Adamystis ekaterinae Ghasemi-Moghadam & Saboori, 2019

Ghasemi-Moghadam, Sahebeh, Ahadiyat, Ali, Saboori, Alireza & Fathipour, Yaghoub, 2019, A new species of Adamystis (Acari: Trombidiformes: Adamystidae) from Iran, Zootaxa 4647 (1), pp. 14-22 : 14-22

publication ID	https://doi.org/ 10.11646/zootaxa.4647.1.4
publication LSID	lsid:zoobank.org:pub:2D42253A-CA92-41AF-A6D8-77FC758776C0
persistent identifier	https://treatment.plazi.org/id/03CB87CC-FFDB-FFFD-D4F5-7CBCFDF4FEBE
treatment provided by	Plazi
scientific name	Adamystis ekaterinae Ghasemi-Moghadam & Saboori
status	sp. nov.

Treatment

Adamystis ekaterinae Ghasemi-Moghadam & Saboori View in CoL sp. nov.

( Figs. 1–16 View FIGURES 1–4 View FIGURES 5–6 View FIGURES 7–10 View FIGURES 11–16 )

Diagnosis. Idiosoma with smooth dorsal shield. Setae h 1–2 located on soft integument. h 1, h 2, ps 1 and ps 2 on smooth platelets. Dimpled vacuoles present between sci and sce on lateral propodosoma. Lateral lens-like structures absent. One pair of eyes associated with postocular bodies. Four pairs of aggenital setae. Three pairs of adoral setae. Chelicera with one seta; coxal setae I–IV 1-3-3-2.

Description

Female (n = 5): Body length 338 (313–330); width 155 (143–168); length of subcapitulum 45 (40–47). Lengths of legs I–IV: 224 (195–215); 220 (182–208); 205 (183–198); 251 (231–251).

Dorsum ( Figs. 1–4 View FIGURES 1–4 ). Dorsal shield smooth and integument surrounding shield striated, with seven pairs of setiform setae (ve, sce, c 1, c 2, d 1, e 1 and f 1), and one pairs of filiform trichobothria (sci). Prodorsum without lens-like structure, postocular bodies present and twice as large as eyes, one pair of pores before ve and one pair of dimpled vacuoles present between sci and sce on lateral propodosoma. Trichobothria vi on naso and sci with chambered bothridium. Ventral view of naso with longitudinal radial lines pattern. Muscle sigillae extending between bothridial sensilla sce to e 1. Setae h 1 and h 2 on smooth separate platelets, ps 1 and ps 2 on common smooth platelets, setae ps 3 situated laterally and setae an 2, an 3 and ad 3 situated ventrally (Holotype having asymmetry in the numbers of adoral setae (three adoral setae on the left side and two adoral setae on the right side)). Setae h 1–2, ps 1–3 and ad 1–3 lanceolate. Four pairs of lyrifissures (ia, im, ip and ih) present. Lengths of idiosomal setae and their distances are presented in Table 1.

Venter ( Figs. 5–6 View FIGURES 5–6 ). Except endopodal region and a large part of genital valves, integument striated; longitudinally striated between coxae I–IV; seven pairs of endopodal setae present, setiform. Genital covers with 11–13 pairs of setae, two pairs of same-sized acetabula and two pairs of internal rod-like setae (k 1 and k 2). Four pairs of aggenital setae present on smooth platelets. Anal valves with three lanceolate setae an 1–3. Lengths of ventral setae are presented in Table 1.

The following variations and asymmetry in the numbers of setae on genital valves were observed: 11 + 12 (Holotype ARS-20190603-1a), 13 + 12 (Paratype ARS-20190603-1b), 13 + 13 (Paratype ARS-20190603-1c), 14 + 13 (Paratype ARS-20190603-1d), 11 + 11 (Paratype ARS-20190603-1e). Anal valves of one paratype (ARS- 20190603-1e) bearing four setae. Also, the holotype has three and four aggenital setae on the left and right sides, respectively.

Gnathosoma ( Figs. 7–10 View FIGURES 7–10 ) Subcapitulum with three pairs of adoral setae (or 1–3). Chelicerae 53 (43–45) long, typical for the genus, bearing one seta (ch a = 13 (12–15)), peritremes located at cheliceral bases and near naso. Palp linear, 38 (38) long, palp tarsus 15 (15–16 long, twice as long as palp tibia 8 (8)); Palpal tarsus with four normal setae, a solenidion and an eupathidium, palpal setal formula: 0-2-3-4(+ 1ω + 1ζ).

TABLE 1. Metric data of setae of Adamystis ekaterinae Ghasemi-Moghadam & Saboori sp. nov. (female).

Legs ( Figs. 11–16 View FIGURES 11–16 ). All femora incompletely divided, suture present ventrally, tarsal claws I–II more intensely bipectinated than tarsal claws III–IV. Setal formulae of leg segments I–IV as follow: coxae 1-3-3-2; trochanters 1- 2-2-1; basifemora 5-5-3-2; telofemora 4-4-4-3, genua 7+1σ-7+1σ-4+1σ-4; tibiae 9+1ζ+1φ + 1κ-9+1ζ-9+1φ-9; tarsi 21+5ζ+1ω - 20+6ζ+1ω-13+4ζ-16.

Immature stages and male: Unknown.

Etymology. The new species is named in memory of Dr. Ekaterina A. Sidorchuk (Russian Academy of Sciences, Moscow, Russia) for her great contributions to the biodiversity and ecology of mites.

Remarks. Adamystis ekaterinae Ghasemi-Moghadam & Saboori sp. nov. closely resembles A. alvandicus Khanjani et al., 2012 and A. sartorum Barilo, 1987 in having one seta on the chelicerae, four aggenital setae (ag 1–4) and lack of lateral lens-like structure. The new species having smooth dorsal shield as A. alvandicus . Also, in A. ekaterinae Ghasemi-Moghadam & Saboori sp. nov. and A. sartorum , seta f 1 on dorsal shield and setae h 1–2 on soft integument. However, the new species can be distinguished from the A. alvandicus by: 1. three pairs of adanal setae (vs. two pairs in A. alvandicus ); 2. setae h 1–2 on soft integument (vs. setae h 1–2 on dorsal shield in the latter); 3. coxa I bearing one seta (vs. with two setae in the latter); 4. h 1–2, ps 1–3, ad 1–2 and an 1 lanceolate and other idiosomal setae setiform (vs. all dorsal setae serrated in A. alvandicus ); and the new species differs from A. sartorum by: 1. smooth dorsal shield (vs. dorsal shield striated in the latter); 2. three pairs of adoral setae (vs. four pairs in A. sartorum ); 3. anal plates with three pairs of setae (vs. five pairs of setae an 1–5 in A. sartorum ); 4. coxae I–IV 1-3-3-2 (vs. coxae I–IV 3-4-4- 2 in the latter); 5. genital covers with 11–13 pairs of setae (vs. with 14–15 in the latter). Moreover, in Adamystis ekaterinae Ghasemi-Moghadam & Saboori sp. nov. postocular bodies present and one pair of dimpled vacuoles present between sci and sce on lateral propodosoma.

Remarks on constriction of idiosoma

According to Fuangarworn and Lekprayoon (2010), the subfamily Adamystinae is distinguished from Saxidrominae by following characteristics: 1. idiosoma not constricted at level of coxae IV; 2. dorsal shield (if present) entire; 3. setae d 2 and e 2 absent; 4. cheliceral bases not bulbous; 5. one or two cheliceral setae present; 6. fixed cheliceral digits reduced; 7. leg femora divided. However, in A. ekaterinae Ghasemi-Moghadam & Saboori sp. nov. the idiosoma is constricted at level of coxae IV in two paratypes (ARS-20190603-1c & ARS-20190603-1e) and just constricted in one side of idiosoma in one paratype (ARS-20190603-1d) but no constriction is seen in the holotype and one paratype (ARS-20190603-1b) of A. ekaterinae ( Figs. 17–19 View FIGURE 17–19 ). Nevertheless, A. ekaterinae Ghasemi-Moghadam & Saboori sp. nov. except for the feature mentioned, have all characteristics of the subfamily Adamystinae . Therefore, this feature may have limited taxonomic value for distinguish between two subfamilies.

Type materials. Holotype and four paratypes females; Chitgar Forest Park (35° 43’ 17” N, 51° 14’ 16” E) Tehran, Tehran Province, Iran. From soil GoogleMaps . Holotype (ARS-20190603-1a): 25 August 2017; soil temperature 29°C; soil pH 7.56; soil humidity 9%. Paratypes: Two paratypes (ARS-20190603-1b, 1c) with same data as holotype, one paratype (ARS-20190603-1d) were collected on 5 August 2017; soil temperature 32°C; soil pH 8; soil humidity 0% and one paratype (ARS-20190603-1e), were collected on 5 August 2017; soil temperature 32°C; soil pH 8; soil humidity 2%. The holotype (ARS-20190603-1a) and one paratype (ARS-20190603-1c) are deposited at the Acarology Collection of the Department of Plant Protection , College of Agricultural Sciences and Food Industries , Science and Research Branch , Islamic Azad University , Tehran, Iran. Two paratypes (ARS-20190603-1b & ARS-20190603-1e) are deposited in the Acarological Collection , Jalal Afshar Zoological Museum ( JAZM), Department of Plant Protection , Faculty of Agriculture , University of Tehran, Karaj, Iran and one paratype (ARS-20190603-1d) is deposited in the personal collection of the first author GoogleMaps .