Ololaelaps elongatus Babaeian & Ghobari & Samani 2019, sp. nov.
Creators: name: Babaeian, Esmaeil
name: Ghobari, Hamed
name: Samani, Kyumars Mohammadi
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Mesostigmata
Laelapidae
Ololaelaps
Ololaelaps elongatus

description: Ololaelaps elongatus Babaeian sp. nov.
(Figures 12–25)
Material examined. Holotype: female, Iran, Kurdestan Province, Marivan-Saghez, 35˚32’ N, 46˚18’ E, 1345 m, 14- May-2017, soil detritus, H. Ghobari coll.. Paratypes: three females, same data as holotype. The type materials are deposited in the Jalal Afshar Zoological Museum (JAZM), Department of Plant Protection, College of Agriculture, University of Tehran, Karaj, Iran (holotype and three paratypes).
Diagnosis. The new species may be distinguished from congeners by the combination of the following character states—Dorsal shield elongate (ratio length/width 1.76 (1.80–1.93), with 39 pairs of moderately long setae, except short setae j1 and z1; with strip of soft cutucle exposed dorsolaterally. Sternal shield markedly elongate (ratio length/width 1.50 (1.55–1.57), fused laterally with endopodals III–IV; poroid iv3 and seta St4 inserted on unsclerotised soft cuticle. Genitiventrianal shield relatively elongate, anterior portion narrow, not contiguous to acetabula IV; shield reticulate and bearing four pairs of acicular pre-anal setae (St5, Zv1, Jv1, Jv2). Metapodal shield fused to genitiventrianal shield on the right side or both sides. Ventral soft integument with nine pairs of opisthogastric setae. Peritrematal shields fused with exopodal shields IV, and free from genitiventrianal shield.
Description. Female (n=4). Dorsal idiosoma (Figure 16). Dorsal shield 470 (480–495) µm long and 267 (248– 272) µm wide, ratio length/width 1.76 (1.80–1.93), nearly parallel-sided from level of r3 to S3, with distinct scalelike sculpture throughout, and 39 pairs of long and delicate setae, length progressively increasing in from anterior to posterior; 22 pairs (j1–j6, z1–z6, s1–s6, r2–r5) in podonotal area and 17 pairs (J1–J5, Z1–Z5, Px2–Px3, S1–S5) in opisthonotal area. Dorsal shield with 18 pairs of pore-like structures, of which 14 pairs appear nonsecretory (lyrifissures) and four pairs secretory (gd1, gd6, gd8, gd9).
Ventral idiosoma (Figure 20, 27, 28). Tritosternum with columnar base 35 (25–32) µm and pilose laciniae 74 (69–77) µm, free presternal shields abutting anterior margin of sternal shield; sternal shield elongate, 161 (156–168) µm long and 106 (99–109) µm wide, ratio length/width 1.50 (1.55–1.57), reticulated throughout except in posterior quarter, bearing three pairs of subequal setae (St1: 32 (27–30) µm, St2: 32 (30) µm, St3: 30 (25–28) µm) and two pairs of lyrifissures (iv1, iv2); seta St4 and lyrifissure iv3 on soft cuticle (Figure 27). Genitiventrianal shield longer than wide, 260 (257–285) µm long, 191 (181–186) µm wide, ratio of length/width 1.36 (1.40–1.53), reticulate throughout, outlines of polygonal sculptural cells curved; cells larger in anterior half; shield with four pairs of preanal setae: St5 26 (24–28) µm, Zv1 40 (37–42) µm, Jv1 42 (32–37) µm and Jv2 40 (35–42) µm long (Figure 22, 28). Para-anal setae 25 (17–20) µm and post-anal seta 17 (12–15) µm long. Peritrematal shield fused anteriorly with dorsal shield, at level near setae z1, and posteriorly fused to granulate parapodal element.
Gnathosoma (Figures 17–19, 21, 29). Epistome subtriangular, with moderately denticulate margin (Figure 17). Hypostomal (h1, h2, h3) and capitular setae simple and smooth; deutosternal groove narrow, with six rows of 2–6 denticles each and a smooth ridge anteriorly; internal malae contiguous and finely fringed, lateral projections half the length of median one and more densely fringed; labrum prominent, blade-like, projecting to palp-genu, with pilose surface. Corniculi horn-like, moderately long. Salivary styli cylindrical, rounded at the tip and slightly thicker basally (Figure 19). Chelicerae with movable digit bidentate 66 (64–69) µm long (from tip to base), fixed digit c. 74 (71–74) µm long, with four teeth, including, total length c. 198 (203–210) µm, with fringed hyaline arthrodial process at its base; pilus dentilis setiform (Figure 21, 29). Palpi 136–156 µm long, with normal setation; palptarsal claw three-tined, basal tine slightly shorter (Figure 18).
Legs (Figures 23–26). Length legs I–IV: 527 (495–522) µm, 365 (347–359) µm, 286 (245–277) µm, 455 (398– 465) µm. Setation of legs I–IV as follows: coxae 2, 2, 2, 1; trochanters 6, 5, 5, 5; femora 13 (2 3/1 2/3 2), 11 (2 3/1 2/2 1), 6 (1 2/1 1/0 1), 6 (1 2/1 1/0 1); genua 13 (2 3/2 3/1 2), 11 (2 3/1 2/1 2), 9 (2 2/1 2/1 1), 9 (2 2/1 3/0 1); tibiae 13 (2 3/2 3/1 2), 10 (2 2/1 2/1 2), 8 (2 1/1 2/1 1), 10 (2 1/1 3/1 2). Setae av on femur and genu II, pd on femur IV and pl on genu IV thickened. Tarsi II–IV each with 18 setae (3 7/5 3).
Etymology. The species name “ elongatus ” refers to the elongate character of the species, especially its elongate dorsal and sternal shields.
Remarks. Ololaelaps elongatus Babaeian sp. nov. differs from the closely related species O. mooiensis Ryke, 1962, O. tasmanicus (Womersley, 1956), O. bregetovae Shereef & Soliman, 1980 and O. paratasmanicus (Ryke, 1962) by its very elongate sternal shield (reaching to a level near mid-coxa IV), fusion of posterolateral angles of sternal shield with endopodals III–IV, and also posterior end of peritrematal shield to exopodals IV.
description: Published as part of Babaeian, Esmaeil, Ghobari, Hamed & Samani, Kyumars Mohammadi, 2019, Redescription of Ololaelaps tasmanicus (Womersley, 1956) and description of a new species of Ololaelaps Berlese (Acari: Laelapidae) from Iran, pp. 351-364 in Zootaxa 4629 (3) on pages 357-361, DOI: 10.11646/zootaxa.4629.3.3, http://zenodo.org/record/3271027