Hirtodrosophila rondonia, 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 : 278-281

Hirtodrosophila rondonia sp. nov.

(Figs 3–13, 44)

Type material. Holotype . ♂ (MZSP), labeled “ Brasil, RO. Colorado do Oeste. Haras Poco Sul , 03°06'21.36"S, 60°34'38.06"W, João Junges col. 12.i.2012 / Hirtodrosophila rondonia sp. nov. Junges, Robe, Gottschalk ♂ Holótipo”. Paratypes. 2 ♂ labeled “ Brasil, RO. Colorado do Oeste. Haras Poco Sul , 03°06'21.36"S, 60°34'38.06"W, João Junges col. 12.i.2012 / Hirtodrosophila rondonia sp. nov. Junges, Robe e Gottschalk ♂ Description. ♂. Head (Figs. 5–6). Yellow. Frons and face yellow; fronto-orbital plates indistinct, with the same color as the frons. Length ratio of mid to anterior orbital setae = 0.41 (0.30–0.50), length ratio of mid to posterior orbital setae = 0.54 (0.37–0.66), vt index = 0.91, ocellar triangle yellow about 36% (27–60%) of frontal length. Facial carina not prominent, with the same color as the frons. Antennae yellow, with flagellomeres slightly grey, aristae with 4–5 dorsal and one ventral branches plus terminal fork. Palpus yellow with an apical seta and two or three smaller preapical setae. Red eyes with short pile. Genae yellow, first genal setae about 25% (23–27%) of the vibrissae. Cheek index = 0.21 (0.18–0.24), eye index = 1.05 (1.00–1.14).

Thorax (Figs. 3–4). Yellow. Length = 0.73 (0.64–0.80) mm, width = 0.56 (0.51–0.66) mm, 6 irregular rows of acrostichals, no prescutellar setae. Dc index = 0.54 (0.46–0.60). Basal scutellar setae convergent. Scut position index = 0.76 (0.63–0.91). Two prominent katepisternal setae and a row of setulae between them. Anterior katepisternal about 54% of the posterior one. Pleurae and legs yellow.

Wing ( Fig. 44 ). Yellow with veins darkish yellow. Length = 1.48 (1.65–1.35) mm. Length to width ratio = 0.71 (0.62–0.77). Indices: C = 1.47 (1.29–1.59); 4v = 2.09 (1.41–2.52); 5x = 2.27 (1.80–2.57); 4c = 1.38 (1.00–1.65); M = 0.66 (0.43–0.78); hb = 1.85 (1.66–2.00); prox. x = 0.45 (0.36–0.52).

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

Body length = 1.55 (1.35–1.70) mm.

Terminalia ( Figs. 7–13 ). Epandrium microtrichose with about 6 upper setae; ventral lobe prominent but not covering surstylus, with about 15 large setae ( Fig. 7 ). Cerci microtrichose, not fused with epandrium. Surstylus not microtrichose, with 4 peg-like prensisetae, two smaller setulae following prensisetae row and about 13 inner and no outer setae; a crescent process (sensu Vilela and Bächli, 2004) dorsally to the prensisetae ( Figs. 8–9 ). Decasternum narrow, like a bridge ( Fig. 9 ). Hypandrium tapered and rounded anteriorly, fused with gonopods ( Fig. 7 ). Gonopod containing one seta, linked with paraphysis by membranous tissue. Paraphysis with three upper and two median small setulae. Aedeagus ( Figs. 11–13 ) with apex rounded and membranous, facing backwards; subapical portion with small scales; laterally bearing small structures similar to outwards spurs in H. subgilva . Aedeagus with a remarkable lumpy mark in the middle of anterior region. Aedeagal apodeme concave, fused with and shorter than aedeagus.

♀. Unknown.

Etymology. The name “rondonia” refer to the Brazilian state of Rondonia, from where the holotype was collected.

Geographic distribution. This species is known from the type locality and to Pará, in the Caxiuanã National Forest (01°44'14"S, 51°27′25″W).

Figures

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, ♂.

FIGURES 7–13. Hirtodrosophila rondonia sp. nov., male terminalia. 7. Epandrium, cerci and surstyli, holotype, posterior view; 8. Surstyli and decasternum, holotype, posterior view; 9. Surstyli and decasternum, paratype, posterior view; 10. Hypandrium and gonopods, holotype, posterior view; 11–13. Aedeagus, aedeagal apodeme and paraphyses, holotype, ventral, dorsal and left lateral views, respectively. a: aedeagus, aa: aedeagal apodeme, c: cercus, cp: crescent process, d: decasternum, e: epandrium, g: gonopod, h: hypandrium, p: paraphysis, s: surstylus, vle: ventral lobe of epandrium.