Paragrallomyia citrina, 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 : 51-52

Paragrallomyia citrina new species

( Figs. 17–19 )

Description (female only): Body length 5 mm; wing 4 mm. Head orange brown, thorax and abdomen black. Palpus orange brown. Clypeus brown with sparse pale microsetulae. First flagellomere brown. Fronto-orbital plate yellowish brown. Postpronotal lobe orange. Row of katepisternal setae brownish. Fore tibia dark brown. Fore tarsus mostly white, tarsomere one brown on basal half only. Hind femur mostly dark brown, white on basal quarter and with a small angled preapical white ring. Tergites black. Oviscape black.

Head: First flagellomere covered by white microsetulae. Frontal vitta uniformly orange brown, without a darkened spot anterior to ocellar plate. Frontal vitta flat, not swollen anterior to ocellar plate. Epicephala converging but not immediately merging posterior to ocellar plate ( Fig. 17 ). 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 brown microsetulae. Mid and hind tibia cylindrical, without sulcus on outer face. Cervical sclerite with a whitish oval swelling. Cell r 4+5 open at the tip of the wing.

Abdomen: Single spermathecal duct smooth and apically swollen. Single spermatheca broad basally and tapered apically, spermatheca covered by micro finger-like processes ( Fig. 19 ). Paired spermathecal duct apically broad before splitting into stems. Paired spermathecal duct stems smooth on basal half, apical half covered by finger-like processes. Paired spermathecae oval with an apical nipple-like swelling and with sparse micro finger-like processes.

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 ♀, DEBU00241637 , MNCR) . Paratypes: 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 (2♀, DEBU00241639 , DEBU00241644 ) .

Distribution: Costa Rica.

Etymology: The name P. citrina refers to the striking orange-brown head and postpronotal lobe of this species.

Comments: The brownish-orange head and postpronotal lobe contrasting with the dark body is remarkable in this species.

Figures

FIGURES 17–19. Paragrallomyia citrina n. sp. 17, female, dorsal view and taxonomically significant structures. Abbreviations: ec—Epicephalon, fo—Fronto-orbital plate, fr—Frontal setae, fv—Frontal vitta, iv—Inner vertical seta, os—Orbital seta, ov—Outer vertical seta, pc—Paracephalon, po—Postocellar seta; 18, female, Costa Rica, dorsal view; 19, female internal reproductive structures and taxonomically significant structures. Abbreviations: bc—Bursa copulatrix, vr—Ventral receptacle, pd—Paired spermathecal duct, pds—Paired spermathecal duct stem, ps—Paired spermathecae, sd—Single spermathecal duct, ss—Single spermathecae.