Peloribates (Peloribates) elisabethae, Ermilov & Subías & Shtanchaeva & Friedrich, 2021

Ermilov, Sergey G., Subías, Luis S., Shtanchaeva, Umukusum Ya. & Friedrich, Stefan, 2021, New sacculonotic Oripodoidea (Acari: Oribatida) from Peru, Zootaxa 5048 (3), pp. 422-434 : 430-433

Peloribates (Peloribates) elisabethae sp. nov.

( Figs 5 , 6 )

Diagnosis. Body size: 282–398 × 182–282. Prodorsum microfoveolate and slightly rugose; notogaster and ventral side micro- and macrofoveolate. Rostrum rounded. Prolamella and translamella absent. Rostral, lamellar and interlamellar setae long, setiform, barbed, in and le with apical swollen; ro shortest. Bothridial seta long, clavate, barbed. Notogastral setae setiform, barbed, with apical swollen; dm and h 2 of medium length, other setae long. Epimeral and anogenital setae short, setiform, barbed or roughened. Circumpedal carina long. Leg tarsus I with 19 setae (l” absent); genu II with three setae (v’ present); femur II with four setae (l” absent).

Description of adult. Measurements. Body length: 398 (holotype: female), 282 (one male paratype), 332–398 (three female paratypes); body width: 265 (holotype), 182 (male paratype), 215–282 (female paratypes).

Integument ( Figs 1A–C ; 2A, E, H ). Body color brown. Prodorsum microfoveolate and slightly rugose. Notogaster and ventral side densely microfoveolate and sparsely macrofoveolate (diameter of foveola up to 8).

Prodorsum ( Figs 5A, C ). Rostrum rounded. Lamella about 1/2 length of prodorsum. Prolamella, translamella and sublamella absent. Sublamellar porose area (10–12) rounded. Tutorium with apical tooth. Rostral (49–53), lamellar (90–102) and interlamellar (94–110) setae setiform, barbed, le and in with apical swollen. Exobothridial seta (20–24) setiform, slightly barbed. Bothridial seta (77–82) clavate, barbed. Dorsosejugal porose area not observed.

Notogaster ( Figs 5A, C ). All notogastral setae (dm and h 2: 57–65; others: 106–147) setiform, barbed, with apically swollen tip. Four pairs of small sacculi. Opisthonotal gland opening and all lyrifissures distinct.

Gnathosoma ( Figs 6A–D ). Subcapitulum longer than wide (86–90 × 69–73). All subcapitular (a: 16; m: 20; h: 10) and adoral (10–12) setae setiform, barbed; h thinner than a and m. Palp (61–65) with typical setation: 0-2-1-3-9 (+ω). Postpalpal seta (6) spiniform, roughened. Chelicera (98–102) with two setiform, barbed setae (cha: 32–34; chb: 20–22).

Epimeral and lateral podosomal regions ( Figs 5B, C ). Epimeral setal formula: 3-1-3-3. All setae setiform; 3c (20–24) barbed, 1b and 3b (10–12) sparsely barbed, other setae (6–8) roughened. Pedotectum II with truncate lateral part. Discidium triangular, rounded apically. Custodium present. Circumpedal carina long, reaching anteriorly pedotectum II.

Anogenital region ( Figs 5B, C ). Genital (g 1: 10–12; others: 6–8), aggenital (6–8), anal (6–8), and adanal (6–8) setae setiform, roughened. Adanal lyrifissure distinct. Marginal porose represented by numerous rounded and oval parts.

Legs ( Figs 6E–H ). Tridactylous; all claws slightly barbed on dorsal side; lateral claws thinner median claw, with small tooth distoventrally. Tibiae I and II with tubercle proximoventrally. Femur II with broadly rounded ledge distoventrally. Dorsoparaxial porose area on femora I-IV and on trochanters III, IV, proximoventral porose area on tarsi I-IV and distoventral porose area on tibiae I-IV well visible. Formulas of leg setation and solenidia: I (1-5-3-4-19) [1-2-2], II (1-4-3-4-15) [1-1-2], III (2-3-1-3-15) [1-1-0], IV (1-2-2-3-12) [0–1–0]; homology of setae and solenidia indicated in Table 1 . Famulus of tarsus I short, erect, slightly swollen distally, inserted between solenidion ω 2 and seta ft”. Solenidion ω 1 on tarsi I, ω 1 and ω 2 on tarsus II and σ on genu III bacilliform, other solenidia setiform. Seta s on tarsus I eupathidial, inserted before setae a’ and a”. Seta l” on genu I inserted on tubercle.

Type deposition. The holotype is deposited in the collection of the MUSM ; four paratypes are deposited in the collection of the TSUMZ. All specimens are preserved in 70% solution of ethanol with a drop of glycerol.

Etymology. The specific name elisabethae is given in honour of Frau Elisabeth Hintelmann (Munich, Germany) for her effort and more than generous financial support of Panguana field station since many years.

Remarks. In having long notogastral setae with apically swollen tip, the new species is similar to P. buntotanus Corpuz-Raros, 1981 , P. pilipinus Corpuz-Raros, 1981 and P. varisculptus Corpuz-Raros, 1981 from the Philippines, P. guttatoides Hammer, 1979 and P. guttatus Hammer, 1979 from the Oriental region, and P. moderatus Aoki, 1984 from Japan, but it differs from all above listed species by the presence of notogastral setae dm and h 2 distinctly shorter (versus not shorter) than other notogastral setae and lamellar seta with apical swollen (versus without swollen).

Figures

FIGURE 1. Scheloribates (Bischeloribates) eduardoi sp. nov., adult: A—dorsal view; B—ventral view (gnathosoma and legs omitted); C—lateral view (gnathosoma and legs omitted). Scale bar 50 μm.

FIGURE 2. Scheloribates (Bischeloribates) eduardoi sp. nov., adult: A—subcapitulum, ventral view; B—right lip with adoral setae, ventral view; C—palp, right, antiaxial view; D—chelicera, right, antiaxial view; E—leg I, right, antiaxial view; F—leg II (tarsus omitted), right, antiaxial view; G—leg III (tarsus omitted), left, antiaxial view; H—leg IV, left, antiaxial view. Scale bars 20 μm (A, B, D–H), 10 μm (C).

FIGURE 5. Peloribates (Peloribates) elisabethae sp. nov., adult:A—dorsal view; B—ventral view (gnathosoma and legs omitted); C—lateral view (gnathosoma and legs omitted). Scale bar 100 μm.

FIGURE 6. Peloribates (Peloribates) elisabethae sp. nov., adult: A—subcapitulum, ventral view; B—right lip with adoral setae, ventral view; C—palp, right, antiaxial view; D—chelicera, left, paraxial view; E—leg I, right, antiaxial view; F—leg II (tarsus omitted), right, antiaxial view; G—leg III (tarsus omitted), left, antiaxial view; H—leg IV, left, antiaxial view. Scale bars 20 μm (A, B, D–H), 10 μm (C).