Drosophila parasaltans Magalhães, 1956

Roman, Bruna Emilia & Madi-Ravazzi, Lilian, 2021, Male terminalia morphology of sixteen species of the Drosophila saltans group Sturtevant (Diptera, Drosophilidae), Zootaxa 5061 (3), pp. 523-544 : 535

Drosophila parasaltans Magalhães, 1956

( Fig. 12 )

Non-type material. Strain B 17-5 ( Belém , Pará, Brazil): 30 males dissected .

Male terminalia. The epandrium displays an angular dorso-ventral region covered with short and long epandrial bristles ( Fig. 12C ). It presents a pair of epandrial ventral processes similar to the sturtevanti subgroup and epandrial extensions similar to the saltans subgroup ( Fig. 12B, C ); however, the pair of epandrial extensions protrude from the lower ventral border, they are connected to the epandrial ventral processes, and they are not located proximally below the surstyli ( Fig. 12B, C ). The cercus is U-shaped, covered with cercal bristles ( Fig. 12C ). The surstyli morphology of this species is very different; they are concave, in the shape of a “hand” ( Fig. 12A, C ). Each surstylus has a row of 5 to 6 surtylar teeth on both edges, arranged on the margin of the internal portion, and carries a tuft of small surstylar bristles in the lower region ( Fig. 12A, C ). The hypandrium is short, thin and carries a long hypandrial bristle on each side of the median gonogoxite ( Fig. 12C ). The aedeagal sheath is smooth, serrated at the edge and it has no scales or bristles ( Fig. 12B, D, E ). The aedeagal apex is membranous ( Fig. 12B, D, E ). The phallus presents a pair of bifurcated ventral postgonites ( Fig. 12D ), best viewed in the optical image. The dorsal portion of the aedeagus has a unique and membranous structure, which covers the pair of ventral postgonites ( Fig. 12D ). The pregonites are short and thin; each pregonite presents two or three small bristles ( Fig. 12D ). The phallapodeme is long ( Fig. 12D ).

Figures

FIGURE 12. Scanning electron micrographs of D. parasaltans male terminalia. (A) Ventral view of surstylus (3.160 x magnification). (B) Lateral view of aedeagus (1.410 x magnification). (C) Ventral view of terminalia (523 x magnification). (D) Lateral view of aedeagus and phallapodeme (590 x magnification). (E) Dorsal view of aedeagus (1.960 x magnification). The imagens are from B 17-5 strain. Abbreviations in Table 1.