Neoathyreacarus pygmephoroides, Khaustov & Frolov, 2022

Khaustov, Alexander A. & Frolov, Andrey V., 2022, New taxa of Athyreacaridae (Acari: Heterostigmata) from Neotropical and Afrotropical realms, Zootaxa 5188 (6), pp. 501-520 : 502-504

publication ID	https://doi.org/ 10.11646/zootaxa.5188.6.1
publication LSID	lsid:zoobank.org:pub:26467FAA-A7DB-41F7-B4D3-7A8A27B89242
DOI	https://doi.org/10.5281/zenodo.7105631
persistent identifier	https://treatment.plazi.org/id/03D187D0-4947-FFBD-FF5C-F8E1FF52F82A
treatment provided by	Plazi
scientific name	Neoathyreacarus pygmephoroides
status	sp. nov.

Treatment

Neoathyreacarus pygmephoroides sp. nov.

( Figs 1–6 View FIGURE 1 View FIGURE 2 View FIGURE 3 View FIGURE 4 View FIGURE 5 View FIGURE 6 )

Description. Female. Length of idiosoma 300 (290–320), width 170 (160–180).

Gnathosoma ( Fig. 2 View FIGURE 2 ). Gnathosomal capsule, excluding palps, broadly oval, length 32 (32–34), width 37 (37–46). Dorsal gnathosomal apodeme poorly visible. Two pair of barbed, blunt-tipped cheliceral setae cha 33 (28–33) and chb 10 (10–11). Postpalpal setae (pp) 8 (8–9) blunt-tipped, smooth. Setae m 19 (18–20) pointed and smooth. Setae dFe 16 (15–16) and dGe 22 (20–22) weakly barbed and pointed. Tibial claw slightly hooked, without projection. Cheliceral stylet length 8 (7–9).

Idiosomal dorsum ( Figs 1A View FIGURE 1 , 5A View FIGURE 5 , 6A–C View FIGURE 6 ). All dorsal shields with numerous sparsely distributed puncta ( Figs 6A– C View FIGURE 6 ). Prodorsal shield without lateral projections. All dorsal setae weakly barbed; setae sc2, c2, d, and f pointed, other dorsal setae blunt-tipped;. Cupules ia on tergite D, im and ip on tergite EF and ih on tergite H small, round. Tergites C, D, and EF with few pore-like structures. Stigmata round. Pseudanal segment completely covered dorsally by tergite H. Lengths of dorsal setae: v1 50 (46–52), v2 20 (19–21), sc2 90 (79–90), c1 53 (46–54), c2 105 (98–105), d 110 (105–110), e 34 (31–40), f 120 (115–120), h1 88 (79–88), h 2 73 (70–77). Distances between setae: v1–v1 23 (18–24), v2–v2 58 (52–58), sc2–sc2 63 (55–63), c1–c1 70 (66–72), c1–c2 31 (27–32), d–d 83 (76–89), e–e 76 (73–80), f–f 83 (82–84), h1–h1 29 (28–36), h1–h2 25 (22–26).

Idiosomal venter ( Figs 1B View FIGURE 1 , 5B View FIGURE 5 , 6 D–F View FIGURE 6 ). All ventral plates with numerous puncta ( Figs 6D–F View FIGURE 6 ). Setae 3b, 3c, 4a, 4b, and 4c smooth; other ventral setae weakly barbed. Setae 1b, 2c, 3a, ag1 and ps1-3 blunt-tipped, other ventral setae pointed; in most specimens at least one of setae ps1 and/or ps3 bifurcate, in other specimens not bifurcate; setae ps1-3 situated in one transverse row. Ap1 well developed and fused with appr; ap2 well developed and fused with appr; apsej absent; ap3 weakly developed and presented by small oval sclerites; ap4 and ap5 well developed. Aggenital plate with two pairs of aggenital setae ( Fig. 6F View FIGURE 6 ). Length of mid-sternal plate 64 (63–67), width 61 (61– 65); ratio length/width 1.0. Lengths of ventral setae: 1a 25 (25–28), 1b 15 (15–16), 1c 24 (20–24), 2a 28 (27–29), 2b 28 (25–28), 2c 15 (12–20), 3a 14 (14–23), 3b 28 (27–29), 3c 26 (25–27), 4a 26 (26–27), 4b 34 (28–34), 4c 27 (25–28), ag1 15 (14–15), ag2 33 (29–33), ps1 48/53 (47–50), ps2 29 (24–41), ps3 65/76 (62–72).

Legs ( Figs 3 View FIGURE 3 , 4 View FIGURE 4 ). Leg I ( Fig. 3A View FIGURE 3 ): setae l’, l”, v’ of femur, v’ of genu, k of tibia, and all of tarsus smooth, other leg setae barbed; seta l’, l”, v’ of femur, v’ of genu, l”, v’ and k of tibia and (p), (tc), (ft) of tarsus blunt-tipped, other leg setae pointed; seta l’ of femur spiniform, situated very close to d. Lengths of solenidia ω1 15 (14–15), ω2 7 (7), φ1 10 (10–11), φ2 6 (6–7); all solenidia digitiform. Leg II ( Fig. 3B View FIGURE 3 ): solenidia ω 10 (10–14) and φ 3 (3) digitiform; all leg setae weakly barbed; setae d, l’ of femur and (pv) of tarsus blunt-tipped, other leg setae pointed. Leg III ( Fig. 4A View FIGURE 4 ) similar in shape and length to leg II; solenidion φ 3 (3–4) digitiform; all leg setae weakly barbed; setae v’ of trochanter, d of femur and (pv) of tarsus blunt-tipped, other leg setae pointed. Leg IV ( Fig. 4B View FIGURE 4 ): solenidion φ 4 (4) digitiform; all leg setae weakly barbed; setae v’ of femur and genu blunt-tipped, other leg setae pointed.

Type material. Female holotype, slide No. ZISP T-Ath-011, Chile, Termas de Chillán , 15.I.2010, on Bolborhinum tubericeps . Paratypes: 24 females, same data .

Type deposition. The holotype and five paratypes are deposited in the collection of the Zoological Institute of RAS, Saint Petersburg, Russia ; other paratypes are deposited in the collection of the Tyumen State University Museum of Zoology , Tyumen, Russia .

Etymology. The name of the new species pygmephoroides refers to its morphological (not phylogenetic) similarity to some species of the superfamily Pygmephoroidea sharing the following characters: subcapitulum with only one pair of setae, tergite C not divided into three parts, and similar position of anal opening and pseudanal setae.