Mycodrosophila (Mycodrosophila) martinsae, Corrêa & Gottschalk & Carvalho-Filho & Mendes & Valente, 2021

Corrêa, Robson Crepes, Gottschalk, Marco Silva, Carvalho-Filho, Fernando Da Silva, Mendes, Mayara Ferreira & Valente, Vera Lúcia Da Silva, 2021, Two new species and a new species group of Mycodrosophila Oldenberg, 1914 (Diptera: Drosophilidae) from the Amazon, Zootaxa 5052 (1), pp. 78-90 : 84-85

Mycodrosophila (Mycodrosophila) martinsae n. sp.

( Figs 23–36 )

Type material. Holotype ♂, code 07- MYCOPA, labeled as follows: “Belém, PA [= state of Pará], Brasil, Parq. Utinga [ Parque Estadual do Utinga ], Tronco Podre [= rotting fallen log], 27.IX.2016, F.S. Carvalho Filho [collector]”, 1°25’19.4”S, 48°26’25.4”W ( MPEG) . Holotype condition: midlegs missing, left wing removed and mounted between coverslips attached to the specimen, abdomen dissected, terminalia sclerites stored in a microtube with glycerin attached to the specimen.

Etymology. The specific epithet “ martinsae ” pays homage to Dra. Marlúcia Bonifácio Martins, a Brazilian researcher at the Museu Paraense Emílio Goeldi (MPEG), who has contributed to the development of science and to knowledge of the ecology and taxonomy of Drosophilidae and the Amazonian fauna.

Diagnosis. Combination of the following characteristics: gena with a silvery shine similar to that of frons; palps light brown; a pair of posterior dorsocentral setae; scutellum opaque; abdomen with TV dark brown, with a pair of shine transverse light bands; TVI light and shine; epandrium with 4 upper and 4 lateral setae; ventral lobe slightly longer than the surstylus, microtrichose and with 5 long setae; surstylus connected to epandrium, with 10 prensisetae arranged in line, 2 inner and 4–5 outer setae; phallus tubular and projected anteriorly, 2x narrower in basiphallus than in distiphallus and the narrowed section about 1/3 of the phallus length in lateral view.

Description. Holotype ♂ (Code 07-MYCOPA, Figs 23–36 ). Head ( Figs 23–26 ). Dark brown; eyes reddish and glabrous; facial carina light brown, prominent; scape and pedicel light brown; flagellomere 1 brown; arista with four dorsal and one ventral branches, and terminal fork; orbital plates dark brown, lighter after orbital bristle 3 (or3); orbital setae dark brown; distance between or1 and or2 = 0.03 mm, between or1 and or3 = 0.06 mm, and between or2 and or3 = 0.03 mm; frons light brown, reflecting silvery shine throughout; ocellar triangle dark brown, approximately 1/3 as long as the frons; occiput light brown; face light brown; gena light (with silvery brilliance similar to that on frons); proboscis and labellum light; palps light brown; postocellar setae dark brown, long and crossed. Thorax ( Figs 23, 25 and 26 ). Dark brown; scutum shiny dark brown, with 8 regular rows of acrostichal setulae; pleura pale yellow, with a dark brown region in the dorsal portion of the proepisternum, anepisternum and anepimeron forming a confluent band with the notum coloration above the wing insertion; a pair of posterior dorsocentral setae; scutellum opaque with converging basal and distal scutellar setae; legs uniformly pale yellow. Wings ( Figs 23, 29 and 30 ). Hyaline, stained in the second C break and extending to the vein M; costal lappet dilated and dark; vein R 2+3 straight towards C; veins R 4+5 and M slightly converging near the apex of the wing; bmcu absent; halter light on the connecting stem, knob damaged; index: C = 1.22, ac = 4.35, hb = 0.60, 4c = 1.90, 4v = 2.65, 5x = 2.6, M = 0.81, prox. x = 0.59. Length 1.60 mm, width 0.72 mm. Abdomen ( Figs 23, 27 and 28 ). Dark brown; TI light; TII dark brown, with slight dorsal median indentation and light trapezoidal spot on lateral portion; TIII–V dark brown with a thin light marginal spot; TIV and V with a light, right-angled triangular spot on the side, TV with a pair of dorsal shine light spots; TVI light and shine; sternites and intersegmental membranes light. Body length: 2.09 mm.

Male terminalia ( Figs 31–36 ). Epandrium with equal width and length, microtricose, with 4 upper and 4 lateral setae (Epan, Figs 31 and 32 ); ventral lobe slightly longer than the surstylus, tapering apically, microtrichose and with 5 long setae (V.L.Epan, Figs 31 and 32 ). Cerci free (not fused to epandrium), microtrichose, with large setae (Cer, Figs 31 and 32 ). Subepandrial sclerite wide, connected to the surstyli (S.S., Fig. 31 ). Surstylus connected to epandrium, with 10 prensisetae arranged in line, 2 inner and 4–5 outer setae (Sur, Figs 31 and 32 ). Hypandrium arcshaped, as wide as long, being almost the same length as the epandrium (Hypan, Figs 33 and 36 ). Pregonites large, sub-rectangular, partially fused to the hypandrium and bearing a seta (Preg, Figs 33, 34 and 36 ). Phallus tubular, projected anteriorly, with basiphallus 2x narrower than distiphallus (sense Grimaldi 1987), the narrowed section about 1/3 of the phallus length in lateral view; the apical region forked and indented, with rows of tiny setulae on the inner margin (Phallus, Figs 33–35 ). Phallapodeme laterally flattened and shorter than phallus (Phallap, Figs 34 and 35 ). Ventral rod (sense Bächli et al. 2004) anteriorly projected and merged with the posteromedial margin of the hypandrium ( Figs 33 and 36 ). Postgonites (connected to the pregonites) elongated and curved anteriorly in lateral view, bearing approximately three apical setulae, and microtrichose on the inner surface (Post and Preg, Figs 33, 34 and 36 ).

Female: unknown.

Figures

FIGURES 23–30. Holotype (♂07-MYCOPA) of Mycodrosophila martinsae n. sp. 23, Habitus (lateral view); 24, head (frontolateral view); 25, head and thorax, (lateral view); 26, ditto (dorsal view); 27, abdomen (dorsal view); 28, ditto (lateral view); 29–30, wing (red arrows indicating costal breaks).Abbreviations: or1, orbital seta 1; or3, orbital seta 3; i vt s, inner vertical seta; o vt s, outer vertical seta; vb, vibrissa; p dc s, posterior dorsocentral seta; ap sctl s, apical scutellar seta; b sctl s, basal scutellar seta; ktp s, katepisternal seta; TII, tergite 2; TIII, tergite 3; TIV, tergite 4; TV, tergite 5; TVI; tergite 6.

FIGURES 31–36. Holotype (♂07-MYCOPA) of Mycodrosophila martinsae n. sp. Male terminalia: 31, epandrium, surstyli and cerci (posterior view); 32, ditto (postero-lateral view); 33, phallus, hypandrium, pregonites and postgonites (ventral view); 34, pregonite, postgonite, ventral rod, phallus and phallapodeme (lateral view); 35, phallus, ventral rod and phallapodeme (lateral view); 36, pregonites, postgonites, hypandrium and ventral rod insertion scar (ventral view). Abbreviations: Cer, cerci; Epan, epandrium; Sur, surstylus; V.L.Epan, ventral lobe of epandrium; S.S, subepandrial sclerite; Hypan, hypandrium; Preg, pregonite; Post, postgonite; V.R., ventral rod; Phallap, phallapodeme; V.R.I.S., ventral rod insertion scar.