Fissicepheus Balogh & Mahunka 1967
Creators: name: Zheng, Li-Hao
name: Chen, Jun
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Sarcoptiformes
Otocepheidae
Fissicepheus

description: Key to the known species of the genus Fissicepheus.
1. Co.ag absent........................................................ F. (Psammocepheus.) amabilis Aoki, 1970
- Co.ag present........................................................................................ 2
2. Ten pairs of notogastral setae............................................................................ 3
- Fourteen pairs of notogastral setae....................................................................... 23
3. Anterior end of lamella conspicuously widened, petal-shaped................................................... 4
- Anterior end of lamella not widened....................................................................... 5
4. Notogastral setae with fine tips......................................... F. (Fissicepheus.) mitratus Mahunka, 1971
- Notogastral setae dilated......................................................... F. (F.) coronarius Aoki, 1967
5. Developed tubercles present behind prodorsal condyles.............................. F. (F.) thaiensis Mahunka, 2008
- No tubercles present behind prodorsal condyles.............................................................. 6
6. Co.nm present........................................................................................ 7
- Co.nm absent........................................................................................ 18
7. Notogastral setae bifid apically........................................... F. (F.) elegans Balogh et Mahunka, 1967
- Notogastral setae not bifid apically........................................................................ 8
8. Co.nm connected with each other......................................................................... 9
- Co.nm separated from each other........................................................................ 11
9. Spa.l fused to each other to form a brim-like structure..................................... F. (F.) vicinus Aoki, 1986
- Spa.l not fused to each other............................................................................ 10
10. Seta le inserted at tip of lamella........................................................ F. (F.) wangae sp. nov.
- Seta le inserted far from tip of lamella.............................................. F. (F.) combicondylus sp. nov.
11. Apical part of ss with strong spines...................................................................... 12
- Ss with relatively smooth margin........................................................................ 13
12. Notogastral setae strongly barbed in distal third............................................... F. (F.) aokii sp. nov.
- Notogastral setae minutely barbed uniformly........................................ F. (F.) corniculatus Aoki, 2009
13. Spa.l fused to each other to form a brim-like structure........................................................ 14
- Spa.l not fused to each other............................................................................ 16
14. Surface of femora I–IV and trochanters III–IV densely granulated.......................... F. (F.) confragosus sp. nov.
- Surfaces of legs without granules........................................................................ 15
15. Co.pm small, connected by a transverse ridge........................................... F. (F.) gracilis Aoki, 2006
- Co.pm well developed, transverse ridge absent........................................ F. (F.) clavatus (Aoki, 1959)
16. Interlamellar, notogastral and ano-adanal setae dilated in medial part......... F. (F.) striganovae Ermilov et Anichkin, 2014
- Interlamellar, notogastral and ano-adanal setae with fine tips.................................................. 17
17. Notogaster without a chitinous transversal band anterior to seta h 2.................... F. (F.) subclavatus Mahunka, 1971
- Notogaster with a chitinous transversal band anterior to seta h 2............ F. (F.) takenouchiensis Fujikawa et Nishi, 2013
18. All notogastral setae dilated and leaf-like............................................... F. (F.) nakanei Aoki, 1986
- Notogastral setae not leaf-like.......................................................................... 19
19. Co.pm absent........................................................................................ 20
- Co.pm present....................................................................................... 22
20. Rostral apex deeply U-shaped incised........................................... F. (F.) steinmanni Mahunka, 1971
- Rostral apex not excised............................................................................... 21
21. Head of ss with strong spines........................................................ F. (F.) defectus Aoki, 2006
- Ss with a finely roughened head, without spines......................................... F. (F.) haradai Choi, 1986
22. Ss clavate; genital plate with 1or 2 longitudinal striae....................................... F. (F.) mitis Aoki, 1970
- Ss with a rounded head; genital plate without striae...................................... F. (F.) chinensis Wen, 1993
23. Co.pm and co.nm absent....................................................... F. (F.) claviopsis Mahunka, 1971
- Co.pm and co.nm present.............................................................................. 24
24. Seta le inserted at tip of lamella................................................ F. (F.) sitnikovae Sergienko, 1976
- Seta le inserted behind tip of lamella..................................................................... 25
25. Notogastral setae long and strongly curved....................................... F. (F.) curvisetosus Kubota, 2001
- Notogastral setae short and almost straight...................................... F. (F.) ornithorrhynchus Wen, 1993
description: Published as part of Zheng, Li-Hao & Chen, Jun, 2018, Taxonomic study on the genus Fissicepheus (Acari: Oribatida: Otocepheidae) from China, pp. 539-550 in Zootaxa 4410 (3) on pages 548-549, DOI: 10.11646/zootaxa.4410.3.7, http://zenodo.org/record/1221848