Tydeus

Akbari, Ali, Irani-Nejad, Karim Haddad, Khanjani, Mohammad, Arzanlou, Mahdi & Kaźmierski, Andrzej, 2015, Tydeus shabestariensis sp. nov. and description of the male of Neopronematus sepasgosariani (Acari: Tydeoidea), with a key to the Iranian species of Tydeus, Zootaxa 4032 (3), pp. 264-276 : 270

Key to the female Iranian species of Tydeus (based partially on the keys Kaźmierski 1998)

1 Dorsal idiosomal setae similar in shape, none of them clavate or spatulate........................................ 2

- Dorsal idiosomal setae different in shape; anterior setae slender, posterior setae clavate or spatulate................... 11

2 Cheliceral stilettos as long as palpal tarsus or longer than palpal tarsus........................................... 3

- Cheliceral stilettos distinctly shorter than palpal tarsus....................................................... 4

3 Cheliceral stilettos as long as palpal tarsus............................................... electus Kuznetzov, 1973

- Cheliceral stilettos longer than palpal tarsus........................................ darekiwani Sadeghi et al. 2012

4 Dorsal idiosomal setae long, especially “caudal” setae; seta f1 reaches the base of h1 ................................ 5

- Dorsal idiosomal setae not as long; seta f1 does not reach the base of h1 .......................................... 6

5 Bothridial setae (bo) shorter than most dorsal body setae....................... caryae Khanjani & Ueckermann, 2003

- Bothridial setae (bo) longer than all dorsal body setae........................................................................ longisetosus (El Bagoury & Momen, 1988) junior homonym of longisetosus Kuznetzov & Zapaletina, 1972

6 Ventrally, between setae mtα, the striae form V-pattern........................................................ 7

- Ventrally, between setae mtα, the striae run longitudinally.............. kabutarahangensis Khanjani & Ueckermann, 2003

7 Dorsal idiosomal setae relatively broadly lanceolate; setae f1 as long as 1/3 of distance f1-h1 ....... gloveri ( Ashmead, 1879)

- Dorsal idiosomal setae at most narrowly lanceolate; setae f1 as long as 1/2 of distance f1-h1 or longer................... 8

8 Dorsal idiosomal setae of moderate length; f1 as long as 1/2 of distance f1-h1; solenidion ωI as long as than 1/2 of width of tar- sus I.............................................................................. kochi Oudemans, 1928

- Dorsal idiosomal setae long; f1 longer than 1/2 of distance f1-h1; solenidion ωI shorter than 1/2 of width of tarsus I....... 9

9 Setae ps1 less than half length of setae f and h ............................................ shabestariensis sp. nov.

- Length of setae ps1 similar to length of setae f and h ........................................................ 10

10 Gnathosoma hidden under aspidosoma and only its very distal part visible from above............ inclutus Livshitz, 1973

- Gnathosoma strongly protrudes before anterior projection of aspidosoma.................. mississippiensis Baker, 1970

11 Three pairs of posterior opisthosomal setae (h1, h2, ps1) clavate................. caudatus ( Dugés, 1834) sensu Baker 1970

- Five or six pairs of posterior setae clavate or spatulate...................................................... 12

12 Six pairs of posterior opisthosomal setae (e1, f1, f2, h1, h2, ps1) narrowly clavate............... calabrus ( Castagnoli, 1984)

- Only five pairs of posterior opisthosomal setae (f1, f2, h1, h2, ps1) spatulate....................................... 13

13 Sagittal striation between setae h1 form an inverted V- pattern......... meshkinensis André, Ueckermann & Rahmani, 2010

- Almost transverse striae between setae h1 .............................................. californicus ( Banks, 1904)