Nesozetes membranus Ermilov & Hugo-Coetzee & Theron & Behan-Pelletier 2017, sp. nov.
Creators: name: Ermilov, Sergey G.
name: Hugo-Coetzee, Elizabeth A.
name: Theron, Pieter D.
name: Behan-Pelletier, Valerie M.
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Sarcoptiformes
Nesozetidae
Nesozetes
Nesozetes membranus

description: Nesozetes membranus sp. nov.
(Figs 1–29)
Diagnosis. Body size: 249–265 × 124–132. Lateral sides of body with two pair of membranes, first pair located laterally on prodorsum, second pair located in podosomal regions. Subcapitular mentum and posterior part of notogaster slightly striate. Rostral, lamellar and interlamellar setae long, setiform, with short attenuate tips, slightly barbed. Bothridial setae setiform, tapered, barbed. Notogastral setae thin, smooth, with setae p 1 three times longer than the other notogastral setae. Subcapitular setae setiform, hardly barbed, a longest and thickest. Palpal setae sul dilated distally. Epimeral and anogenital setae short, thin, smooth. Claw of each leg serrate dorsally.
Description. Measurements. Body length: 265 (holotype: female), 249–265 (17 paratypes: 16 females and one male); notogastral width: 132 (holotype), 124–132 (17 paratypes).
Integument (Figs 1, 6, 7, 15, 16, 19, 20, 23, 25, 26). Body color light brown to light yellow. Body surface sparsely microporose (Visible under high magnification, × 1000). Prodorsum, podosomal regions, anterolateral and posterolateral parts of Ventral plate densely microtuberculate, tubercles (up to 1) rounded or elongated. Subcapitular mentum and posterior part of notogaster near insertions of setae p 1 striate. Body laterally with two pairs of colorless, rigid (not elastic) cerotegumental bands, forming membranes: anterior membranes attached distally near to insertions of rostral setae and attached basally between bothridia and acetabula II; posterior pair of bands attached distally between bothridia and acetabula II and attached basally to posterior of circumpedal carinae.
Prodorsum (Figs 1–3, 5, 15–18). Rostrum rounded. Lamellae narrow. Prolamellae lineate basally, poorly Visible distally. Sublamellae clearly shorter than lamellae. Sublamellar porose areas Al oVal (12–16 × 8). Rostral (24–32), lamellar (41–45) and interlamellar (61–69) setae setiform, with short attenuate tips, slightly barbed. Indistinct, conVex furrow present between insertions of interlamellar setae. Bothridial setae (20–24) setiform, tapered, barbed. Anterolateral wall of bothridia with small scale. Exobothridial setae minute (2), positioned laterally, closer to acetabulum II than to bothridium (Fig. 3). Dorsophragmata elongated longitudinally, appearing subdiVided. Pleurophragmata clearly Visible.
Notogaster (Figs 1–4, 6, 15, 23, 24). Anterior notogastral margin strongly conVex medially. Notogastral setae setiform, thin, smooth, p 1 (30–32) distinctly longer than other setae (10–12). Porose areas round (4–6), Aa located medial to setae la, A2 anterolateral to setae h 1. All lyrifissures, opisthonotal gland openings, circumgastric scissure and circumgastric sigillar band distinct.
Gnathosoma (Figs 2, 7–9, 26, 27). Subcapitulum longer than wide (61–65 × 45–53). Subcapitular setae setiform, hardly barbed, a (18–20) longer and thicker than h (12); m (6) shortest and thinnest. Two pairs of adoral setae (6) dilated distally, barbed. Palps (length 41) with typical setation 0–2–1–3–9(+ω). Setae sul dilated distally. Postpalpal setae (4) spiniform, smooth. Chelicerae (length 61–65) with two setiform, barbed setae, cha (22–24) longer than chb (16). Antiaxial sides with seVeral minute teeth. Trägårdh’s organ elongate triangular, pointed.
Epimeral and lateral podosomal regions (Figs 2–4, 25). Epimeral setal formula: 3–1–2–1. Setae 1c represented by alVeoli, other setae setiform, thin, smooth, 1a, 2a, 3a (6) shorter than 1b, 3b, 4a (10–12). Pedotecta I, II, discidia and circumpedal carinae of typical form for the family.
Anogenital region (Figs 2–4, 6, 10, 21, 22). Four pairs of genital (6–8), two pairs of anal (8–10) and two pairs of adanal (8–10) setae setiform, thin, smooth. Adanal lyrifissures and preanal organ distinct. OVipositor elongated (81–89 × 24), blades (28–32) shorter than length of distal section (beyond middle fold; 53), ψ1 = τ1 (10–12) setiform, smooth, longer than minute, spiniform τ a = τ b (2). Setae ψ2 and τ c absent. Six coronal setae thorn-like (4).
Legs (Figs 11–14, 28, 29). Claw of each leg dorsally serrate. Dorsoparaxial porose areas on femora I–IV and trochanters III, IV clearly Visible; porose areas on tarsi and tibiae absent. Formulas of leg setation and solenidia: I (0– 4–2–3–13) [1–2–2], II (0– 4–2–2–12) [1–1–1], III (0–3–0–2–11) [1–1–0], IV (0– 1–1–2–10) [0–1–0]; homology of setae and solenidia indicated in Table 1. Solenidia ω1 on tarsi I and ω on tarsi II setiform, blunt-ended, σ on genua III bacilliform, other solenidia simple, pointed. Tibiae II with one solenidion. Famulus short, straight, bluntended, inserted posterior to solenidia ω2. Leg setation reduced: tarsi I, II without setae (a), tc’; tarsi III without setae (it), (a); tarsi IV without setae (a); tibiae I without setae v”; tibiae II without setae l”, v”; tibiae III, IV without setae l’; genua III and trochanters without setae; genua IV with one seta d. Dorsal setae d of all femora long, Very strong, heaVily barbed.
Roman letters refer to normal setae, Greek letters to solenidia (except ɛ = famulus). Single prime (’) marks setae on anterior and double prime (”) setae on posterior side of the given leg segment. Parentheses refer to a pair of setae.
Type deposition. The holotype (ethanol with drop of glycerol) is deposited in NMB; three paratypes (ethanol with drop of glycerol) are deposited in SMNH; 14 paratypes (ethanol with drop of glycerol) are deposited in TSUMZ.
Etymology. The specific name membranus refers to the presence of lateral podosomal cerotegumental membranes in the new species.
Differential diagnosis. Nesozetes membranus sp. nov. differs from the type species, N. rostropterus by the presence of a second pair of cerotegumental membranes located in the podosomal region (Versus second pair of cerotegumental membranes absent in N. rostropterus), setiform bothridial setae (Versus bothridial setae spindleshaped in N. rostropterus) and striate subcapitular mentum (Versus subcapitular mentum not striate in N. rostropterus).
description: Published as part of Ermilov, Sergey G., Hugo-Coetzee, Elizabeth A., Theron, Pieter D. & Behan-Pelletier, Valerie M., 2017, Contribution to the knowledge of the oribatid mite family Nesozetidae (Acari, Oribatida), pp. 311-327 in Zootaxa 4358 (2) on pages 313-324, DOI: 10.11646/zootaxa.4358.2.5, http://zenodo.org/record/1068469