Gaeolaelaps,

Vatankhah, Farzaneh, Nemati, Alireza, Esfandiari, Mehdi & Shishehbor, Parviz, 2016, Description of a new species of Gaeolaelaps (Acari: Laelapidae) from Iran, with a key to world species of the genus with short peritremes, Zootaxa 4121 (5), pp. 566-574: 571-572

publication ID

http://doi.org/10.11646/zootaxa.4121.5.6

publication LSID

lsid:zoobank.org:pub:C5179C12-2B14-4224-9C3D-F703EA342698

persistent identifier

http://treatment.plazi.org/id/E648175A-FFAA-FFC2-E8BB-FB55FA6FCBF3

treatment provided by

Plazi

scientific name

Gaeolaelaps
status

 

Key to the Gaeolaelaps  species with short peritremes

1. Peritreme very short, reaching to anterior level of coxa III.................................................... 2

- Peritreme longer, reaching to middle or anterior margin of coxa II.............................................. 7

2. Peritreme extending to the anterior margin of coxa III....................................................... 3

- Peritreme extending to the mid-level of coxa III............................................................ 4

3. Anal shield with straight posterior margin; post-anal seta twice as long as para-anal setae; peritrematal plate extending anteriorly to anterior level of coxa II; dorsal shield with 38 pairs of acicular setae................. G. rhizotrogi ( Mašán, 1998) 

- Anal shield suboval with nearly acute posterior angle; post-anal seta nearly as long as para-anal setae; peritrematal plate extending anteriorly to mid-level of coxa I; dorsal shield with 37 pairs of setae.............. G. dubininae ( Sklyar, 2012) 

4. Peritreme extending to the mid-level of coxa III; dorsal shield with 39 pairs of setae............................... 5

- Peritreme very short and reaching to anterior level of coxa IV; dorsal shield with 37 pairs of setae.................... 6

5. Peritrematal shield extending to posterior level of coxa II, free from dorsal shield; sternal shield bearing only two pairs of lyrifissures; fixed digit of chelicera with two teeth; dorsal soft cuticle not hypertrichous (6–8 pairs of setae)................................................................................................. G. heteroceri Trach, 2016 

- Peritrematal shield extending to anterior level of coxa I, fused with dorsal shield near setae z 1; sternal shield bearing three pairs of lyrifissures; fixed digit of chelicera with four to six teeth; dorsal soft cuticle hypertrichous (32–37 pairs)........................................................................................... G. carabidophilus Trach, 2012 

6. Dorsal soft cuticle not hypertrichous (with three pairs of setae); sternal shield with two pairs of lyrifissures; with abnormal leg chaetotaxy, e.g.: trochanter I with five, genu III-IV with eight and tibia IV with nine setae; dorsal shield oval shape (273 – 27 7 long)......................................................................... G. sevastianovi Trach, 2016 

- Dorsal soft cuticle hypertrichous (with 32–33 pairs of setae); sternal shield with three pairs of lyrifissures; with normal leg chaetotaxy; dorsal shield greatly elongate (416–441 long)................................. G. khaustovi Trach, 2016 

7. Dorsal shield with 41 pairs of setae; epigynal shield much longer than wide, length/width= 3: 1; anal shield subtriangular and longer than wide; dorsal setae nearly equal in length (28–33); idiosoma 400–480 long, 180–220 wide..................................................................................................... G. macra ( Karg, 1978) 

- Dorsal shield with less than 41 pairs of setae; epigynal shield not as above....................................... 8

8. Anal shield nearly rounded and wider than long (as in G. orbiculatus Nemati & Mohseni, 2013  ) or with semi-circular anterior margin, straight postero-lateral margins, and a pair of minute angular lateral projections (as in G. farajii Nemati & Mohseni, 2013  ).............................................................................................. 9

- Anal shield subtriangular and without a pair of minute angular lateral projections................................ 10

9. Anal shield nearly rounded and wider than long; epistome denticulate with a two tined medioventral process projecting beyond the anterior margin; idiosoma 489–491 long, 270–276 wide.................... G. orbiculatus Nemati & Mohseni, 2013 

- Anal shield with semi-circular anterior margin, straight postero-lateral margins, and a pair of minute angular lateral projec- tions; epistome denticulate without such appendage; idiosoma 408–439 long, 205–218 wide................................................................................................... G. farajii Nemati & Mohseni, 2013 

10. Apart from dorsal setae j 1 and Z 5, all dorsal setae extremely reduced (5–7 long); Z 5 three times the length of J 5; dorsal shield with 38 pairs of setae, 21 pairs on podonotal part of dorsal shield (lacks s 1) and 17 pairs on opisthonotal region of dorsal shield; idiosoma 430–450 .............................................................. G. gleba ( Karg, 1979) 

- Dorsal setae not extremely reduced; Z 5 not as above....................................................... 1 1

11. Dorsal shield with 37 pairs of setae..................................................................... 12

- Dorsal shield with 38–39 pairs of setae.................................................................. 14

12. Podonotal part of dorsal shield with 20 or 22 pairs of setae.................................................. 13

- Podonotal part of dorsal shield with 19 (lacks z 3, s 1 and r 3) and opisthonotal region of dorsal shield with 18 pairs of setae (R 5 located on dorsal shield between S 4–5); without R series on lateral cuticle; idiosoma 420–460 .. G. vertisimilis ( Karg, 1994) 

13. Podonotal part of dorsal shield with 20 (lacks s 1–2, and has r 2–5) and opisthonotal region of dorsal shield with 17 pairs of setae (with Px 1–2); opisthonotal region wider than podonotal part; with R 1–2 and R 4 on lateral cuticle; idiosoma 350–360 ................................................................................... G. verticis ( Karg, 1979) 

- Podonotal part of dorsal shield with 22 pairs of setae, with complete s -series; opisthonotal region of dorsal shield with 15 pairs of setae (without Px 1–2); podonotal part of dorsal shield wider than opisthonotal region; idiosoma 483–540 ........................................................................................... G. zhoumanshuae ( Ma, 1997) 

14. Dorsal shield with 38 pairs of setae..................................................................... 15

- Dorsal shield with 39 pairs of setae..................................................................... 16

15. Dorsal seta z 3 present, dorsal shield surface smooth; with very thin peritrematal plate, post-stigmatic plate narrow and expanded posteriorly to surround coxa IV........................................ G. orientalis ( Hafez et al., 1982) 

- Dorsal seta z 3 absent; dorsal shield surface with reticulated pattern posterior to J 1; post-stigmatic plate small and extended to mid-level of coxa IV.................................................... G. lenis Vatankhah & Nemati  sp. nov.

16. Epigynal shield extending close to anal shield, length/width nearly 3: 1; iv 2 slit-like; J 2 located well laterad J 1 ......... 17

- Epigynal shield not extending close to anal shield, length/width nearly 2: 1; iv 2 pore-like; J 2 located behind of J 1 ....... 18

17. Epigynal shield as wide as anal shield; z 3 absent; with r 2–5; margin of epistome like a pointed roof and serrate, Z 5 = 45–52; idiosoma 650–670 .................................................................. G. cerata ( Karg, 1982) 

- Epigynal shield distinctly wider than anal shield; z 3 present; with r 2–4; margin of epistome arcuated and fine serrate, Z 5 = 50– 56; idiosoma 660–720 ................................................................ G. loksai ( Karg, 2000) 

18. Dorsal shield with one pair of zx setae, between z 4 and z 5 ................................. G. latopuga ( Karg, 2006) 

- Dorsal shield without zx setae between z 4 and z 5 .......................................................... 19

19. Dorsal shield setae long enough to reach well past the base of next posterior seta, the length of j 5 is longer than distance between j 5 and j 6, exterior margin of post-stigmatal plate with deep incision, sternal setae long enough to reach to the base of the next................................................................... G. dailingensis ( Ma & Yin, 1998) 

- Dorsal shield setae shorter, central opisthonotal setae short, sometimes reaching base of next posterior seta but never past it, the length of j 5 is shorter than distance between j 5 and j 6; sternal setae shorter and not reach to the base of the next..... 20

20. Palp tarsal claw 3 -tined.................................................. G. bregetovae ( Shereef & Afifi, 1980) 

- Palp tarsal claw 2 -tined.............................................................................. 21

21. Dorsal shield clearly broadest at level of setae r 3 (ratio of widths at r 3 /S 3 level≈ 1.5), progressively tapering until s 6, subparal- lel from s 6 to level of S 4 ........................................... G  . khajooii Kazemi, Rajaei & Beaulieu, 2014

- Dorsal shield not as above............................................................................ 22

22. Lateral margins of epigynal shield parallel or nearly so..................................................... 23

- Lateral margins of epigynal shield not parallel, widest area of epigynal shield located behind epigynal setae........... 24

23. Surface of dorsal shield smooth; sternal shield with no defined anterior margin; without podal plate posterior to coxa IV, endo- podal plate III-IV small and triangular................................... G. arabicus ( Hafez, Elbadry & Nasr, 1982) 

- Surface of dorsal shield reticulated; sternal shield with defined anterior margin; with podal plate posterior to coxa IV, endopo- dal plate III-IV elongate and angular.................................................................... 25

24. Surface of epigynal shield with polygonal reticulation; tarsus IV with two elongate pd 2–3 setae....... G. nolli ( Karg, 1962) 

- Surface of epigynal shield smooth; tarsus IV without such elongate setae...... G. mossadeghi Kavianpour & Nemati, 2014 

25. Epigynal shield with scale-like reticulation, the distance between j 5 –j 6 1.5 the length of j 5; Z 5 as long as other dorsal setae....................................................................... G. koseii ( Hafez, Elbadry & Nasr, 1982) 

- Epigynal shield with polygonal reticulation, the distance between j 5 –j 6 is thrice the length of j 5; Z 5 longer than other dorsal setae.......................................................................... G. similisetae ( Karg, 1965)