Myriophora fuscidorsum, 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 : 23

Myriophora fuscidorsum sp. nov.

(Figs 3.8, 10.10, 16.10)

Diagnosis. Female. This species can be distinguished from most New World species of Myriophora by the presence of two large setae on the anepisternum. It is discernable from M. gigantea by the smaller body size and the presence of long setae on the posterior margin of abdominal T5.

Description. Female (Fig. 3.8). Body length 2.77–3.33 mm. Head: Frons dusky yellow, with 2 pairs of supraantennal setae; length of lower supra-antennal setae less than 1/2 the length of upper pair; upper supra-antennals originate above lower interfrontal setae. First flagellomere brown, rounded under arista. Palpus yellow-brown, slightly inflated. Labrum prominent, enlarged. Labellum normal sized. Thorax: Scutum dusky yellow. Scutellum dusky yellow. Anterior scutellar setae near equal in length to posterior pair. Pleuron dusky yellow; anepisternum with setulae and at least two larger setae. Forefemur yellow. Midfemur yellow. Hind femur yellow with brown patch distally on anterior surface. Wing length 2.45–3.08 mm (Fig. 10.10); costal vein normal; costal length 1.40– 1.93 mm; mean costal ratio 0.60. Knob of halter light brown. Abdomen: Tergites 1 and 2 light brown; tergite 2 with strong, distinct setae on lateral margin. Tergite 5 light brown; posterior setae on tergite 5 short. Tergite 6 greatly narrowed posteriorly; posterodorsal setae on segment 6 shorter than posteroventral setae. Venter of abdomen with dense, long setae. Oviscape (Fig. 16.10) strongly laterally compressed; sclerites brown; membrane light brown with dark brown striations; tergite about 3 times longer than sternite.

Distribution. Bolivia, Colombia, and Venezuela.

Host. Unknown.

Etymology. A noun from Latin for "dark back" referring to the very dark abdominal tergites.

Holotype. ♀, BOLIVIA: La Paz: Cumbre Alto Beni, 40 km N Caranavi, 15.83°S, 67.56°W, 1600m, 15– 19.iv.2003, Brown, Marcotte, Zumbado, Malaise trap [ LACM ENT 183598].

Paratypes. 4♀, same as holotype [ LACM ENT 184391, 183947, 183673, 184101].

Other material examined. BOLIVIA: La Paz: Cumbre Alto Beni, 40 km N Caranavi, 15.83°S, 67.56°W, 1600m, 4♀, 12–15.iv.2003, Brown, Marcotte, Zumbado, Malaise trap. COLOMBIA: Amazonas: San Martin, PNN Amacayacu, 3.77°S, 70.3°W, 1♀, 24.ix.–2.x.2000, B. Amado, CAP-883, Malaise trap #3; Boyaca: Iguaque [IG-5-8], 5.70°N, 73.46°W, 2850m, 1♀, 2–19.iv.2000, P. Reina, CAP-29, Malaise trap #8; Huila: PNN Cueva de los Guacharros, Rio Suaza, 1.63°N, 76.1°W, 2020m, 1♀, 28.xi–1.xii.2001, D.Campos, CAP-2542, Malaise trap; Magdalena: PNN Santa Marta, Bella Vista, 10.80°N, 73.66°W, 1500m, 1♀, 15–30.viii.2001, P.Cardona, CAP- 2014, Malaise trap, 1♀, 21.ix–8.x.2001, J. Cantillo, CAP-2212, Malaise trap, 1♀, 7.v–1.vi.2001, J. Cantillo, Malaise trap, CAP-1745, PNN Santa Marta, El Chuscal, 10.80°N, 73.65°W, 2300m, 1♀, 13–30.vii.2001, J. Cantillo, Malaise trap, CAP-1936; Valle de Cauca: PNN Farallones de Cali, La Meseta, 3.57°N, 76.67°W, 2080m, 1♀, 10–24.xii.2003, S. Sarria, Malaise trap, CAP-4556, 1♀, 10–25.ii.2004, S. Sarria, CAP-4566, Malaise trap, 1♀, 25.ix–9.x.2003, S. Sarria, Malaise trap, CAP-4569, 2♀, 26.xi–10.xii.2003, S. Sarria, Malaise trap, CAP-4562. VENEZUELA: Aragua: Pico Guacamayo, 10.44°N, 67.56°W, 1830m, 4♀, 15–30.xi.1997, T. Pape, Malaise trap, Rancho Grande, PN Henri Pittier, 10.35°N, 67.59°W, 1150m, 1♀, 15–30.xi.1997, T. Pape, Malaise trap.