Atherigona (Acritochaeta) orientalis Schiner, 1868

Couri, Marcia S., Pont, Adrian C. & Daugeron, Christophe, 2010, The Muscidae (Diptera) of New Caledonia 2503, Zootaxa 2503 (1), pp. 1-61 : 15-17

2. Atherigona (Acritochaeta) orientalis Schiner

Atherigona orientalis Schiner, 1868: 295 . Holotype female, Nicobar Islands, Tellnschong, in NMW (type seen by Pont, 1986b: 18).

Atherigona orientalis ; Shinonaga et al., 1991: 330; Pont, 1992: 56.

Diagnosis. A species exhibiting some intraspecific variation in colour (see Pont, 1986b). Frontal vitta yellow to orange, at least above lunule. Palpus brown, often orange in basal half, or even wholly yellow in some males. Male palpus elongate and flattened; female palpus large and band-shaped. Presutural acrostichal setulae in 4– 5 rows. Scutum grey dusted, without vittae or with three rather faint and poorly defined brown vittae. Scutellum grey dusted. Pleura and abdomen black in ground-colour. Male without hypopygial prominence and trifoliate process; male terminalia as in Figs 41–42 and female ovipositor as in Figs 15–16 and 45–47 (all in Pont, 1986b). See also Pont & Magpayo (1995).

Material examined: MNHN: New Caledonia: Nouméa : v.1955, 3 ♀, J. Rageau .

NSMT: New Caledonia: Thio : 50 km east of Nouméa, 18.ii.1978, 1 ♀ ( Shinonaga et al., 1991) .

CNC: New Caledonia: Mont Ouen : Toro: i–v. 1972, 1 ♀, P. Cochereau ( Pont, 1992: 56) .

BPBM: New Caledonia: Anse Vata : 27.x.1958, 4 ♀ ; 1.xi.1958, 4 ♀ ; 2.xi.1958, 1 ♂, 2 ♀; 9.xi.1958, 1 ♀; 15.xi.1958, 9 ♀; 22.xi.1958, 7 ♀; 23.xi.1958, 1 ♂, 13 ♀; fly trap (bait: kidney extract), 22.x.1958, 1 ♀; all C.R. Joyce. Beach near Ponerihouen : 25.xi.1958, 1 ♂ , C.R. Joyce. Between Plum and Yaci : 25.iii.1968, 1 ♀ , J.L. Gressitt & T.C. Maa. In mts up Boulari R. [Road]: 3–4.xi.1958, 1 ♀ , C.R. Joyce. Nouméa: 22–23.xi.1963, 1 ♂, R. Straatman. Thio: 11.xi.1958, 1 ♀, C.R. Joyce. Tiwaka River : 27.xi.1958, 1 ♂ , C.R. Joyce. Tontouto: 0–50 m, 4.ii.1980, 1 ♀, N.L.H. Krauss. Loyalty Islands: Lifou: We , 30–31.i.1962, 1 ♂ , N.L.H. Krauss.

Comments. First recorded from New Caledonia by Shinonaga et al. (1991), based in one female specimen. The species belongs to the subgenus Acritochaeta .

Distribution. American Samoa, Australia (NSW, NT, Qld, WA), Belau, Bonin Is, Easter Island, Fiji, French Polynesia, Guam, Hawai‘ian Is, Indonesia (Western New Guinea, Maluku), Johnston Atoll, Kiribati, Marcus I., Marshall Is, Micronesia, New Caledonia ( New Caledonia, Loyalty Is), Niue, Northern Marianas, Palmyra Atoll, PNG (Bismarck Arch., PNG), Rennell I., Solomon Is, Tonga, Vanuatu, Volcano I., Wake I., Western Samoa; pantropical.

Figures

FIGURES 1–16. 1–4. Atherigona bidens Hennig, male terminalia. 1. Hypopygial prominence, dorsal view. 2. Male hypopygial prominence, lateral view. 3. Male trifoliate process, posterior view. 4. Male trifoliate process, lateral view. 5– 8. Atherigona oryzae Malloch, male terminal. 5. Hypopygial prominence, dorsal view. 6. Hypopygial prominence, lateral view. 7. Trifoliate process, posterior view. 8. Trifoliate process, lateral view. 9–12. Atherigona simplex (Thomson), male terminalia. 9. Hypopygial prominence, dorsal view. 10. Hypopygial prominence, lateral view. 11. Trifoliate process, posterior view. 12. Trifoliate process, lateral view. 13–16. Atherigona tibiseta Malloch, male terminalia. 13. Hypopygial prominence, dorsal view. 14. Hypopygial prominence, lateral view. 15. Trifoliate process, posterior view. 16. Trifoliate process, lateral view. Scale bar: 0.1mm