Coleolaelaps massoumii, Khanjani, Mohammad, Ghaedi, Behnaz & Ueckermann, Rd. A., 2013

Khanjani, Mohammad, Ghaedi, Behnaz & Ueckermann, Rd. A., 2013, New species of Hypoaspis Canestrini and Coleolaelaps Berlese (Mesostigmata: Laelapidae) associated with Polyphylla olivieri Castelnau (Coleoptera: Scarabaeidae) in Iran, Zootaxa 3745 (4), pp. 469-478 : 473-476

Coleolaelaps massoumii n. sp.

( Figs 11–20 )

Diagnosis. This species can be recognised by the following combinations of characters: (1) Setae r1 absent; (2) dorsal shield with deep lateral incisions; (3) Leg IV longer than 1850 Μm; (4) setae z3 present; (5) Genu IV with one pl seta.

Female (n = 7). Length of dorsal shield 1425 (1300–1475), width (at level of r3) 815 (718–850).

Dorsum ( Fig. 11 ). Dorsal shield with 46 pairs of setae, dorso-central setae rather shorter than lateral setae. All dorsal setae smooth. Dorsal shield coarsely reticulate marginally, with medio-lateral incisions. Some lateral setae undulate, particularly posterior opisthosomal setae, setae s4, z4, S1, S4, S5, Z2 and Z4 longest. Peritremal shield not fused with dorsal shield anteriorly. Peritreme reaching base of setae z3. Length of dorsal setae j1 90 (88–93), j2 189 (188–218), r5 125 (110–180), r6 113 (110–138), R1 112 (110–132), R2 130 (130), R3 153 (138–170), R4 142 (130– 155), Z5 125 (230–245).

Gnathosoma ( Figs 12–15 ). Hypostomal groove with seven rows of denticles, each row with 2–12 denticles. Hypostomal setae (h1 – 3 and pc) almost equal in length 75–80 ( Fig. 13 ). Anterior margin of epistome truncate distally with two pointed processes, with 18 or more denticles along margins ( Fig. 15 ). Fixed cheliceral digit with seven small, two large teeth and a small pilus dentilis, associated with posterior large tooth ( Fig. 12 ), length of fixed digit 118 (113–125) and length of movable digit 110 (110–118). Palp apotele two-tined ( Fig. 14 ).

Venter ( Fig. 16 ). Tritosternum biramous, laciniae pilose, length of tritosternum 299 (295–303) ( Fig. 16 ). Length of sternal shield 235 (231–245), width (anterior to st3) 185 (173–192); reticulate, with three pairs of sternal setae, a pair of round pores on anterior margin of sternal shield and a pair of round or oval pores posterior to st2. Setae st4 on soft integument. Metasternal shields with a pore ( Fig. 16 ). Length of sternal setae st1 135 (113–155), st2 137 (127–150), st3 141 (138–160), st4 137 (135–171), st5 133 (125–150). Width of genital shield (st5 – st5) 138 (130–138), genital shield long, tongue-shaped and reticulate, setae st5 not on genital shield, setae st 1–5 in longitudinal line; distances between sternal setae: st1 – st1 103 (93–103), st2 – st2 133 (125–133), st3 – st3 168 (158– 178), st4 – st4 155 (150–165), st5 – st5 138 (130–138) and st1–st3 143 (140–153). Anal shield pear shaped, length 135 (110–135), width 100 (100–125), with three anal setae, post-anal longer than para-anals ( Fig. 16 ). Peritremal shield free, posterior extention with very small incision distally ( Fig. 16 ). Opisthogaster with 15 pairs of smooth setae, length of opisthogastric setae: JV1 113 (110–135), JV2 115 (110–138), JV3 203 (200–245), JV4 345 (280– 370), JV5 255 (250–380), ZV1 130 (126–149), ZV2 148 (135–175), ZV3 150 (143–160), ZV4 245 (245–293), ZV5 310 (270–315) and JV5, JV4, ZV4 and ZV5 longest.

Spermatheca ( Fig. 17 ). Sacculus almost quadrate, ramus very short and tube–like, with tubulus slender and long, with large opening on coxae III.

Legs ( Figs 18–20 ). Length of leg I (coxae to tip of ambulacrum) 1357 (1113–1450), leg II 1245 (1125–1265), leg III 1503 (1400–1513) and leg IV 1938 (1850–1965). Leg chaetotaxy: Leg II: femur 2, 3/1, 2/2, 1, genu 2, 3/1, 2/ 1, 2, tibia 2, 2/1, 2/1, 2, tarsus 3, 3/2, 3/2, 3 + md + mv. Leg III: femur 1, 2/1, 1/0, 1, genu 1, 2/1, 2/1, 2, tibia 1, 2/1, 1/1, 2, tarsus 3, 3/2, 3/2, 3 + md + mv. Leg IV: femur 1, 2/1, 1/1, 0, genu 2, 2/0, 3/0, 2, tibia 2, 1/1, 3/1, 2, tarsus 3, 3/2, 3/2, 3 + md + mv. Leg IV longest, longer than dorsal shield. Leg I slender, with ambulacral claws smaller than those of other legs. Leg II stouter than other legs. Length of macrosetae: femur II pd1 162 (175–150), femur III ad1 165 (200–241), femur IV ad1 350 (256–410); genua IV with two macrosetae, genu IV [ad1 315 (313–386), ad2 251 (212–260)] and tarsus IV with four macrosetae [mv1a1 setae ad2 (300–305), pd2 setae 300 (325–333), ad3 setae 327 (363–350)] and pd3 setae 356 (378–375), ( Fig. 18–20 ) and tarsi I–III without macrosetae.

Remarks. According to Karg (1979, 1999) and Costa & Hunter (1970), this species resembles C. agrestis (Berlese) in having one pl seta on genu IV, the same hypostomal details, shape of sternum, genital shield and metapodal elements and one posterolateral seta on genu IV. However, C. massoumii n. sp. differs from the former by: opisthogastric setae longer than those of the latter; seta j6 reaching pass the base of setae J 1 in the new species but not reaching it in latter; setae J2 and J3 reaching pass the base of setae J3 and J4 respectively in the former opposed to not reaching them in the second species; dorso-central setae extend to base of setae next behind but shorter in C. agrestis ; macrosetae on tarsus IV longer than those of former, tarsus IV with four long macrosetae in new species but only one in C. agrestis ; genu IV with two macrosetae versus one; femur III with one macrosetae versus no macrosetae in C. agrestis ; anterior margin of the epistome with 18 lateral denticles and two larger central ones in new species whereas no lateral denticles in H. agrestis ; C. massoumii with J1 but C. agrestis without this seta; fixed digit with two large denticles in C. massoumii with only one in C. agrestis ; dorsum with 46 pairs of setae in the new species versus 43 in the C. agrestis ; meta–podal elements three in new species whereas two in C. agrestis ; deutosternal groove with seven rows of denticles in the C. massoumii while six in C. agrestis .

Etymology. This species is named in honour of Prof. Lotfali Massoumi, Department of Biology of Mohaghegh Ardebili University, Ardebil, Iran, who kindly helped Ms. Behnaz Ghaedi during her MSc degree at Ardebil University, Ardebil Province.

Type material. Holotype female and six paratype females from Polyphylla olivieri Castelnau ( Coleoptera : Scarabaeidae ) collected from cherry trees, Hamadan, Iran, 31 July 2007, coll. M. Khanjani.

Figures

FIGURES 11 – 17. Coleolaelaps massoumii n. sp., female. 11. Dorsal idiosoma; 12. Chelicera; 13. Hypostome; 14. Palp tarsal claw; 15. Epistome; 16. Ventral idiosoma; 17. Spermatheca.

FIGURES 18 – 20. Coleolaelaps massoumii n. sp., female. 18. Leg II; 19. Leg III; 20. Leg IV.