Thailand Agromyzidae (Diptera) — 2 Author Sasakawa, Mitsuhiro text Zootaxa 2013 3746 4 501 528 journal article 10.11646/zootaxa.3746.4.1 2c47b519-8bb0-41d2-a4ab-3abec949499e 1175-5326 216905 F34E3BEA-CABE-4595-B1EB-40CC4802A942 Key to Thailand species of Ophiomyia 1. Calypter with fringe white............................................................................... 2 - Calypter with fringe black...............................................................................4 2. Vibrissal fasciculus developed in male..................................................................... 3 - Vibrissal fasciculus lacking; frons as wide as eye; gena 1/10–1/20 as high as eye, with normal vibrissa on anterior angle; ultimate section of CuA1 2/3 as long as penultimate section (Orient, Pacific, Australia , South Africa ; host plant: Vernomia cinerea )................................................................................ O . atralis (Spencer, 1961) 3. Facial carina narrow but distinct; frons subequal to width of eye; gena 1/4 as high as eye; ultimate section of CuA1 about 3/5 as long as penultimate section; distiphallus bulbous distally (Spencer 1977: figs 91, 92) (Orient, Pacific, Australia ; Japan ; host plants: Goodenia , Scaevola spp.)..................................................... O . cornuta Meijere (1910) - Facial carina broad, spindle-shaped below antennal bases; frons 1.5 times as wide as eye, gena 1/5 as high as eye; ultimate sec- tion of CuA1 as long as penultimate; distiphallus striated distally.................................. O . striata sp . nov . 4. Small species, with wing length 1.3–1.5 mm ; vibrissal fasciculus present in male; gena 1/5–1/7 as high as eye; ultimate section of CuA1 almost equal to penultimate section; surstylus with nine spines; distiphallus with a clavate processs on inner left side ( Taiwan , Thailand ).......................................................... O . setituberosa Sasakawa (1972) - Larger, wing length 1.6–2.9 mm ; vibrissal fasciculus absent in male............................................. 5 5. Wing less than 2.5 mm in length; gena narrow, 1/6–1/8 as high as eye............................................ 6 - Wing length 2.5–2.9 mm ; gena 1/5 as high as eye; ultimate section of CuA1 1/2 as long as penultimate (Orient; Japan ; fruit- feeder of Ricinus sp.)................................................................ O . ricini (Meijere, 1922) 6. First antennal flagellomere with long pile; surstylus with about 35 spines; hypandrium with basal apodeme long; distiphallus with more than 65 strong spines on one membranous side (Orient, Australia ; Japan ).......... O . conspicua (Spencer, 1961) - First antennal flagellomere minutely pilose................................................................. 7 7. Basiphallus with lateral sclerites connected broadly at middle.................................................. 8 - Basiphallus with lateral sclerites largely isolated............................................................. 10 8. Fore tibia with an external bristle; surstylus with about 50 spines; distiphallus with spinulose lobes laterally ( Thailand , Vanu- atu)......................................................................... O . phalloides Sasakawa (2004) - Fore tibia without external bristle......................................................................... 9 9. Ocellar triangle with ventral tip extending to level of second ors ; face with carina narrowly distinct, extending to oral margin; surstylus with about 28 spines; distiphallus with whip-like process on left lateral lobe.............. O . flagellata sp . nov . - Ocellar triangle with ventral tip extending almost to level of first or i; face without distinct carina; distiphallus broadened dis- tally (Orient, Pacific, Australia , Africa; Japan ; stem-miner on Glycine , Phaseolus spp. etc.)....... O . phaseoli (Tryon, 1892) 10. Surstylus with spines more than 30....................................................................... 11 - Surstylus with 15–17 spines; distiphallus with basal lobe surrounding as ring and spinulose on lateral side (Orient, Australia , Africa; Japan ; stem-miner on Glycene, Phaseolus spp. etc.).......................... O . centrosematis (Meijere, 1940) 11. Distiphallus with lobe sparsely spinulose (Orient, Australia )................................ O . rotata (Spencer, 1965) - Distiphallus with four lobes, dorsal lobe smaller than ventral lobe, spinulose internally.............. O . quadrifida sp . nov .