Unguizetes (Knorozovia) ershovae, ErmilovK & YurtaevK, 2023

ErmilovK, Sergey G. & YurtaevK, Andrey A., 2023, Unguizetes (Knorozovia) ershovae (Acari, Oribatida, Mochlozetidae), a new oribatid mite subgenus and species from Mexico, Acarologia 63 (4), pp. 1187-1196 : 1189-1193

publication ID	https://doi.org/ 10.24349/r0vq-kaq5
publication LSID	lsid:zoobank.org:pub:7D3FB050-7F63-4EAB-9279-84166B14DC0D
persistent identifier	https://treatment.plazi.org/id/48008791-A23A-FFD6-FE63-FD9C085399AF
treatment provided by	Felipe
scientific name	Unguizetes (Knorozovia) ershovae
status	sp. nov.

Treatment

Unguizetes (Knorozovia) ershovae n. sp.

Zoobank: DA26D698-E8B0-4FE5-AAE3-8669ED54D294

( Figures 1–4 View Figure 1 View Figure 2 View Figure 3 View Figure 4 )

Material examined — Holotype (female) and five paratypes (three males and two females): Mexico, 20°41′N, 87°03′W, Quintana Roo, Municipio de Solidaridad, vicinities of Playa del Carmen, leaf litter under trees and bushes in secondary semi-evergreen tropical forest (date and collector unknown; collection of the Tyumen State University Museum of Zoology , Tyumen, Russia ; Gashev et al. 2005). GoogleMaps

Type deposition — The holotype is deposited in the collection of the Senckenberg Museum of Natural History, Görlitz, Germany ; five paratypes are deposited in the collection of the Tyumen State University Museum of Zoology, Tyumen, Russia. All specimens are preserved in 70% solution of ethanol with a drop of glycerol.

Diagnosis — Body length: 585–690. Notogaster distinctly striate, partially forming reticulate ornamentation. Cusp of lamella with lateral tooth; translamella straight, comparatively broad; tutorium without cusp, directed to insertion of rostral seta. Rostral, lamellar and interlamellar setae long, setiform, barbed; ro shortest, in longest; bothridial seta long, with slightly developed, fusiform, barbed head. Dorsosejugal suture undulate. Pteromorph well developed. Notogastral porose areas rounded; A1 and A2 located close to each other. Fourteen pairs of notogastral setae as alveoli. Palp setae lt′, lt″, vt′, vt″ on tarsus and l′, l″ on genu short. Custodium long, narrowly triangular. Discidium broadly triangular. Epimeral, genital and aggenital setae medium-sized to comparatively short, setiform, slightly barbed; anal and adanal setae minute, setiform, roughened. Adanal lyrifissure located close and slightly diagonal to anal plate.

Description of adult — Measurements – Body length: 690 (holotype), 585, 600, 630

(male paratypes), 675, 690 (female paratypes); notogaster width (level of pteromorphs): 510 (holotype), 435, 450, 465 (male paratypes), 495, 510 (female paratypes); ventral plate width:

480 (holotype), 420, 435, 435 (male paratypes), 465, 480 (female paratypes).

Integument ( Figs 1a, 1c, 1d View Figure 1 , 3c, 3d View Figure 3 , 4b View Figure 4 ) – Body color brown. Body and legs covered by thin layer of gel-like cerotegument; lateral side of body partially with microgranulate cerotegument. Surface densely microfoveolate (visible in dissected specimens under high magnification, 10 × 100); lamella entirely slightly striate ( Fig. 3c View Figure 3 ); notogaster distinctly longitudinally striate ( Fig. 4b View Figure 4 ), forming in anterior part reticulate ornamentation ( Fig. 3d View Figure 3 ).

Prodorsum ( Figs 1a, 1c View Figure 1 , 3a–3d View Figure 3 , 4a View Figure 4 ) – Rostrum broadly rounded. Lamella (including cusp) about 1/2 length of prodorsum, with short cusp having distinct lateral tooth; translamella straight, comparatively broad; tutorium about 1/2 length of prodorsum, lamelliform, without cusp. Sublamellar porose area oval (9–11 × 6–7). Rostral (75–82), lamellar (120–127) and interlamellar (165–176) setae setiform, barbed; ro inserted on tutorial end; bothridial seta (109–116) with long stalk and short, slightly developed, fusiform, barbed head; exobothridial seta (37–45) setiform, thin, barbed. Dorsosejugal porose area not observed.

Notogaster ( Figs 1a, 1c, 1d View Figure 1 , 3a, 3b View Figure 3 , 4a View Figure 4 ) – Dorsosejugal suture strong, undulate. Pteromorph broadly rounded laterally. Four pairs of rounded porose areas (11–15); A1 and A2 located comparatively close to each other, both in lateral position but A1 anteromedial to A2. Fourteen pairs of notogastral setae represented by alveoli. Opisthonotal gland opening and all lyrifissures distinct.

Gnathosoma ( Figs 2a–c View Figure 2 ) – Subcapitulum size: 150–161 × 97–101; subcapitular (a, h:

22–26; m: 41–49) and adoral (11) setae setiform, thin, barbed. Palp length: 116–120; setation:

0–2–1–3–9(+ω); setae (lt), (vt) on tarsus and (l) on genu short; postpalpal seta (6) spiniform, – bothridial seta, bothridium and anterior part of notogaster, dorsolateral view. Scale bars 100 μm (a, b), 20 μm (c, d).

roughened. Chelicera length: 172–187; setae (cha: 52–56; chb: 32–34) setiform, barbed.

Epimeral and lateral podosomal regions ( Figs 1b, 1c View Figure 1 , 4a View Figure 4 ) – Epimeral setal formula: 3–1– 3–3; all setae (3c: 37–45; 1b, 3b: 34–41; 1a, 2a, 3a, 4a, 4b: 26–30; 1c, 4c: 13–15) setiform, thin, slightly barbed; 1c, 4a, 4b, 4c thinner than others. Humeral porose areas Am and Ah elongate oval, slightly visible ( Fig. 1c View Figure 1 ). Custodium long, narrowly triangular. Discidium broadly triangular. Circumpedal carina long, distally fused to custodium.

Anogenital region ( Figs 1b, 1c View Figure 1 ) – Genital and aggenital setae (22–26) setiform, thin, slightly barbed; anal and adanal setae (11) setiform, thin, roughened. Adanal lyrifissure located close

5 μm (b), 20 μm (c).

and slightly diagonal to anterior half of anal plate, posterior ad to 3. Marginal porose area not observed.

Legs ( Figs 2e, 2d View Figure 2 , 4a, 4c View Figure 4 ) – Generally, typical for Unguizetes (e.g., Ermilov 2016, 2017). Median claw distinctly thicker than lateral claws, all slightly barbed dorsally; each lateral claw with small tooth ventrodistally. Dorsoparaxial porose area on femora I–IV, trochanters III, IV, ventrodistal porose area on tibia I–IV and proximoventral porose area on tarsi I–IV well visible. Formulas of leg setation and solenidia: I (1–5–3–4–20) [1–2–2], II (1–5–3–4–15) [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.

Etymology — The species is named in honor of Galina Gavrilovna Ershova, a worldrenowned Russian historian, anthropologist and epigrapher specializing in the study of the ancient civilizations, cultures, and languages of the New World. She is a disciple of Yu.V. Knorozov and currently continues to successfully develop his scientific ideas.