Myriophora tenuis, 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 : 47

Myriophora tenuis sp. nov.

(Figs 8.5, 14.5, 20.4, 21.19)

Diagnosis. Female. This species is easily recognized by the inflated costal vein (Fig. 21.19), the deep oviscape sclerites that extend over most of the lateral face, and the dorsoventral expansion at the apex of the oviscape (Fig. 20.4).

Description. Female (Fig. 8.5). Body length 1.79–1.93 mm. Head: Frons yellow, with 1 pair of supra-antennal setae; supra-antennals originate even with lower interfrontal setae. First flagellomere yellow, slightly pointed under arista. Palpus yellow, normal sized. Labrum prominent, enlarged. Labellum normal sized. Thorax: Scutum yellow. Scutellum yellow. Anterior scutellar setae about 3/4 of the length of posterior pair. Pleuron yellow; anepisternum with many setulae. Forefemur yellow. Midfemur yellow. Hind femur yellow. Wing length 1.54–1.68 mm (Fig. 14.5); costal vein inflated; costal length 0.91–0.98 mm; mean costal ratio 0.59. Knob of halter dusky yellow. Abdomen: Tergites 1 and 2 dusky yellow; tergite 2 with strong, distinct setae on lateral margin. Tergite 5 dusky yellow; posterior setae on tergite 5 short. Tergite 6 rectangular to slightly narrowing posteriorly; posterodorsal setae on segment 6 equal in length to posteroventral setae. Venter of abdomen with sparse short setae. Oviscape (Fig. 20.4) sclerites light brown; membrane whitish; sclerites deep, covering most of the lateral face and bearing many distinct setulae.

Distribution. Known from one site in Colombia.

Host. Unknown.

Etymology. An adjective from Latin for "thin" referring to the small gap that exposes membrane between sclerites on the lateral surface of the oviscape.

Holotype. ♀, COLOMBIA: Vaupés: Est. Biol. Mosiro-Itajura (Caparú), Igapo, 1.07°N, 69.05°W, 60m, 17– 24.xi.2003, J. Pinzón, CAP-4434, Malaise trap [ LACM ENT 222522] ( IAVH).

Paratypes. ♀, same as holotype, 3–10.xi.2003, CAP-4428, [ LACM ENT 222538].