Drosophila neocordata 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 : 540

Drosophila neocordata Magalhães, 1956

( Fig. 16 )

Non-type material. Strain CG ( Campo Grande , Mato Grosso do Sul, Brazil): 12 males dissected .

Male terminalia. The dorso-ventral region of the epandrium is angular. The epandrium is covered with short and long epandrial bristles ( Fig. 16E ). The cercus is U-shaped, covered with cercal bristles ( Fig. 16E ). The surstyli is concave and has a row of 5 to 6 surstylar teeth arranged throughout the internal portion of each surstylus and a tuft of long surstylar bristles at the inferior region ( Fig. 16E ). Each surstylus of this species have a unique characteristic, not seen in other subgroups, the surstylar process. This structure is found connected to each surtylus and it has surstylar teeth at its ends ( Fig. 16E ). The hypandrium is small and it has a median gonocoxites, with the presence of a hypandrial bristle at each end ( Fig. 16A ). The aedeagus presents a pair of chitinous hooks in the frontal region of the aedeagal apex, which extend to the ventral region of the aedeagus body ( Fig. 16A–D ). There is a pair of long protuberances, serrated at the edge, arranged laterally, and fused to the aedeagus; we suggest that these protuberances can be the aedeagal sheath partly fused to the aedeagus body ( Fig. 16B, C ). The pregonites are more different, they seem to be fused into a single structure, and present two small pregonal bristles ( Fig. 16B, C ). The ventral postgonites are long, thin, and bifurcated in the middle region; they are also folded inward at their ends, which fit into the chitinous hooks ( Fig. 16B–D ). The pregonite and the ventral postgonites are connected to the phallapodeme ( Fig. 16B–D ). The phallapodeme is short and thin ( Fig. 16B, D ).

Figures

FIGURE 16. Scanning electron micrographs of D. neocordata male terminalia (A) Ventral view of terminalia and aedeagal apex (1.180 x magnification). (B) Lateral view of aedeagus and phallapodeme.Arrow heads = pair of long protuberances suggested as aedeagal sheath partly fused to the aedeagus body (801 x magnification). (C) Lateral view of aedeagus (1.110 x magnification). (D) Ventral view of aedeagus and phallapodeme (236 x magnification). (E) Dorsal view of terminalia (surstyli and surstylar processes) (1.730 x magnification). The imagens are from CG strain. Abbreviations in Table 1.