Myriophora dolionatis, 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 : 21-22

Myriophora dolionatis sp. nov.

(Figs 3.6, 10.9, 16.9)

Diagnosis. Female. This species is similar to M. porrecta and M. misionesensis but differs by the orientation of the oviscape membrane (Fig. 16.9), the more posteriorly pointing anepisternal setae and the barrel-shaped abdominal segment 6 (Fig. 3.6), which is discontinuous with the rest of the abdomen.

Description. Female (Fig. 3.6). Body length 2.42–2.98 mm. Head: Frons dusky yellow, with 1 pair of supraantennal setae; supra-antennals originate above lower interfrontal setae. First flagellomere yellow, slightly pointed under arista. Palpus yellow, normal sized. Labrum prominent, enlarged. Labellum normal sized. Thorax: Scutum dusky yellow. Scutellum dusky yellow. Anterior scutellar setae about 3/4 the length of posterior pair. Pleuron yellow; anepisternum with a few setulae. Forefemur yellow. Midfemur yellow. Hind femur yellow. Wing length 2.03–2.52 mm (Fig. 10.9); costal vein normal; costal length 1.19–2.58 mm; mean costal ratio 0.60. Knob of halter light brown. Abdomen: Tergites 1 and 2 contrasting, yellow anteriorly, brown posteriorly; tergite 2 with strong, distinct setae on lateral margin. Tergite 5 contrasting, yellow anteriorly, brown posteriorly; posterior setae on tergite 5 short. Tergite 6 greatly narrowed posteriorly; posterodorsal setae on segment 6 equal in length to posteroventral setae. Venter of abdomen with dense, short setae. Oviscape (Fig. 16.9) strongly laterally compressed with conspicuous brown striae in membrane; tergite brown, sternite brown and only half the length of tergite.

Distribution. Costa Rica to Colombia.

Host. This species has been collected on both cyanogenic aphelidesmid ( Polydesmida ) and benzoquinoneproducing spirobolidan millipedes.

Etymology. A noun from Latin for "barrel buttocks" referring the cylindrical-shape of the abdominal segment 6.

Holotype. ♀, COSTA RICA: Alajuela: Soltis Center, 10.383°N, 84.618°W, 468m, 1♀, 10.viii.2011, J. Hash, injured millipede [ LACM ENT 307280].

Paratypes. 4♀, COSTA RICA: Alajuela: Palma Road 142, 10.504°N, 84.703°W, 492m, 11.viii.2011, J. Hash, injured millipede [ LACM ENT 307276–9].

Other material examined. COLOMBIA: Amazonas: Amacayacu NP, Matamata Station, 3.82°S, 70.26°W, 150m, 3♀, 30.viii.1997, B. Brown, G. Kung, injured millipede, San Martin, PNN Amacayacu, 3.77°S, 70.3°W, 1♀, 11–19.iii.2001, B. Amado, CAP-2036, Malaise trap. COSTA RICA: Alajuela: Los Chiles de Aguas Zarcas, 10.40°N, 84.33°W, 300m, 1♀, i.1990, P. Hanson, Malaise trap; Guanacaste: Santa Rosa National Park, 10.95°N, 85.62°W, 300m, 2♀, 18.x–8.xi.1986, I. Gauld, D. Janzen, Malaise trap BH-12-C, 1♀, 18.x–8.xi.1986, I. Gauld, D. Janzen, Malaise trap SE-6-C, 1♀, 27.ix–18.x.1986, I. Gauld, D. Janzen, Malaise trap BH-11- O, 4♀, 27.ix– 18.x.1986, I. Gauld, D. Janzen, Malaise trap BH-12-C; Limon: 4km NE Bribri, 9.63°N, 82.82°W, 50m, 1♀, xii.1989 – iii.1990, P. Hanson, Malaise trap; Puntarenas: 5km W Piedras Blancas, 8.77°N, 83.28°W, 100m, 1♀, viii.1991, P. Hanson, Malaise trap; San José: Zona Protectora El Rodeo, 9.91°N, 84.28°W, 1000m, 3♀, 7.viii.2001, B.V. Brown, injured millipede. DOMINICAN REPUBLIC: Hato Mayor: Parque Los Haitises, 3kmW Cueva de Arena, 19.07°N, 69.48°W, 20m, 1♀, 7–9.vii.1992, Davidson et al; Puerto Plata: Pico El Murazo, 19.68°N, 70.95°W, 910m, 1♀, 28.xi.1992, J. Rawlins et al., Malaise trap. ECUADOR: Napo: Yasuni Biological Research Station,.67°S, 76.39°W, 220m, 1♀, 3–20.xi.1998, T. Pape, B. Viklund, Malaise trap; Sucumbios: Sacha Lodge, 0.5°S, 76.5°W, 270m, 1♀, 21–31.x.1994, P. Hibbs, Malaise trap. PANAMA: Canal Zone: Barro Colorado Island, 9.17°N, 79.83°W, 1♀, 20–27.i.1993, J. Pickering, Malaise trap #736, 1♀, 30.iii–6.iv.1994, J. Pickering, Malaise trap #2417, 1♀, 4–11.viii.1993, J. Pickering, Malaise trap #1683, 1♀, 7–14.vii.1993, J. Pickering, Malaise trap #974, 1♀, 7–14.x.1992, J. Pickering, Malaise trap #955; Darien: Cruce de Mono, 7.92°N, 77.62°W, 4♀, 6.ii– 4.iii.1993, R. Cambra, J. Coronado, Malaise trap.