Paragrallomyia colombiana, 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 : 52-53

Paragrallomyia colombiana new species

( Figs. 20–23 )

Description: Body length 5 mm; wing 4 mm. Head, thorax (mesonotum dark brown) and abdomen brown. Palpus dark brown except for white outer face. Clypeus dark brown with sparse pale microsetulae. First flagellomere dark brown. Fronto-orbital plate dark brown. Row of katepisternal setae brownish. Fore tibia brown. Fore tarsus mostly white, tarsomere one brown on basal ¾ only. Hind femur mostly brown, narrowly white basally and with a small angled preapical white ring. Tergites brown. Oviscape brown.

Head: First flagellomere covered by pale microsetulae. Epicephalon somewhat swollen above ocellar plate. Frontal vitta darkened anterior to ocellar plate ( Fig. 20 ). Frontal vitta flat, not swollen anterior to ocellar plate. Epicephala merging immediately posterior to ocellar plate. 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 flattened, sulcus on outer face strongly pronounced and curved. Female cervical sclerite yellowish and smooth, without swelling. Cell r 4+5 open at the tip of the wing.

Female Abdomen: Single spermathecal duct with an apical rounded swelling. Single spermatheca cylindrical, with sparse small finger-like swellings on apical half. Paired spermathecal duct swollen apically before splitting into stems. Paired spermathecal duct stems tapered on basal third, broad on apical half with small finger-like processes ( Fig. 21 ). Paired spermathecae oval and with an apical nipple-like swelling, invaginated apically only. Male abdomen: Copulatory fork inner basal lobes cylindrical, less than half as long as the arms. Ejaculatory apodeme smaller than epandrium and with a very small blade, length subequal to sperm pump. Phallapodeme short, not extending to anterior limit of hypandrium. Distiphallus long, longer than epandrium; phallic bulb subequal in length and width ( Fig. 23 ). Distal distiphallus short and thin, 1/4 of length and almost half of width of basal distiphallus.

Type material: Holotype: COLOMBIA. Chocó , Ensenada de Utria Natl. Pk., Visitor Centre, 0–100 m, Malaise trap, 4–19.VII.2000, J. Pérez (1♀, DEBU00138494 , IAVH) . Paratypes: COLOMBIA. Chocó , Ensenada de Utria Natl. Pk., Visitor Centre, 0–100 m, Malaise trap, 4–19.VII.2000, J. Pérez (1♂, DEBU00138494 ) ; Chocó , Ensenada de Utria Natl. Pk., Cocalito, 0–100 m, Malaise trap, 4–19.VII.2000, J. Pérez (1♀, DEBU00138495 ) ; Chocó , PNN Utriá, Cocalito Dosel, 6º01’ N 77º20’ W, 20 m, Malaise, 1.XI–26.XII.2000, M. 1339, J. Pérez (1 ♂, IAVH) .

Distribution: Colombia.

Comments: P. colombiana resembles P. aequorea , differing mainly by the slightly elevated epicephalon and longer inner basal lobes of copulatory fork.

Figures

FIGURES 20–23. Paragrallomyia colombiana n. sp. 20, female, dorsal view; 21, female internal reproductive structures, ventral view; 22, male, lateral view; 23, copulatory fork and internal reproductive structures with taxonomically significant structures. Abbreviations: bdp—Basal distiphallus, ddp—Distal distiphallus, ea—Ejaculatory apodeme, ep—Epandrium, fa—Fork arm, hy—Hypandrium, il—Inner basal lobes, pb—Phallic bulb, ph—Phallapodeme.