Paragrallomyia bifurcata, Ferro & Marshall, 2020

Ferro, Gustavo Borges & Marshall, Stephen A., 2020, A redefinition of Paragrallomyia Hendel (Diptera: Micropezidae, Taeniapterinae) and a revision of the P. albibasis complex, Zootaxa 4822 (1), pp. 39-70 : 48-49

Paragrallomyia bifurcata new species

( Figs. 10–11 )

Description (female only): Body length 6 mm; wing 4 mm. Head and abdomen black, thorax black. Palpus dark brown except for white outer face. Clypeus brown with sparse pale microsetulae. First flagellomere dark brown. Fronto-orbital plate dark brown. Row of katepisternal setae brownish. Fore tibia dark brown. Fore tarsus mostly white, tarsomere one brown on basal half only. Hind femur mostly brown, white on basal quarter and with a small angled preapical white ring. Tergites black. Oviscape black.

Head: First flagellomere covered by pale microsetulae. Frontal vitta with a darkened spot anterior to ocellar plate. Frontal vitta flat, not swollen anterior to ocellar plate. Epicephala converging, not immediately merging posterior to ocellar plate. Epicephalon somewhat swollen above frontal vitta level. Epicephalon somewhat swollen above frontal vitta level.

Thorax: Mesonotum with lines of thin brownish microsetulae. Anterior half of postpronotal lobe bare. Femur covered with sparse black microsetulae. Mid and hind tibia almost cylindrical, sulcus on outer face weak. Cervical sclerite with a whitish oval swelling. Cell r 4+5 open at the tip of the wing.

Abdomen: Single spermathecal duct with an apical small rounded swelling. Single spermatheca cylindrical and forked, with sparse small rounded processes ( Fig. 11 ). Paired spermathecal duct uniformly thick, slightly tapered on apical third before splitting into stems. Paired spermathecal duct stems uniformly thick, slightly convoluted. Paired spermathecae oval with an apical nipple-like swelling.

Type material: Holotype: COSTA RICA. Heredia, Rara Avis Nat. Res. 12 km S Las Horquetas , 10º17’00” N 84º02’50” W, 700 m, 22–27.II.2005, S. A. Marshall (1 ♀, DEBU00241651 , MNCR) . Paratypes: Heredia, Rara Avis Nat. Res. 12 km S Las Horquetas , 10º17’00” N 84º02’50” W, 700 m, 22–27.II.2005, S. A. Marshall (3♀, DEBU00241632 , DEBU00241634 , DEBU00241650 ) .

Distribution: Costa Rica.

Etymology: The specific name refers to the remarkable bifurcate single spermathecae of this species.

Comments: The conspicuously bifurcate single spermathecae confirm that P. bifurcata is distinct from the very similar P. albibasis .

Figures

FIGURES 10–11. Paragrallomyia bifurcata n. sp. 10, female, lateral view;11, female internal reproductive structures, ventral view.