Myriophora angustifascia, 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 : 10

Myriophora angustifascia sp. nov.

(Figs 1.5, 9.4, 15.4, 21.2, 21.3, 22.3)

Diagnosis. Female. The brown anterior portion of the abdomen strongly contrasts the yellow-white posterior (Fig. 1.5), and this species is distinguished from other species with contrasting abdomens by the long and narrow abdominal tergite 6 (Fig. 22.3).

Description. Female (Fig. 1.5). Body length 2.24–2.91 mm. Head: Frons yellow-brown, with 2 pairs of supraantennal setae; length of lower supra-antennal setae less than 1/2 of the length of upper pair; upper supra-antennals originate even with lower interfrontal setae. First flagellomere yellow, slightly pointed under arista. Palpus yellowbrown, normal sized. Labrum prominent, enlarged. Labellum normal sized. Thorax: Scutum brown. Scutellum brown. Anterior scutellar setae less than 1/2 length of posterior pair. Pleuron light yellow; anepisternum with setulae and one large seta. Forefemur yellow. Midfemur yellow. Hind femur yellow with a brown patch distally on anterior surface. Wing length 2.14–2.66 mm (Fig. 9.4); costal vein normal; costal length 1.26–1.65 mm; mean costal ratio 0.61. Knob of halter light brown. Abdomen: Tergites 1 and 2 dark brown; tergite 2 with strong, distinct setae on lateral margin. Tergite 5 yellow; posterior setae on tergite 5 short. Tergite 6 greatly narrowed posteriorly and is approximately six times longer than wide; posterodorsal setae on segment 6 equal in length to posteroventral setae. Venter of abdomen with sparse short setae. Oviscape (Fig. 15.4) strongly laterally compressed, with densely setose sternite; sternite slightly, curved dorsally in center; membrane striae very wide and brown in distal half.

Distribution. Costa Rica, Colombia, Ecuador, French Guiana, and northern Brazil.

Host. Collected on unidentified spirobolidan millipedes.

Etymology. A noun from Latin meaning "narrow strip" referring the long, thin 6th abdominal tergite.

Holotype. ♀, ECUADOR: Sucumbios: Sacha Lodge, 0.5°S, 76.5°W, 270m, 13–23.iv.1994, P. Hibbs, Malaise trap [ LACM ENT 037522].

Paratypes. 5♀, same as holotype [ LACM ENT 0 37561, 0 37637, 0 37640, 0 37642, 037653].

Other material examined. BRAZIL: Pará: Belem, 1.45°S, 48.48°W, 6♀, i–iii.1970, T. Aitken, castor oil trap. COLOMBIA: Amazonas: Amacayacu NP, Matamata Station, 3.82°S, 70.26°W, 150m, 1♀, 12–19.vi.2000, A. Parente, CAP-702, Malaise trap, 2♀, 19.xi–3.xii.2001, D. Chota, CAP-2768, Malaise trap, 2♀, 2–11.iv.2000, A. Parente, CAP-101, Malaise trap #2, 1♀, 8–12.iii.2000, M. Sharkey, total sweep sample, 1♀, 9–12.iii.2000, B. Brown, G. Kung, M. Sharkey, Malaise trap #12, San Martin, PNN Amacayacu, 3.77°S, 70.3°W, 1♀, 16– 24.ix.2000, B. Amado, CAP-840, Malaise trap, 3♀, 24.iii–3.iv.2000, B. Amado, CAP-83, Malaise trap #2, 1♀, 24.ix.–2.x.2000, B. Amado, CAP-883, Malaise trap #3, 1♀, 3–11.xi.2000, B. Amado, CAP-1313, Malaise trap; Cauca: Isla Gorgona, 2.97°N, 78.18°W, 7♀, 1.iii.2000, B. Brown, G. Kung, injured millipedes, PNN Gorgona, Mancora, 2.97°N, 78.18°W, 60m, 3♀, 24.iii–8.iv.2000, R. Duque, Malaise trap, CAP-52; Meta: PNN Macarena, Caño Curia, 3.35°N, 73.93°W, 460m, 1♀, 13–30.ix.2004, W. Villalba, CAP-5064, Malaise trap; Vaupés: Est. Biol. Mosiro-Itajura (Caparú), Cent. Amb, 1.07°N, 69.05°W, 60m, 1♀, 17–24.xi.2003, CAP-4436, Malaise trap; Vichada: PNN El Tuparro, 5.35°N, 67.86°W, 2♀, 15.vi.2000, G. Kung, injured millipede. COSTA RICA: Heredia: La Selva Biological Station, 10.43°N, 84.02°W, 40m, 1♀, 18.iii.1999, ALAS, Light L/12/599 ( INBC). ECUADOR: Los Rios: Rio Palenque Science Center, 0.6°S, 79.35°W, 180m, 2♀, 29.iv–5.v.1987, B. Brown, L. Coote, Malaise trap; Napo: Tiputini Station, 0.67°S, 76.25°W, 1♀, 28–30.vi.1998, E. Holscher, C. Carter, Malaise trap, Yasuni Biological Research Station, 0.67°S, 76.39°W, 220m, 2♀, 3–20.xi.1998, T. Pape, B. Viklund, Malaise trap; Sucumbios: Sacha Lodge, 0.5°S, 76.5°W, 270m, 2♀, 13–25.vii.1994, P. Hibbs, Malaise trap, 2♀, 24.v– 3.vi.1994, P. Hibbs, Malaise trap, 5♀, 3–13.iv.1994, P. Hibbs, Malaise trap, 6♀, 4–14.iii.1994, P. Hibbs, Malaise trap. FRENCH GUIANA: Saint-Laurent-du-Maroni: Boeuf Morte, 3.65°N, 53.22°W, 5♀, 28.iv.1996, A. Berkov, ex. dead millipede.