Hirtodrosophila jukyry, Junges & Robe & Gottschalk, 2019

Junges, João, Robe, Lizandra Jaqueline & Gottschalk, Marco Silva, 2019, Four new Neotropical species in the Hirtodrosophila hirticornis species group (Diptera: Drosophilidae), Zootaxa 4567 (2), pp. 276-292 : 284-287

Hirtodrosophila jukyry sp. nov.

( Figs. 24–33 , 46 )

Type material. Holotype. ♂ (MZSP), labeled “ Brasil, RO. Colorado do Oeste. Haras Poco Sul , 3°6'21.36"S, 60°34'38.06"W, João Junges col. 12.i.2012 / Hirtodrosophila jukyry sp. nov. Junges, Robe, Gottschalk ♂ Holótipo”. Paratypes. 1 ♂ labeled “ Brasil. PA. Melgaço. Flona de Caxiuanã , 01°44'14"S, 51°27′25″W, Stela Machado col. 20.v.2012. Hirtodrosophila jukyry sp. nov. Junges, Robe, Gottschalk ♂ Parátipo”. All specimens had their post-abdomen dissected .

Type locality. Haras Poco Sul , municipality of Colorado do Oeste, state of Rondonia, Brazil (03°06'21.36"S, 60°34'38.06"W) .

Diagnosis. Pleurae without a dark strip below the postpronotum and wing base ( Fig. 24 ). Epandrium with few setulae in a small squared ventral lobe ( Fig. 28 ). Surstylus bearing 6 peg-like prensisetae, without a crescent process above them ( Fig. 30 ). Aedeagus bearing small scales when in lateral and dorsal views ( Figs. 31–33 ). Apex of aedeagus ventrally projected.

Description. ♂. Head ( Figs. 26–27 ). Yellow. Frons and face yellow, fronto-orbital plates indistinct with the same color of the front. Length ratio of mid to anterior orbital setae = 0.30 (0.27–0.33), length ratio of mid to posterior orbital setae = 0.32 (0.27–0.37), vt index = 0.90 (0.80–1.00), ocellar triangle yellowish about 25% (22– 28%) of frontal length. Facial carina not prominent with the same color of the frons. Antennae yellow with flagellomeres slightly grey, aristae with 4–5 dorsal and one ventral branches, plus terminal fork. Palpus yellowish with an apical setae and two or three smaller preapical setae. Red eyes with short piles. Gena yellow, first genal setae about 26% (25–27%) of the vibrissae length. Cheek index = 0.22 (0.21–0.24), eye index = 1.01 (1.00–1.03).

Thorax ( Figs. 24–25 ). Main color yellow. Length = 0.63 (0.53–0.70) mm, width = 0.46 (0.44–0.48) mm, 6 irregular rows of acrostichal, no prescutellar setae. Dc index = 0.50 (0.45–0.55). Scutellum yellowish. Basal scutellar setae convergent. Scut position index = 0.66 (0.63–0.70). Two prominent katepisternal setae and a row of setulae between them. Anterior katepisternal about 37% (32–41%) of the posterior one. Pleurae and legs yellow.

Wings ( Fig. 46 ). Yellow with veins dark yellow. Length = 1.28 (1.14–1.42) mm. Length to width ratio = 0.62 (0.60–0.65). Indices: C = 1.37 (1.32–1.42); 4v = 1.83 (1.73–1.93); 5x = 2.58 (2.50–2.66); 4c = 1.36 (1.33–1.40); M = 0.60 (0.53–0.66); hb = 1.75 (1.60–1.90); prox. x = 0.33 (0.33–0.33).

Abdomen. Main color yellow. Tergites II–V with posterior fainted brown marginal bands not reaching lateral area.

Body length = 1.50 mm.

Terminalia ( Figs. 28–33 ). Epandrium microtrichose, smaller than in Hirtodrosophila rondonia sp. nov., with 6 upper and 10 lower setae, 4 of the latter located on ventral lobe ( Fig. 28 ). Ventral lobe not microtrichose, not covering the surstylus. Cerci not fused with epandrium, microtrichose. Surstylus not microtrichose, with 6 peg-like prensisetae, about 5 inner and no outer setae. Decasternum narrow ( Fig. 30 ). Hypandrium longer than epandrium, without a posterior hypandrial process; gonopod fused to hypandrium, each bearing one seta ( Fig. 29 ). Paraphysis microtrichose, with two small setulae. Aedeagus bearing small scales dorsally and laterally, apical region with a projection easier to recognize in lateral view, when in ventral view the lateral margin presents a serrated aspect. Aedeagal apodeme fused with and longer than aedeagus.

♀. Unknown.

Relationship. The male terminalia of H. jukyry sp. nov. are similar to H. grisea (see Grimaldi 2018), differing by the smaller surstylus, the lower number of inner bristles and the absence of the crescent process. The aedeagus of these species is quite similar too, varying mainly in the shape of the apex in dorsoventral view (rounded in H. grisea ), the absence of the ventral scales in the apical region (as presented by Grimaldi (2018) in Fig. 25B , page 421), and being shorter than the aedeagal apodeme. Despite the great similitude regarding the male terminalia, the body morphology and coloration is very different.

Etymology. The name “ jukyry” means “yellow” in the Tupi-Guarani language and it is an allusion to the body color of the species.

Geographic distribution. Hirtodrosophila jukyry sp. nov. was collected at the same sites as H. nungara sp. nov., at the Floresta Nacional de Caxiuanã, municipality of Melgaço, state of Pará (01°47'32.3"S; 1°26′2.5″W) and at the municipality of Colorado do Oeste, state of Rondônia (13°00'37.7"S; 60°35'24.9"W) ( Fig. 1 ).

Figures

FIGURE 1. Map of the Brazilian biomes, with occurrence records for Hirtodrosophila rondonia sp. nov. (square), H. nungara sp. nov. (stars), H. jukyry sp. nov. (circles) and H. crioula sp. nov. (triangles).

FIGURES 24–27. Hirtodrosophila jukyry sp. nov., holotype, ♂. 24. Habitus, lateral view; 25. Thorax, dorsal view; 26. Head, frontal view; 27. Head, latero-frontal view.

FIGURES 28–33. Hirtodrosophila jukyry sp. nov., male terminalia, holotype. 28. Epandrium, cerci and surstyli, posterior view; 29. Surstyli and decasternum, ventral view; 30. Hypandrium and gonopods, posterior view; 31–33. Aedeagus, aedeagal apodeme and paraphyses, ventral, dorsal and right lateral views, respectively.

FIGURES 44–47. Wings. 44. H. rondonia sp. nov., holotype, ♂; 45. H. nungara sp. nov., holotype, ♂; 46. H. jukyry sp. nov., holotype, ♂; 47. H. crioula sp. nov., holotype, ♂.