Myriophora obscuritergum, 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 : 37-38

Myriophora obscuritergum sp. nov.

(Figs 6.4, 12.9, 18.10)

Diagnosis. Female. Myriophora obscuritergum is different from other species of Myriophora with darker-colored abdominal T1, T2, and T3 and light-colored T5 by the light brown coloration of T4 and the shape of T6, in which the anterior margin is about 3x wider than the posterior margin.

Description. Female (Fig. 6.4). Body length 2.52–3.22 mm. Head: Frons 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 even with lower interfrontal setae. First flagellomere yellow, rounded under arista. Palpus yellow, normal sized. Labrum prominent, enlarged. Labellum normal sized. Thorax: Scutum dusky yellow. Scutellum dusky yellow. Anterior scutellar setae less than 1/2 the length of posterior pair. Pleuron yellow; anepisternum with setulae and one large seta. Forefemur yellow. Midfemur yellow. Hind femur yellow with brown patch distally on anterior surface. Wing length 1.96–2.49 mm (Fig. 12.9); costal vein normal; costal length 1.16–1.47 mm; mean costal ratio 0.57. 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 yellow; posterior setae on tergite 5 short. Tergite 6 greatly narrowed posteriorly; posterodorsal setae on segment 6 longer than posteroventral setae. Venter of abdomen with sparse, long setae. Oviscape (Fig. 18.10) sclerites browns; membrane lightly colored with conspicuous brown striations; strongly laterally compressed; sternite deepest in center and tapering toward ends.

Distribution. Colombia.

Host. Unknown.

Etymology. A noun from Latin meaning "dusky tergum" referring to the darker coloration of abdominal tergite 4 relative to the lighter colored tergite 5.

Holotype. ♀, COLOMBIA: Bolivar: SFF Colorados, El Mirador, 9.90°N, 75.12°W, 400m, 3–18.ix.2001, E. Deulufeut, CAP-2162, Malaise trap [ LACM ENT 187238] ( IAVH).

Paratypes. COLOMBIA: Bolivar: SFF Colorados, El Mirador, 9.90°N, 75.12°W, 400m, 3♀, 18.viii– 3.ix.2001, E. Deulofeut, CAP-2051, Malaise trap [ LACM ENT 172771, 172751, 173102], 2♀, 22.ix–7.x.2001, E. Deulufeut, CAP-2165, Malaise trap [ LACM ENT 232260, 214517], 4♀, 3–18.viii.2001, E. Deulufeut, CAP-2048, Malaise trap [ LACM ENT 186578, 186505, 186495, 186542]; Magdalena: PNN Tayrona, Palangana , 11.33°N, 74.03°W, 30m, 1♀, 18–31.x.2001, R. Henriquez, CAP-2227, Malaise trap [ LACM ENT 228776].