Myriophora inaequalisetarum, 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 : 27-28

Myriophora inaequalisetarum sp. nov.

(Figs 4.6, 11.6, 17.6, 23.8)

Diagnosis. Female. This species is very similar to other species of Myriophora with thin, elongated, tube-like oviscapes, with thin sclerites. Myriophora inaequalisetarum is distinguished from M. communis and M. uruguaiensis by the short oviscape tergite that ends before the apex, the wider and laterally flattened sternite, and the short anterior scutellar setae (e.g. Fig. 21.17).

Description. Female (Fig. 4.6). Body length 1.61–1.82 mm. Head: Frons yellow, with 2 pairs of supraantennal setae; length of lower supra-antennal setae greater than 1/2 the length of upper pair; upper supra-antennals originate above 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 1.44–1.72 mm (Fig. 11.6); costal vein normal; costal length 0.81–0.84 mm; mean costal ratio 0.54. Knob of halter light brown. Abdomen: Tergites 1 and 2 light brown; tergite 2 with strong, distinct setae on lateral margin. Tergite 5 brown; posterior setae on tergite 5 short. Tergite 6 nearly rectangular, only slightly narrowing posteriorly; posterodorsal setae on segment 6 shorter than posteroventral setae. Venter of abdomen with sparse, long setae. Oviscape (Figs 17.6, 23.8) sclerites brown, membrane very light with light brown striations; oviscape weakly laterally compressed, sternite terminating before apex; small setulae not visible under stereo microscopy.

Distribution. Known from Bolivia, Brazil, and Colombia.

Host. Collected on an unidentified injured millipede.

Etymology. A noun from Latin for "unequal setae" referring the anterior pair of scutellar setae that are much shorter than the posterior pair.

Holotype. ♀, COLOMBIA: Amazonas: Amacayacu NP, Matamata Station, 3.82°S, 70.26°W, 150m, 10.iii.2000, B. Brown, G. Kung, injured millipede [ LACM ENT 126479] ( IAVH).

Paratypes. 4♀, same as holotype, [ LACM ENT 126478, 126480–2].

Other material examined. BOLIVIA: Beni: 5 km N Rurrenabaque [bridge nr airport], 14.43°S, 67.51°W, 200m, 1♀, 23.iv.2003, B. Brown, injured millipede. BRAZIL: Pará: Belem, 1.45°S, 48.48°W, 1♀, ix.1970, T. H. G. Aitken, sticky trap. COLOMBIA: Amazonas: Lorena, Amacayacu National Park, 3.04°S, 69.99°W, 210m, 1♀, 27.viii–1.ix.2001, D. Campos, M. Sharkey, Malaise trap, CAP-2233, San Martin, PNN Amacayacu, 3.77°S, 70.3°W, 1♀, 10–18.x.2000, B. Amado, CAP-835, Malaise trap, 1♀, 16–24.viii.2000, B. Amado, CAP-842, Malaise trap, 1♀, 19–27.xi.2000, B. Amado, CAP-1318, Malaise trap, 1♀, 29.xi–5.xii.2000, B. Amado, CAP- 1314, Malaise trap, 1♀, 3–11.xi.2000, B. Amado, CAP-1313, Malaise trap, 1♀, 30.i–7.ii.2001, B. Amado, Malaise trap CAP-2037, 1♀, 30.vii–8.viii.2000, B. Amado, CAP-836, Malaise trap, 1♀, 6–15.iv.2000, B. Amado, CAP-84, Malaise trap; Putumayo: PNN La Paya, Bocana Mamansoya, 0.1°S, 74.97°W, 330m, 1♀, 22–26.ix.2001, D. Campos, Malaise trap CAP-2082.