Ommatidiotus Spinola 1839
Creators: name: Park, Jaekook
name: Jung, Sunghoon
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Caliscelidae
Ommatidiotus

description: Key to the species of genus Ommatidiotus Spinola in Northeast Asia (modified from Horváth, 1905 and Anufriev & Emeljanov, 1988)
MALE
1. Coryphe elongated, length more than 1.5 times longer than width............................................... 2
- Coryphe not elongated, length almost as long as width....................................................... 6
2. Coryphe almost 1.5 times longer than width................................................................ 3
- Coryphe more 2 times longer than width.................................................................. 4
3. Coryphe less 1.5 times longer than width, anterior margins relatively pointed at apex...... O. japonicus Hori (Japan, China)
- Coryphe more 2 times longer than width, anterior margins rounded at apex......... O. longiceps Puton (Mongolia (North))
4. Metope with median carinae whitish, contrasted with background.............................................. 5
- Metope with median carinae blackish, concolorous with background.. O. koreanus Matsumura (North Korea, Russia, Japan)
5. Forewing with veins brown, contrast with background.................... O. acutus Horváth (China, Mongolia, Russia)
- Forewing with veins concolorous with background.................... O. pseudolongiceps Meng, Qin & Wang (China)
6. Forewing with blackish markings on costal area, distinctly contrast with background............................... 7
- Forewing without blackish markings on costal area, concolorous with background.......... O. inconspicuus Stål (Russia)
7. Body size more than 3.0 mm (including forewing)........................................................... 8
- Body size less than 3.0 mm (including forewing)............................ O. dashdorzhi Dlabola (China, Mongolia)
8. Aedeagus in posterodorsal view, lateral processes relatively long, protruding downward............................. 9
- Aedeagus in posterodorsal view, lateral processes relatively short, protruding upward....... O. nigritus Matsumura (Russia)
9. Aedeagus in posterodorsal view lateral processes reaching at base, not connected............................................................................................. O. dissimilis (Fallén) (North Korea *, Transpalearctic)
- Aedeagus in posterodorsal view lateral processes not reaching at base, connected by short transverse cross-piece shaped............................................................................. O. sylvaticus Emeljanov (Russia)
FEMALE
1. Coryphe elongated, length more than 1.5 times longer than width............................................... 2
- Coryphe not elongated, length almost as long as width....................................................... 6
2. Coryphe almost 1.5 times longer than width................................................................ 3
- Coryphe more 2 times longer than width.................................................................. 4
3. Coryphe less 1.5 times longer than width, anterior margins relatively pointed at apex........... O. japonicus Hori (Japan)
- Coryphe more 2 times longer than width, anterior margins rounded at apex......... O. longiceps Puton (Mongolia (North))
4. Metope with median carinae whitish, contrasted with background.............................................. 5
- Metope with median carinae blackish, concolorous with background.............. O. koreanus Matsumura (North Korea)
5. Forewing with veins brown, contrast with background.................... O. acutus Horváth (China, Mongolia, Russia)
- Forewing with veins concolorous with background.................... O. pseudolongiceps Meng, Qin & Wang (China)
6. General coloration of body light brown to brown, dorsal and ventral colorations contrasted.......................... 7
- General coloration of body black, dorsal and ventral colorations not contrasted............ O. nigritus Matsumura (Russia)
7. Coryphe with longitudinal dark stripes with a narrow reddish stripe medially, contrasted bicolored..................... 8
- Coryphe with longitudinal stripes broad brown or reddish medially, unicolored.................................... 9
8. Anterior margins of coryphe round............................... O. dissimilis (Fallén) (North Korea *, Russia, Japan)
- Anterior margins of coryphe slightly angulated..................................... O. inconspicuous Stål (Russia)
9. Body size less than 4.5 mm (including forewing)........................................................... 10
- Body size more than 4.5 mm (including forewing)............. O. karafutonis Matsumura stat. rev. (North Korea, Russia)
10. Cubital and median cells of forewing without stripes................................. O. dashdorzhi Dlabola (China)
- Cubital and median cells of forewing with longitudinal reddish-brown stripes........... O. sylvaticus Emeljanov (Russia)
description: Published as part of Park, Jaekook & Jung, Sunghoon, 2024, The genus Ommatidiotus Spinola (Hemiptera: Auchenorrhyncha: Caliscelidae) from the Korean Peninsula and neighboring countries, pp. 172-190 in Zootaxa 5496 (2) on pages 187-188, DOI: 10.11646/zootaxa.5496.2.2, http://zenodo.org/record/13346536