil, states of Roraima, Amazonas, Pará and Rondônia (new record).

Diagnosis: Palpus with three segments; Sc sclerotinized without microtrichia, r-m present, and R4+5 complete at the base. Male terminalia with a rectangular arm of gonocoxite with modified setae, and a short, triangular gonostylus. The aedeagus is bifurcated, with strongly sclerotinized parameres, and a short ejaculatory apodeme.

Supplementary description: Male: Head oval in frontal view, rounded eyes. Supraocular bristles in a single row. Antennal socket subtriangular, with a short distance between them, less than ⅓ the length of the antennal sock- et. Occipital bristles in a row restricted to the posterior margin of the eye. Scape subcylindrical and subspherical pedicel, flagellomeres piriform, with a pair of mediobasal ascoids, first flagellomere of the same length as the second flagellomere ( Fig. 5A ). Ascoids with variations, filiform and parallel to flagellomeres, with the same size of the flagellomeres in one of the paratypes, or digitiform and slightly S-shaped, with 1.6 times the length of the flagellomeres in the other specimens. ( Figs. 5A, 5B ). Antenna with 13 flagellomeres, flagellomere 13 more globous than the others and with a terminal apiculus separated by a suture. Apiculus subcircular with two setae in the apex ( Fig. 5D ). Palpus with three segments, first segment with sensilla grouped in a pit, palpus formula 1.0:0.5:0.7 ( Fig. 5C ). Wing. Sc sclerotinized without microtrichia, r-m present, radial fork closer to the apex than the apex of the CuA₂ and the medial fork at the same height as the apex of the CuA₂; R₄ ₊ ₅ complete at the base ( Fig. 5E ) (Fig. 46.2). Male terminalia: hypandrium fused with gonocoxites. Arm of gonocoxite rectangular, longer than wide, with modified rod-shaped setae in a row at the apex and small spinous bristles randomly distributed in the dorsal region, directed for the apical region, at an angle of 90°. Gonostylus short, triangular in lateral view, little sclerotinized, without bristles and articulated basally in the ventral region of the gonocoxite ( Figs. 5H, 5I ). Aedeagus bifurcated, a pair of bifurcated and strongly sclerotinized parameters, ejaculatory apodeme short, 0.5 times the length of parameres ( Fig.5F ). Cercus piriform in ventral view with four modified spiniform bristles at the apex and thinner bristles randomly distributed throughout its length ( Figs. 5H, 5G ). Hypoproct acuminated with micropilosity. Epandrium quadrangular and pilose, with alveoli concentrated in the apex of the two lateral ( Fig. 5G ).

AUTHORS’ CONTRIBUTIONS:MXA:Methodology,Writing – original draft; FB:Writing – review & editing. All authors actively participated in the dis-

Figures

Figures 5. Trichomyia xaniostylis Quate, 1996. (A) Scape,pedicel and first flagellomeres; (B) Flagellomeres with long ascoid; (C) Palpus;(D) Last flagellomere and apiculus;(E)Right wing; (F) Aedeagus and parameres;(G) Cercus,epandrium and hypoproct;(H) Male genitalia,lateral view;(I) Male genitalia,dorsal view.