Myriophora annulata, 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 : 11-12

Myriophora annulata sp. nov.

(Figs 1.7, 9.6, 15.6, 22.5, 23.2)

Diagnosis. Female. This species is distinguished by the extremely elongate oviscape turned down at the apex, with short setulae on the lateral margin of the sternite (Fig. 23.2), and by the strong setae ventrally and laterally on the abdomen with well-defined sockets at the base (Fig. 22.5).

Description. Female (Fig. 1.7). Body length 2.0– 2.56 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 even with lower interfrontal setae. First flagellomere yellow-brown, rounded under arista. Palpus yellowbrown, normal sized. Labrum normal sized. Labellum normal sized. Thorax: Scutum light brown. Scutellum light brown. Anterior scutellar setae about 3/4 the length of posterior pair. Pleuron dusky yellow; anepisternum with setulae and one large seta. Forefemur yellow. Midfemur yellow. Hind femur yellow with brown patch distally on anterior surface. Wing length 2.1–2.52 mm (Fig. 9.6); costal vein normal; costal length 1.09–1.44 mm; mean costal ratio 0.54. Knob of halter 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 rectangular to slightly narrowing posteriorly; posterodorsal setae on segment 6 equal in length to posteroventral setae. Venter of abdomen with dense, short setae. Oviscape (Fig. 15.6) strongly laterally compressed; arcuate, turning down ventrally at apex; membrane striations wide near base and becoming more compressed distally (Fig. 23.2); sclerites brown; membrane brown.

Distribution. Costa Rica.

Host. Unknown.

Etymology. An adjective from Latin meaning "ringed" for the distinct, round sockets around the base of the ventral and lateral abdominal setae.

Holotype. ♀, COSTA RICA: San José: Zurquí de Moravia, 10.05°N, 84.02°W, 1600m, 1–15.vi.1993, P. Hanson, Malaise trap [ LACM ENT 053041].

Paratypes. 2♀, same as holotype, i.1989, [ LACM ENT 0 46023, 046006], 3♀, same as holotype, i.1996, [ LACM ENT 0 78634, 0 78677, 114774].

Other material examined. COSTA RICA: Cartago: La Cangreja, 9.80°N, 83.97°W, 1950m, 1♀, vi– vii.1992, P. Hanson, Malaise trap; Heredia: 6km ENE Vara Blanca, 10.18°N, 84.12°W, 2000m, 1♀, 21.iv.2002, ALAS, Malaise trap 20/M/17/097, Refugio 2000m, near Vara Blanca, 10.18°N, 84.11°W, 2000m, 1♀, 10.iii.2002, ALAS, Malaise trap 20/M/17/037, 1♀, 21.ii.2002, ALAS, Malaise trap 20/M/17/017, 1♀, 23.iii.2002, ALAS, Malaise trap 20/M/17/057, 1♀, 9.iv.2002, ALAS, Malaise trap 20/M/09/069, 1♀, 9.iv.2002, ALAS, Malaise trap 20/M/11/071; Limon: Pacuarito, 10.11°N, 83.46°W, 300m, 1♀, 23–26.viii.1996, Gustafsson et al., Malaise trap; Puntarenas: Las Alturas, 8.95°N, 82.83°W, 1500m, 3♀, i–iii.1995, P. Hanson, Malaise trap; San José: 6km N San Gerardo, 9.55°N, 83.8°W, 2800m, 1♀, i.1993, P. Hanson, Malaise trap, 1♀, vi.1992, P. Hanson, Malaise trap, 1♀, viii.1992, P. Hanson, Malaise trap, 1♀, x.1992, P. Hanson, Malaise trap, 2♀, xii.1992, P. Hanson, Malaise trap, Zurquí de Moravia, 10.05°N, 84.02°W, 1600m, 2♀, i.1996, P. Hanson, Malaise trap, 1♀, ii.1994, P. Hanson, Malaise trap, 3♀, iii–iv.1993, P. Hanson, Malaise trap, 2♀, iii.1989, P. Hanson, Malaise trap, 2♀, iv.1995, P. Hanson, Malaise trap, 4♀, ix–x.1990, P. Hanson, Malaise trap, 2♀, ix–x.1993, P. Hanson, Malaise trap, 3♀, v.1995, P. Hanson, Malaise trap, 2♀, vi.1992, P. Hanson, Malaise trap, 3♀, vi.1995, P. Hanson, Malaise trap, 1♀, vii.1990, P. Hanson, Malaise trap, 2♀, vii.1991, P. Hanson, Malaise trap, 2♀, x–xii.1990, P. Hanson, Malaise trap, 2♀, x.1995, P. Hanson, Malaise trap.