Stigmaeus

Khaustov, Alexander A., 2014, New species and new records of mites of the genus Stigmaeus (Acari: Prostigmata: Stigmaeidae) from Crimea, Zootaxa 3794 (2), pp. 237-253 : 251-252

Key to the species of the genus Stigmaeus of Crimea (females)

1. Central hysterosomal plate with 3 pairs of setae (c 1, d 1, e 1)..................................................... 2

- Central hysterosomal plate with 2 pairs of setae (c 1, d 1)...................................................... 4

2. Genua II and III with 4 and 1 setae respectively.............................................................. 3

- Genua II and III with 2 and without setae respectively................................................ S. longipilis

3. Dorsal setae thin, smooth........................................................................ S. solidus

- Dorsal setae thick, strongly barbed................................................................ S. glypticus

4. Median zonal plate entire.............................................................................. 5

- Median zonal plates paired.............................................................................. 6

5. Eyes present, suranal plate with 2 pairs of setae........................................................ S. unicus

- Eyes absent, suranal plate with 3 pairs of setae..................................................... S. elongatus

6. Eyes present......................................................................................... 7

- Eyes absent......................................................................................... 9

7. Femur II with 5 setae, dorsal plates reticulated.............................................................. 8

- Femur II with 4 setae, dorsal plates smooth.......................................................... S. pilatus

8. Auxillary plates fused with central propodosomal plate, most of dorsal setae long and pointed............... S. nikitensis

- Auxillary plates separated from central propodosomal plate, most of dorsal setae relatively short and blunt-ended...................................................................................................... S. corticeus

9. Suranal plate with 3 pairs of setae....................................................................... 10

- Suranal plate with 2 pairs of setae...................................................................... 13

10. Suranal plate entire.................................................................................. 11

- Suranal plate represented by 2 separate plates........................................................ S. planus

11. Lateral zonal plates very small, at least 4 times shorter than marginal plates...................................... 12

- Lateral zonal plates larger, about 2 times shorter than marginal plates.................................. S. pulchellus

12. Setae c 1 situated on small platelets, ratio ve / sci 1.1.............................................. S. purpurascens

- Setae c 1 situated on central hysterosomal plate, ratio ve / sci 1.4.................................... S. maraghehiensis

13. Supracoxal setae of palps (elcp) and legs I (elcl) seta-like ( Figs. 28, 31 )......................................... 14

- Supracoxal setae of palps and legs I peg-like ( Figs. 12 , 14 ).................................................. 15

14. Setae sce, d 2, e 2 long, smooth and pointed, similar to ve and c 2.................................. S. mitrofanovi sp. n.

- Setae sce, d 2, e 2 short, barbed and blunt-ended, similar to c 1and d 1.................................. S. silvestris sp. n.

15. Setae sce relatively short, blunt-ended, barbed in distal half, similar to c 1.................................. S. siculus

- Setae sce long, pointed, barbed in basal half, similar to ve ....................................... S. kuznetsovi sp. n.

Figures

FIGURES 26 – 32. Stigmaeus mitrofanovi Khaustov sp. nov., female: 26 — postocular body, 27 — anterolateral part of prodorsum showing striae with microtubercles, 28 — palpal supracoxal seta (elcp); Stigmaeus kuznetsovi Khaustov sp. nov., female: 29 — postocular body; Stigmaeus silvestris Khaustov sp. nov., female: 30 — postocular body, 31 — lateral part of prodorsum, 32 — subcapitulum.

FIGURES 12 – 13. Stigmaeus kuznetsovi Khaustov sp. nov., female: 12 – gnathosoma dorsally, 13 — subcapitulum.

FIGURES 14 – 15. Stigmaeus kuznetsovi Khaustov sp. nov., female: 14 – 15 – legs I – II, respectively.