Hypoaspis (Hypoaspis) surii, 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 : 470-473

Hypoaspis (Hypoaspis) surii n. sp.

( Figs 1–10 )

Diagnosis. Posterior opisthosomal setae (Z4, S5, R6, and podonotal setae j3, z4, s5 which are longest), undulate; anogenital setae JV5 and ZV5 long and undulate; epistome pointed anteriorly; tarsus IV with four macrosetae, genua III and IV with two macrosetae, femora II, III and IV also with macrosetae.

FEMALE (n = 15). Length of dorsal shield 898 (809–903), width at level of setae r5 493 (450–493).

Dorsum ( Fig. 1 ). Dorsal shield with 43 pairs of setae, lateral setae distinctly longer than dorso-central setae. All dorsal setae smooth except some posterior setae (S5, Z4, Z5 and J5) which are slightly pilose. Shield anterolaterally almost smooth, opisthonotum reticulated marginally. Some lateral setae, especially posterior opisthosomal setae, undulate; setae j3 238 (227), z4 218 (163), Z4 325 (325), R6 200 (210), s5 235 (245) longest. Opisthonotum with supernumerary setae ZX1 and ZX2. Integument surrounding shield with six pairs of setae (R1 – 6) ( Fig. 1 ). Peritremal shield not fused with dorsal shield anteriorly. Peritremes reach base of setae s2 ( Fig. 1 ). Setae j1 83 (87–85), s1 83 (84–88), z1 43 (43–47) and J5 88 (85–88) are shortest.

Gnathosoma ( Figs 2–5 ). Hypostomal groove with six rows of denticles, each row with 9–13 denticles. Hypostome with four pairs of setae, internal posterior hypostomatic setae (h3) the longest, h1 43 (43–45), h2 43 (43–50), h3 113 (110–115), pc 52 (48–53). Anterior margin of epistome pointed, triangular, with 10 or more denticles ( Fig. 5 ). Fixed cheliceral digit with nine small and two large teeth (distal to pilus dentilis), pilus dentilis 10 (9–12) well developed, associated with a large posterior tooth ( Fig. 2 ). Palp: 238 (237–2341) long; femur 1–1/ 0–0/0–0; genu 1–0/1–2/1–0; tibia 2–0/0–1/1–1, tarsus 1–0/0–2/1–1; palp apotele two–tined ( Fig. 4 ).

Venter ( Fig. 6 ). Tritosternum biramous, laciniae pilose, length of tritosternum 245 (208–257) ( Fig. 6 ). Presternal plates weakly lineate and lightly sclerotised. Length of sternal shield 148 (148–170), width 168 (158– 178), reticulate, with three pairs of sternal setae, a pair of slit-like pores posterior to st1 and a pair of large round or oval pores between setae st2 to st3. Setae st4 on soft integument. Length of sternal setae st1 53 (50–65), st2 63 (62– 73), st3 60 (58–63), st4 55 (55–70), st5 55 (50–59). 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 130 (125–153) and st1 – st3 143 (140–153). Genital shield tongue-shaped and reticulate, width 133 (128–139) at level of st5. Anal shield pear shaped, length 135 (110–135), width 100 (100–125), punctate posteriorly and smooth anteriorly, with three circumanal setae. Para-anal setae longer than post-anal seta, almost in line with posterior margin of anal opening ( Fig. 6 ). Peritremal shields free, with posterior incision ( Fig. 6 ). Opisthogaster with 11 pairs of smooth setae, setae ZV5 and JV5 the longest, length of opisthogastric setae JV1 68 (58–82), JV2 88(82–107), JV3 80 (74–82), JV4 193 (188–195), JV5 251 (249–253), ZV1 81 (75–81), ZV2 120 (108–130), ZV3 90 (83–108), ZV4 193 (188–195), ZV5 220 (193–245) and JV5 and ZV5 the longest; setae JV4 – 5 and ZV4 – 5 undulate; three pairs of metapodal shields, two elongate and one small and rounded, all posterior to coxae IV.

Spermatheca ( Fig. 7 ). Sacculus squarish, ramus very short and tube-like, with tubulus very slender and long, with conspicuous opening on coxae III.

Legs ( Figs 8–10 ). 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, with spine-like setae on tarsus and tibia, leg III with spine-like setae on genu. Chaetotaxy as recorded for free-living laelapids (Evans, 1963); femora (II) 2, 2/1, 2/1, 1, (III) 1, 2/1, 1/0, 1, (IV) 1, 2/1, 1/0, 1; genua (II) 2, 3/1, 3/1, 1, (III) 2, 2/1, 2/1, 1, (IV) 2, 2/1, 3/0, 1; tibiae (II) 2, 2/0, 2/2, 2, (III) 2, 1/1, 2/1, 1, (IV) 2, 1/1, 3/1, 2; tarsi (II) 3, 3/2, 3/2, 3 + md + mv, (III) 3, 3/2, 3/2, 3 + md + mv, (IV) 3, 3/2, 3/2, 3 + md + mv. Femur II, III and IV each with one macroseta, genu III and IV each with two macrosetae; tarsus IV with four macrosetae ( Figs 8–10 ). Length of leg I (coxae to tip of ambulacrum) 943 (805–968), leg II 712 (648– 813), leg III 763 (743–838) and leg IV 1075 (1000–1163). Length of macrosetae: femur II setae pd1 260 (240– 260), femur III ad1 255 (228–260), femur IV ad1 388 (375–403), genu III [ad1 125 (113–112), pd1 114 (110– 120)], genu IV [ad1 240 (225–243), pd1 198 (160–198)]; tarsus IV with four macrosetae [ad2 setae 215 (213–218), ad3 setae 208 (210–218), pd2 setae 235 (230–247), pd3 setae 220 (220–223)] ( Fig. 10 ) and tarsi I–II and III without macrosetae.

Remarks. The new species is similar to H . polyphyllae in general appearance but differs from the latter as follows: dorsum with 43 pairs of setae in H. surii n. sp. compared with 35 pairs in H. polyphyllae ; setae Z4 325 (325), j3 238 (227), s5 235 (245), z4 218 (163), R6 200 (210) longest in the new species but only Z4 331(277–370) longest in H. polyphyllae ; setae r2 – 3, UR absent in the new species but present in H. polyphyllae ; opisthogaster with 11 pairs of setae in the former while nine pairs in the latter; opisthogastric setae JV5 251 (249–253) and ZV5 220 (193–245) much longer and more undulate than those of H. polyphyllae ; epistome pointed and with 10 denticles in the new species versus subtriangular and with six denticles in H. polyphyllae ; fixed cheliceral digit with nine small denticles in the former but seven in the latter; genu III and IV each with two macrosetae in H. surii versus no macrosetae on genu III and one on IV in H. polyphyllae ; tarsus IV with four macrosetae in H. surii opposed to three macrosetae in H. polyphyllae .

According to Karg (1979, 1993) and Costa (1971), H. surii n. sp. resembles H. integer in the number of opisthogastric setae and subcapitular setae, and three long opisthocaudal setae. However it differs from H. integer in that the dorsum has 43 pairs of setae in surii and 36–37 in H. integer ; setae Z4 325 (325), j3 238 (227), s5 235 (245), z4 218 (163), R6 200 (210) longest in the new species whereas only Z4 (280) in H. integer and with Z3 absent; opisthogastric setae JV5 251 (249–253) and ZV5 220 (193–245) long and undulate in H. surii vs. only ZV5 long and undulate in H. integer ; epistome pointed and with ten denticles on margin in new species versus triangular and with 24 denticles in H. integer ; fixed digit with nine small denticles in new species but ten in H. integer ; tarsus IV with four macrosetae in H. surii but two in H. integer ; femur and genu III and IV with spine–like setae in new species versus none in H. integer .

Etymology. This species is named in honour of Mr. Ghobad Surii , Department of Agriculture of Hamedan, Iran, who kindly helped senior author in collecting the mites.

Type material. Holotype female and 14 paratype females from Polyphylla olivieri Castelnau ( Coleoptera : Scarabaeidae ) from potato farms at Bahar, Hamedan Province, Iran, 26 July 2007, coll. Ghobad Surii .

Figures

FIGURES 1 – 7. Hypoaspis surii n. sp., female. 1. Dorsal idiosoma; 2. Chelicera; 3. Hypostome; 4. Palp tarsal claw; 5. Epistome; 6. Ventral idiosoam; 7. Spermatheca.

FIGURES 8 – 10. Hypoaspis surii n. sp., female. 8. Leg II; 9. Leg III; 10. Leg IV.