Japanagromyza Sasakawa (Diptera: Agromyzidae) of Africa Author Lonsdale, Owen text Zootaxa 2013 3709 5 445 460 journal article 10.11646/zootaxa.3709.5.3 7049fe72-a637-4081-b2df-f59a5c15b7ba 1175-5326 222571 0EAE3D84-E1E8-442D-A9BD-3E7046A2A706 Japanagromyza nigrihalterata Spencer Figs 28–34 Agromyza nigrihalterata Spencer 1959: 246 . Japanagromyza nigrihalterata . Spencer 1960: 17. Description. Wing length 2.2mm (♂), 3.0mm(♀). Length of ultimate section of vein CuA1 divided by penultimate section: 0.8; vein r-m at or slightly past midpoint of cell dm. Eye height divided by gena height approximately 10.0–10.5. Lunule semicircular. Face with slight medial carina in male. Clypeus glossy with anterior margin relatively straight. FIGURES 22–24. Japanagromyza nesiota sp. n. , male genitalia; 22: external genitalia, ventrolateral; 23: hypandrium, ventral; 24: phallus, left lateral. Figs 25–27: J. salicifolii (Collin) , male genitalia: 25: ejaculatory apodeme; 26: genitalia excluding phallus, ventral; 27: phallus, left lateral. Chaetotaxy: Prescutellar acrostichal seta 2/5–3/5 length of posterior dorsocentral. Approximately 10 rows of acrostichal setulae; setulae present between anterior and posterior dorsocentrals in male, row bare in female. Female with well developed setula in front of anterior dorsocentral (approximately ¼ length). Intra post-alar setulalike. Katepisternum with two smaller additional setae. Small fore tibial seta present in female. Mid femur without long posterodistal setae. Colouration: Setae dark brown, setulae with brown tint. Halter black with apical surface white, with sharp, well-defined boundary between both colour regions. Calypter margin white and hairs light brown. Body colour dark brown with nearly indistinct greenish shine in male. FIGURES 28–34. Japanagromyza nigrihalterata Spencer , male genitalia; 28: external genitalia, posterior; 29: external genitalia, anterior; 30: external genitalia, left lateral; 31: external genitalia, ventral; 32: ejaculatory apodeme; 33: phallus, epiphallus and base of phallapodeme, left lateral; 34: internal genitalia, ventral. Genitalia: Subepandrial sclerite composed of one pair of large, bare plates joined by narrow dorsomedial bridge. Surstylus short, rounded, entirely fused to epandrium and with anterior margin curved inwards; with circular patch of very short setae on inner face. Cercus tapered on distal 2/5, short setose; one pair of weak, floating sclerites in perianal region. Phallophorus short, separate from basiphallus. Basiphallus with large left lateral / dorsal sclerite that is most heavily sclerotized apically; right lateral surface with two smaller floating sclerites, with dorsal-most margin exceeding mesophallus; mesophallus large, bulbous and smooth, subequal in size to distiphallus; apex of ejaculatory duct adjoining mesophallus thickened and sclerotized. Distiphallus with wide ventromedial plate that joins thick, basal C-shaped stem; apex of stem joined to small, bilobed, internally spinulose and thin-walled chamber. Ejaculatory apodeme with well defined stem and basal process; blade clear and subovate with dark medial rib with transverse striations; pileus ejaculatorius broad; base of stem and pileus extending along base of duct. Host. Unknown. Distribution. Kenya , Rwanda . Holotype . KENYA . Meru, vii.1943 , van Someren (1♀, BMNH). Additional material examined: KENYA . Nairobi, 5500ft ., 9–13.xii.1970 , A.E. Stubbs, B.M. 1972-211 ( 1♂ , BMNH). Comments. Males were previously unknown for Japanagromyza nigrihalterata . The male genitalia are figured here for the first time, although the phallus was unfortunately misplaced following illustration.