Ishigakia

Ito, Masato & Maeto, Kaoru, 2016, Revision of Ishigakia Uchida (Hymenoptera: Ichneumonidae: Acaenitinae) from Japan, with a new species having a close relative in South Africa, Zootaxa 4136 (1), pp. 174-180 : 179

Key to the world species of Ishigakia

(modified from Wang (1983))

1. Body black.......................................................................................... 2

- Body yellowish brown................................................................................ 8

2. Fore wing without dark marking.......................................................................... 3

- Fore wing with one or two dark markings.................................................................. 5

3. Hind leg entirely black. China (Fujian and Hubei).................................................. I. nigra Wang

- Hind femur at least with a yellow part.................................................................... 4

4. Hind femur black except for the apical yellowish brown area. Taiwan and India....................... I. alecto (Morley)

- Hind femur yellowish brown except for the apical black area. Primorsky........................... I. nigripes (Meyer)

5. Fore wing with an apical dark marking. China (Jiangxi and Sichuan).......................... I. maculata Sun & Sheng

- Fore wing with two dark markings........................................................................ 6

6. Apical black marking of fore wing extending downwards; black marking below the stigma rounded. South Africa.............................................................................................. I. wahlbergi (Roman)

- Apical black marking of fore wing rounded and not extending downwards; black marking below the stigma extending to vein Cu1a ............................................................................................... 7

7. Head black; female antennal flagellum yellowish brown subapically but without a white band. Japan (Honshu)................................................................................................. I. albitarsa sp. nov.

- Head reddish brown with some black markings; female antennal flagellum with a distinct white band subapically. China (Jiangxi)............................................................................ I. alaica Sheng & Sun

8. Vein Rs&M distad to the vein cu-a intercepted near the middle................................................. 9

- Vein Rs&M opposite to the vein cu-a intercepted above the middle............................................. 10

9. Area superomedia longer than wide. China (Sichuan)............................................. I. tertia Momoi

- Area superomedia wider than long. China (Guangxi)........................................... I. rufa Sheng & Sun

10. Area basalis wider than long; areas superomedia and petiolaris divided by a transverse carina. Japan (Ryukyus).................................................................................................. I. exetasea Uchida

- Area basalis longer than wide; area superomedia confluent with area petiolaris.................................... 11

11. T1 3.2 times as long as wide; subgenital plate far beyond of the apex of metasomal tergite. China (Yunnan)...................................................................................................... I. longipedis Wang

- T1 2.5 times as long as wide; subgenital plate shorter than the apex of metasomal tergite. China (Sichuan).... I. corpora Wang