Nigripeza cali, Marshall, 2022

Marshall, Stephen A., 2022, Amapeza and Nigripeza, new genera of Neotropical micropezid flies (Diptera, Micropezidae, Taeniapterinae), Zootaxa 5092 (3), pp. 251-272 : 265-267

Nigripeza cali new species

Figures 7A–7E

Description (male only): Colour: Body mostly black to dark brown dorsally, frontal vitta mostly dark, orange only at sides of anterior margin. Thoracic pleuron silvery microsetulose except for shiny anterior half of anepisternum and posterior corner of propleuron. Hind femur yellowish with a strong dark ring in basal third and slight darkening on distal half. Tergites dull black; abdominal pleuron on segments 1–4 apparently mostly white except for the black pleural sac on upper 3/4 and entire length of P2 with black area extending from pleural sack on to P3; segments 4–5 brownish setulose.

Head: Frontal vitta broad and almost parallel-sided on portion behind ocelli, expanded and elevated in front of ocelli, dark area tapered to anterior margin. Orbital plate with very fine striae; epicephalon shiny and bare, paracephalon microsetulose. Clypeus sparsely microsetulose posterolaterally, middle of anterior margin bare.

Thorax: One dorsocentral bristle. Vertical row of katepisternal bristles black. Pleuron with dense silvery microsetulosity except anterior half and posterodorsal corner of anepisternum. Notum uniformly, sparsely and indistinctly microsetulose, faintly vittate with a dark dorsocentral vitta bordered by silvery microsetulose areas.

Male abdomen: Genital fork incurved, tapered arms slightly shorter than base of fork; short stout bristles present on entire mesal surface from base to apex, apical bristles about as long as arm width. Distiphallus short and broad, ending in a broad but tapered phallic bulb. Ejaculatory apodeme greatly reduced, barely larger than sperm pump; ejaculatory duct very short.

Type material: Holotype (♂, IAVH) COLOMBIA. Valle del Cauca, PNN Farallones de Cali, Anchicaya , 3°26'S 76°48'W, 650M, Malaise, 2–3.27.01, S. Sarria leg, m1536

Etymology: The species name is a noun in apposition taken from part of the type label.

Comments: Nigripeza cali is remarkable for the short and thick ejaculatory duct running to a stout sperm pump with a very short ejaculatory apodeme. Females are unknown but the external features of this species, especially the unusually dark frontal vitta, seem distinctive.

Figures

FIGURES 7A–7E. Nigripeza cali new species, Colombia, holotype male. A, head, dorsal; B, habitus, lateral; C, head, left lateral; D, terminalia, left lateral; E, abdomen, ventral. Abbreviations: bdp—basal distiphallus, c—cercus, e—epandrium, ea—ejaculatory apodeme, ed—ejaculatory duct, hy—hypandrium, pb—phallic bulb, ph—phallapodeme, pp—phallic plate, spp—sperm pump