Pterygosoma aqabensis Fajfer & Melnikov, 2014, sp. nov.
Creators: name: Fajfer, Monika
name: Melnikov, Daniel
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Prostigmata
Pterygosomatidae
Pterygosoma
Pterygosoma aqabensis

description: Pterygosoma aqabensis sp. nov.
(Figs. 1–4, 12)
Description. FEMALE (holotype, Figs. 1–2). Gnathosoma. Cheliceral base and shaft 80 long (in 14 paratypes 70– 80 long). Fixed cheliceral digit about 20 long, with spinous process. Movable cheliceral digit with basal spur. Palpal femur and genu with smooth setae each, about 25 long. Palpal tibia with 3 smooth setae and short claw. Palpal tarsi with 3 smooth setae. Subcapitulum with filiform setae n, 15 long. Free lateral part of peritremal branch about 25 long. Hypostome 95 long, with smooth slightly flattened apex (in 5 paratypes with rounded apex). Idiosoma 500 long (420–500) and 865 wide (745–965). Dorsum (Fig. 1 A). Anterior part of idiosoma with 14–21 pairs of slightly serrated setae arranged in 2 groups: mesal group consisting of 12–15 setae, 20 long, lateral group consisting of 2–6 setae, 10–15 long. Two smooth setae, 30–35 long, present posterior to lateral groups. Medial part of idiosoma with 4 pairs of dorso-median setae dm1–dm4 about 25, 40, 70 and 55 long, respectively. Setae dm1– dm2 filiform, setae dm3–dm4 paddle-shaped with minute spicules on apical margin. Postero-lateral part of idiosoma with 9–10 pairs of setae of 2 types: 2–3 pairs of slightly serrated or expanded apically shorter setae (55– 85 long) and 6–7 pairs of paddle-shaped longer setae (110–150 long) with minute spicules on apical part. Eyes present. Venter (Fig. 1 B) with 3 pairs of ventro-median setae: vm1–vm2 filiform, vm3 slightly serrated. Genital slit situated mainly dorsally. Genital series represented by 4 pairs of spin-like setae g1–g4 (in 2 paratypes 5 genital setae present). Pseudoanal setal series represented by 1 pair of smooth or very slightly serrated setae ps1 and 6 pairs of paddle-shaped setae ps2–ps7. Setae ps1–ps3 situated ventrally, setae ps4 terminally, ps5–ps7 dorsally. Sometimes asymmetrical duplication of setae ps observed. Legs. Coxal setation: 1a, 1b, 2b, 3a, 3b arranged in formula 2–1–2–0, all setae filiform; setae of trochanters I–IV (1–1–1–1), femora I–IV (3–1–1–1), genua I–IV (3– 0–0–1), tibiae I–IV (5–3–3–3). All setae on each prodomers filiform, except for slightly plumose setae d’FI–II, v’TiI–IV, v”TiI–IV and d’TiIII–IV. Setation of tarsi: I 13 setae (ft, tc’, tc”, p’, p”, a’, a”, it’, it”, u’, u”, vs’, vs”) and solenidion ω 1; II 8 setae (tc’, p’, p”, it’, it”, u’, u”, vs’) and ω 1; III and IV with 8 setae each (tc’, p’, p”, it’, it”, u’, u”, vs’). Setae tc’, tc”, a’, a” of leg I represented by eupathidia, p’ and p” fan-like. Setae tc’ of legs II–IV and setae it’, it”, u’, u” of legs I–IV smooth, setae vs’, and vs” slightly serrated.
MALE. Unknown.
DEUTONYMPH (2 paratypes, Fig. 3). Gnathosoma as in female. Cheliceral base and shaft 75 long. Fixed cheliceral digit 20 long with spinous process. Movable cheliceral digit with basal spur. Free lateral part of peritremal branch about 20 long. Idiosoma 250–360 long and 500–555 wide. Dorsum (Fig. 3 A). Anterior part of idiosoma with 14–18 pairs of serrated setae, 15–25 long, arranged in 2 groups: mesial group consisting of 10–12 setae, lateral group consisting of 4–6 setae. Two pairs of fine-pointed slightly serrated setae situated posterior to these groups, 20–30 long, present. Medial part of idiosoma with 4 pairs of dorso-median setae: dm1–dm2 filiform, 25–45 long; dm3–dm4 paddle–shaped with minute spicules on apical part, 50–65 long. Postero-lateral part of idiosoma with 9 pairs of setae of 3 types: 2 pairs of serrated setae, 35–45 long, 2 pairs of paddle-shaped setae with minute spicules on apical part, 70–85 long and 5 pairs of apically expanded or tapered setae, 100–130 long. Idiosomal venter (Fig. 3 B) as in female. Anal slit situated mainly ventrally. Genital series represented by 4 pairs of spin-like setae g1–g4 and 6 pairs of setae ps. Setae ps1 smooth and fine-pointed, ps2–5 paddle-shaped. In 1 paratype asymmetrical duplication of setae ps observed. Legs as in female.
PROTONYMPH (1 paratype, Fig. 4). Gnathosoma as in female. Idiosoma 320 long and 505 wide. Dorsum (Fig. 4 A). Anterior part of idiosoma with 10–12 pairs of anterior serrated setae, 15–20 long, arranged in 2 groups: mesal group consisting of 7–9 setae, lateral group consisting of 3–4 setae. Medial part of idiosoma with 4 pairs of dorso-median setae: dm1–dm2 slightly serrated, 20 and 25 long, respectively, dm3–dm4 slightly expanded apically with minute spicules on apical part, 40 long. Postero-lateral part of idiosoma with 6 pairs of slightly serrated setae, 40–60 long. Venter as in female. Anal slit situated mainly ventrally. Genital series represented by 2 pairs of setae g. Setae g1 slightly serrated, 10 long, situated ventrally, g2 very minute, about 5 long, situated terminally. Pseudoanal setal series represented by 2–3 pairs of setae ps.
Type material. Female holotype, 12 female, 2 deutonymph, and 1 protonymph paratypes from Pseudotrapelus aqabensis Melnikov et al. (CAS 149449), SAUDI ARABIA: Mecca, 21º22’N, 39º37’E, 17 April 1979, coll. J. Gasperetti and S. Collenette; 1 female paratype from same host (CAS 149450) and location, 17 April 1979, coll. D. J. Gasperetti and S. Collenette.
Type deposition. Holotype, 6 female, 1 deutonymph and 1 protonymph paratypes in ZISP, 6 female and 1 deutonymph paratypes in AMU (AMU–PTE10.1).
Etymology. The name aqabensis refers to the species name of the host.
Differential diagnosis. This new species is similar to P. dhofarensis sp. nov. In females of both these species the arrangement of the dorsal setae and setation of genua II–III and tarsi, tibiae, femora, trochanters I–IV are the same, the antero-dorsal setae are slightly serrated, the eyes are present, the genital series is represented by four pairs of setae g, setae ps1 are smooth or slightly serrated. This new species differs from P. dhofarensis by the following features: subcapitular setae n are present, palp setae dG and dF are subequal in the length, there are 14– 21 pairs of the antero-dorsal setae, four pairs of the dorso-median setae dm and five or six pairs of the posterolateral setae and the setae are 60–70 long, setae vm3 are slightly serrated, setae vGI and vGIV are present, the pseudoanal setal series is represented by seven pairs of setae ps. In females of P. dhofarensi, subcapitulular setae n are absent, palp setae dG are longer than dF, there are 22–30 pairs of the antero-dorsal setae and three pairs of dorso-median setae dm, two pairs of the postero-lateral setae 30–40 long are present, setae vGI and vGIV are absent, the pseudoanal setal series is represented by six pairs of setae ps.
description: Published as part of Fajfer, Monika & Melnikov, Daniel, 2014, New species and records of scale mites (Acari: Pterygosomatidae) from Arabian agamid lizards (Squamata: Agamidae), pp. 401-417 in Zootaxa 3764 (4) on pages 402-406, DOI: 10.11646/zootaxa.3764.4.1, http://zenodo.org/record/228834