Myriophora nigra, Hash, John M. & Brown, Brian V., 2015

Hash, John M. & Brown, Brian V., 2015, Revision of the New World Species of the Millipede-Parasitic Genus Myriophora Brown (Diptera: Phoridae), Zootaxa 4035 (1), pp. 1-79 : 36-37

Myriophora nigra sp. nov.

(Figs 6.2, 12.7, 18.8, 22.12)

Diagnosis. Female. The black ventral and dorsal margins of the oviscape sclerites (Fig. 18.8) and the notch in the posterior margin abdominal T5 (Fig. 22.12) clearly distinguish M. nigra from all other Myriophora with a bare anepisternum.

Description. Female (Fig. 6.2). Body length 2.87–3.54 mm. Head: Frons brown, with 1 pair of supra-antennal setae; supra-antennals originate above lower interfrontal setae. First flagellomere yellow-brown, rounded under arista. Palpus yellow-brown, slightly inflated. Labrum prominent, enlarged. Labellum normal sized. Thorax: Scutum brown. Scutellum brown. Anterior scutellar setae about 3/4 length of posterior pair. Pleuron dusky yellow; anepisternum bare. Forefemur yellow. Midfemur yellow. Hind femur yellow with brown patch distally on anterior surface. Wing length 2.87–3.82 mm (Fig. 12.7); costal vein normal; costal length 1.79–2.17 mm; mean costal ratio 0.59. Knob of halter brown. Abdomen: Tergites 1 and 2 contrasting, yellow anteriorly, brown posteriorly; tergite 2 with strong, distinct setae on lateral margin. Tergite 5 contrasting, yellow anteriorly, brown posteriorly; posterior setae on tergite 5 short. Tergite 6 greatly narrowed posteriorly; posterodorsal setae on segment 6 equal in length to posteroventral setae. Venter of abdomen with dense, long setae. Oviscape (18.8) sclerites dark brown with black margins, strongly laterally compressed; membrane striations conspicuously dark; sclerites and membrane clearly differentiated.

Distribution. Colombia and Venezuela.

Host. Unknown.

Etymology. An adjective from Latin for "black" referring to the black ventral and dorsal margins of the oviscape.

Holotype. ♀, COLOMBIA: Boyaca: Iguaque [IG-5-8], 5.70°N, 73.46°W, 2850m, 17.iii–1.iv.2000, P. Reina, CAP-127, Malaise trap #7 [ LACM ENT 067425] ( IAVH).

Paratypes. ♀, VENEZUELA: Aragua: Pico Guacamayo, 10.44°N, 67.56°W, 1830m, 15–30.xi.1997, T. Pape, Malaise trap [ LACM ENT 133478].