# Faunistic and taxonomic additions to the oribatid mites
## (Acari, Oribatida) of Cuba

Sergey G Ermilov, Jenő Kontschán, Vasiliy B Kolesnikov, Pavel B Klimov,
Denis V Sharapov

► To cite this version:

Sergey G Ermilov, Jenő Kontschán, Vasiliy B Kolesnikov, Pavel B Klimov, Denis V Sharapov. Faunistic and taxonomic additions to the oribatid mites (Acari, Oribatida) of Cuba. Acarologia, 2023, 63 (3), pp.770-782. 10.24349/hi71-nsch. hal-04142782

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# Faunistic and taxonomic additions to the oribatid mites (Acari, Oribatida) of Cuba

Sergey G. Ermilov IDª, Jenő Kontschán IDᵇ, Vasiliy B. Kolesnikov IDª,ᶜ, Pavel B. Klimov IDª,ᵈ, Denis V. Sharapov IDª

## Original research

### ABSTRACT

The present study is based on oribatid mite materials collected from leaf litter in two forest locations in Cuba. A list of 64 species, belonging to 47 genera and 31 families, is presented. Of these, one genus and two species are recorded for the first time from the Neotropical region; 17 species, one subgenus, six genera, and two families are recorded for the first time from Cuba. Two new species of the superfamily Oripodoidea—*Lagenobates fossatus* Ermilov and Kontschán **n. sp.** (Haplozetidae) and *Muliercula curvilineata* Ermilov and Kontschán **n. sp.** (Scheloribatidae)—are described.

**Keywords** *Lagenobates*; morphology; *Muliercula*; Neotropical fauna; new record; taxonomy

Zoobank http://zoobank.org/1CFB1D46-9191-45A6-949D-040F6C915428

## Introduction

The fauna of oribatid mites (Acari, Oribatida) of Cuba remains insufficiently studied; at present, about 300 species (except Astigmata) are registered (Torre Santana & Cuervo Pineda 2019; Subías & Shtanchaeva 2021; Ermilov et al. 2021).

The primary goal of our paper is to present a list of all identified taxa including new records from two forest locations in Cuba; the secondary goal is to describe two new species belonging to the genera *Lagenobates* Weigmann and Miko, 2002 (family Haplozetidae) and *Muliercula* Coetzer, 1968 (family Scheloribatidae), based on adults.

The oribatid mite genus *Lagenobates* was proposed by Weigmann and Miko (2002), with *Oribata lagenula* Berlese, 1905 as type species. At present, the genus comprises only one species, which is distributed in the Holarctic region (Weigmann and Miko 2002). Subías (2022) considered *Lagenobates* as a subgenus of *Liebstadia* Oudemans, 1906. However, based on a set of generic traits (Weigmann and Miko 2002), we support the generic status of *Lagenobates*. Subías (2022) included *Areozetes ryabinini* Ermilov, 2018 and *Pseudoprotoribates luxtoni* Weigmann and Monson, 2004 in *Lagenobates*. However, since their morphology partially does not correspond to *Lagenobates*, we support the initial placement of these species.

The oribatid mite genus *Muliercula* was proposed by Coetzer (1968), with *Muliercula muliercula* Coetzer, 1968 as type species. At present, the genus comprises 12 species, which are collectively distributed in the Afrotropical, Neotropical and Oriental regions (Subías 2022). The main generic traits and an identification key to the known species of *Muliercula* were recently provided by Ermilov and Rybalov (2023).

Received 28 March 2023

Accepted 07 June 2023

Published 26 June 2023

Corresponding author

Sergey G. Ermilov ID: 
ermilovacari@yandex.ru

Academic editor

Baumann, Julia

https://doi.org/10.24349/hi71-nsch

ISSN 0044-586X (print)

ISSN 2107-7207 (electronic)

<figure><img src="image_7.png" /></figure>

Ermilov S. G. et al.

Licensed under
Creative Commons CC-BY 4.0

<footnote>ªTyumen State University, Institute of Environmental and Agricultural Biology (X-BIO), Tyumen, Russia.</footnote>

<footnote>ᵇDepartment of Plant Sciences, Albert Kázmér Faculty of Mosonmagyaróvár, Széchenyi István University, Mosonmagyaróvár, Hungary.</footnote>

<footnote>ᶜFederal public budgetary scientific institution All-Russian Research Institute of Plant Protection, VNIISS, Voronezh, Russia.</footnote>

<footnote>ᵈPurdue University, Lilly Hall of Life Sciences, West Lafayette, Indiana, USA.</footnote>
*Lagenobates* has not yet been registered in Cuba, and only one *Muliercula* species—*M. spora* Coetzer, 1968—is known from Cuba (Ermilov 2016).

**Material and methods**

**Material**

Samples (unknown data and collector; collection of the Tyumen State University Museum of Zoology, Tyumen, Russia; Gashev et al. 2005) were collected from two locations in Cuba:

1 – 22°1′N, 80°7′W, Cienfuegos Province, Sierra del Escambray, El Nicho, leaf litter in a mixed forest;

2 – 22°6′N, 81°6′W, Matanzas Province, leaf litter in a riparian (200 m from the Ocean) mixed forest.

**Observation and documentation**

For measurement and illustration, specimens were mounted in lactic acid on temporary cavity slides. All measurements are in micrometers. Body length was measured in lateral view, from the tip of the rostrum to the posterior edge of the notogaster; other structures were oriented to avoid parallax errors. Notogastral width refers to the maximum width in dorsal aspect. Setal lengths were measured perpendicular to their long axes, accounting for curvature. Formulas for leg solenidia are given in square brackets according to the sequence genu–tibia–tarsus. Drawings were made with a camera lucida using a Leica DM 2500 light microscope.

**Terminology**

Morphological terminology used in this paper mostly follows that of Grandjean (e.g. 1950, 1953, 1958); see Norton (1977) for leg setal nomenclature and Norton and Behan-Pelletier (2009) for overview.

**Abbreviations**

Prodorsum: *lam* = lamella; *tlam* = translamella; *slam* = sublamella; *Al* = sublamellar porose area; *tu* = tutorium; *ro, le, in, bs, ex* = rostral, lamellar, interlamellar, bothridial, and exobothridial seta, respectively; *Ad* = dorsosejugal porose area; *D* = dorsophragma; *P* = pleurophragma. Notogaster: *c, la, lm, lp, h, p* = notogastral setae; *Aa, A1, A2, A3* = porose areas; *Sa, S1, S2, S3* = sacculi; *ia, im, ip, ih, ips* = lyrifissures; *gla* = opisthonotal gland opening. Gnathosoma: *a, m, h* = subcapitular setae; *or* = adoral seta; *d, l, cm, acm, ul, su, lt, vt, inf, sup* = palp setae; *ω* = palp solenidion; *cha, chb* = cheliceral setae; *Tg* = Trägårdh's organ. Epimeral and lateral podosomal regions: *f* = furrow; *1a, 1b, 1c, 2a, 3a, 3b, 3c, 4a, 4b, 4c* = epimeral setae; *PdI, PdII* = pedotectum I and II, respectively; *cus* = custodium; *dis* = discidium; *cir* = circumpedal carina. Anogenital region: *g, ag, an, ad* = genital, aggenital, anal, and adanal seta, respectively; *iad* = adanal lyrifissure; *Amar* = marginal porose area; *po* = preanal organ. Legs: *Tr, Fe, Ge, Ti, Ta* = trochanter, femur, genu, tibia, and tarsus, respectively; *p.a.* = porose area; *ω, σ, φ* = solenidia; *ε* = famulus; *d, l, v, ev, bv, ft, tc, it, p, u, a, s, pv, pl* = setae.

**List of identified taxa**

**Ctenacaridae**

*Ctenacarus araneola* (Grandjean, 1932): 2 (7 ex.). Distribution: Tropical, Subtropical.

**Hypochthoniidae**

*Eohypochthonius crassisetiger* Aoki, 1959: 1 (3 ex.), 2 (8 ex.). Distribution: southern Palaearctic, Australasian, Cuba.
**Brachychthoniidae**

*Sellnickochthonius heterotrichus* (Balogh, 1963): 1 (8 ex.). Distribution: Afrotropical, Panama.
New record of the species in Cuba.

**Cosmochthoniidae**

*Cosmochthonius lanatus* (Michael, 1885): 2 (3 ex.). Distribution: Cosmopolitan. New record of the species in Cuba.

**Haplochthoniidae**

*Haplochthonius chamela* Mahunka and Mejía-Recamier, 1998: 2 (2 ex.). Distribution: Mexico, Iran. New record of the family, genus and species in Cuba.

**Sphaerochthoniidae**

*Sphaerochthonius splendidus* (Berlese, 1904): 2 (6 ex.). Distribution: Tropical, Subtropical.
*Sphaerochthonius windsori* Schatz, 2003: 2 (5 ex.). Distribution: northern Neotropical.

**Epilohmanniidae**

*Epilohmannia minuta* Berlese, 1920: 1 (5 ex.). Distribution: Afrotropical, Oriental, Neotropi-cal, central and eastern U.S.A. New record of the species in Cuba.

**Malaconothridae**

*Tyrphonothrus hauseri* (Mahunka, 1984): 2 (6 ex.). Distribution: Neotropical and Afrotropical.

**Nothridae**

*Nothrus gracilis* Hammer, 1961: 1 (4 ex.). Distribution: Neotropical and Oriental.

**Hermanniellidae**

*Sacculobates horologiorum* Grandjean, 1962: 2 (1 ex.). Distribution: Neotropical.

**Licnobelbidae**

Unknown genus and species: 2 (10 ex.). New record of the family in Cuba.

**Gymnodamaeidae**

*Jacotella alexandrovskiyi* Ermilov and Yurtaev, 2023: 1 (1 ex.). Distribution: Mexico. New record of the species in Cuba.

**Pheroliodidae**

*Pheroliodes wehnckei* (Willmann, 1930): 1 (1 ex.). Distribution: Neotropical. New record of the species in Cuba.

**Cepheidae**

*Reticulocepheus decoui* Vasiliu and Călugăr, 1977: 1 (1 ex.). Distribution: northern Neotropi-cal.

**Damaeolidae**

*Fosseremus laciniatus* (Berlese, 1905): 1 (4 ex.). Distribution: Cosmopolitan.
### Eremulidae

*Eremulus cf. rigidisetus* Balogh and Mahunka, 1969: 1 (1 ex.), 2 (3 ex.). Distribution: Neotropical.

*Eremulus translamellatus* Balogh and Mahunka, 1969: 2 (1 ex.). Distribution: Neotropical.

*Eremulus cf. truncatus* Hammer, 1971: 1 (2 ex.). Distribution: Oriental, Australasian, Neotropical. New record of the species in Cuba.

### Arceremaeidae

*Arceremaeus cubanus* Balogh and Mahunka, 1980: 1 (1 ex.). Distribution: Neotropical.

### Oppiidae

*Aeroppia maldivesensis* Ermilov and Joharchi, 2022: 1 (4 ex.). Distribution: Maldives. New record of the species in the Neotropical region.

*Graptoppia* sp.: 2 (4 ex.). New record of the genus in Cuba.

*Multioppia* (*Hammeroppia*) wilsoni Aoki, 1964: 2 (4 ex.). Distribution: Cosmopolitan.

*Oppiella nova* (Oudemans, 1902): 1 (2 ex.). Distribution: Cosmopolitan.

*Pseudoamerioppia barrancensis* (Hammer, 1961): 1 (18 ex.). Distribution: Neotropical, Philippines, western Africa, Canary Islands.

*Striatoppia opuntiseta* Balogh and Mahunka, 1968: 2 (7 ex.). Distribution: Tropical, Japan.

### Suctobelbidae

*Coartobelba* sp.: 2 (1 ex.). New record of the genus in Cuba.

*Suctobelbella (Flagrosuctobelba) peracuta* (Balogh and Mahunka, 1980): 1 (2 ex.). Distribution: Afrotropical, Neotropical.

*Suctobelbella (Ussuribata) variosetosa* (Hammer, 1961): 1 (6 ex.). Distribution: Tropical, Subtropical, Japan.

### Dampfiellidae

*Beckiella reticulofemorata* Balogh and Mahunka, 1979: 2 (1 ex.). Distribution: Cuba.

### Carabodidae

*Austrocarabodes* sp.: 1 (1 ex.). New record of the genus in Cuba.

*Gymnobodes* sp.: 2 (1 ex.).

*Yoshiobodes irmayi* (Balogh and Mahunka, 1969): 1 (1 ex.). Distribution: Neotropical, southern U.S.A., Oriental. New record of the genus and species in Cuba.

### Tectocepheidae

*Tectocepheus velatus* (Michael, 1880): 1 (1 ex.). Distribution: Cosmopolitan.

### Licneremaeidae

*Licneremaeus discoidalis* Willmann, 1930: 1 (3 ex.). Distribution: Neotropical. New record of the species in Cuba.

*Licneremaeus licnophorus* (Michael, 1882): 2 (12 ex.). Distribution: Holarctic, Neotropical, Oriental.

### Phenopelopidae

*Eupelops fusiformis* Ermilov, 2016: 1 (2 ex.). Distribution: Neotropical.
Microzetidae

*Berlesezetes ornatissimus* (Berlese, 1913): 1 (1 ex.), 2 (12 ex.). Distribution: Tropical, Subtropical.

*Cosmozetes cubanus* Balogh and Mahunka, 1974: 1 (2 ex.). Distribution: Cuba.

*Schalleria* sp.: 1 (3 ex.), 2 (1 ex.).

Ceratozetidae

*Ceratozetella platyrhinoides* (Hammer, 1961): 1 (1 ex.). Distribution: Neotropical. New record of the genus and species in Cuba.

Punctoribatidae

*Lamellobates botari* Balogh and Mahunka, 1977: 2 (4 ex.). Distribution: Neotropical. New record of the species in Cuba.

*Lamellobates molecula* (Berlese, 1916): 2 (9 ex.). Distribution: Tropical, Subtropical.

Mochlozetidae

*Mochlozetes penetrabilis* Grandjean, 1930: 1 (1 ex.). Distribution: Tropical, Japan. New record of the species in Cuba.

*Unguizetes incertus* (Balogh and Mahunka, 1969): 1 (2 ex.). Distribution: Neotropical.

Scheloribatidae

*Muliercula curvilineata* n. sp.: 1 (4 ex.).

*Scheloribates acutirostris* Călugăr and Vasiliu, 1983: 2 (8 ex.). Distribution: Cuba.

*Scheloribates feideri* Călugăr and Vasiliu, 1983: 2 (9 ex.). Distribution: Cuba.

*Scheloribates praeincisus* (Berlese, 1910): 2 (1 ex.). Distribution: Tropical, Subtropical.

*Scheloribates cf. rectus* Hammer, 1958: 1 (6 ex.). Distribution: Tropical. New record of the species in Cuba.

*Scheloribates (Perscheloribates) curiosus* (Ermilov, 2016): 2 (9 ex.). Distribution: Cuba.

*Scheloribates (Hemileius) suramericanus* (Hammer, 1958): 1 (1 ex.). Distribution: Neotropical, U.S.A. (Kentucky). New record of the subgenus and species in Cuba.

Haplozetidae

*Lagenobates fossatus* n. sp.: 1 (4 ex.). New record of the genus in the Neotropical region.

*Protoribates capucinus* Berlese, 1908: 1 (8 ex.), 2 (14 ex.) [population with specimens having sacculi or porose areas on the notogaster]. Distribution: Cosmopolitan. New record of the species in Cuba.

*Protoribates paracapucinus* (Mahunka, 1988): 1 (7 ex.) [population with specimens having sacculi instead porose areas on the notogaster]. Distribution: Tropical, Subtropical.

*Protoribates paramadagascarensis* Ermilov, 2016: 2 (12 ex.). Distribution: northern Neotrop-ical.

*Protoribates praeoccupatus* Subías, 2004: 2 (17 ex.). Distribution: Neotropical and eastern Palaearctic. New record of the species in Cuba.

*Rostrozetes ovulum* (Berlese, 1908): 1 (45 ex.), 2 (8 ex.). Distribution: Tropical, Subtropical.

Galumnidae

*Allogalumna brevisetosa* (Bayartogtokh and Weigmann, 2005): 1 (3 ex.). Distribution: Mongolia, southeastern China. New record of the species in the Neotropical region.

*Allogalumna cubana* Balogh and Mahunka, 1979: 1 (9 ex.). Distribution: Neotropical.

*Galumna* sp.: 1 (5 ex.).
<figure><img src="image_8.png" /><figcaption>**Figure 1** *Lagenobates fossatus* Ermilov and Kontschán *n. sp.*, adult: a – dorsal view (legs omitted); b – ventral view (gnathosoma and legs omitted); c – right lateral view (gnathosoma and legs omitted). Scale bar 50 µm.</figcaption></figure>
<figure><img src="image_9.png" /><figcaption>**Figure 2** *Lagenobates fossatus* Ermilov and Kontschán *n. sp.*, adult: a – posterior view; b – subcapitulum, ventral view; c – palp, left, paraxial 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 50 µm (a), 20 µm (b, d–h), 10 µm (c).</figcaption></figure>
*Gnathosoma* – Subcapitulum size: 60–62 × 41–45; subcapitular (*a*, *m*: 11–13; *h*: 13–15) and adoral (6) setae setiform, roughened. Palp length: 37–41; postpalpal seta (4) spiniform, smooth. Chelicera length: 60–62; setae (*cha*: 19–22; *chb*: 11–13) setiform, barbed.

*Epimeral and lateral podosomal regions* – Epimeral formula: 3–1–3–3; setae (*lb*, *3c*: 11; *1c*: 6–7; others: 7–9) setiform, smooth. Custodium, discidium and circumpedal carina well developed.

*Anogenital region* – Two thin, longitudinal furrows extend from the sternal epimeral region to the anal aperture. Genital (4–6), aggenital (6–7), anal (9–11), and adanal (9–11) setae setiform, thin, smooth. Adanal lyrifissure distinct. Marginal porose area not observed.

*Legs* – Claw of all tarsi strong, slightly barbed on dorsal side. Dorsoparaxial porose area on femora I–IV and on trochanters III, IV present; ventrodistal porose area on tibia I–IV and proximoventral porose area on tarsi I–IV not observed. Formulas of leg setation and solenidia: I (1–5–3–4–18) [1–2–2], II (1–5–2–4–15) [1–1–2], III (2–3–1–3–15) [1–1–0], IV (1–2–1–3–12) [0–1–0]; homology of setae and solenidia indicated in Table 1; famulus of tarsus I short, erect, slightly swollen distally, inserted posterior to solenidion ω₂; solenidia ω₁ on tarsus I, ω₁ and ω₂ on tarsus II and σ on genu III bacilliform, other solenidia setiform.

**Remarks** — *Lagenobates fossatus* Ermilov and Kontschán **n. sp.** differs from the single representative of the genus—*Lagenobates lagenula* (Berlese, 1905) — in the morphology of the bothridial seta (clavate, barbed versus fusiform, smooth) and in the presence (versus absence) of two longitudinal furrows in the anogenital region.

**Etymology** — The specific epithet *fossatus* is from Latin *fossa* (“furrow” or “groove”) and refers to two furrows on the ventral plate.

**Muliercula curvilineata** Ermilov and Kontschán **n. sp.**

Zoobank: A11A77C2-A76B-4756-A230-D986A5E476CB

(Figures 3, 4)

**Material** — Holotype (female) and three paratypes (two males and one female): Cuba, 22°1′N, 80°7′W, Cienfuegos Province, Sierra del Escambray, El Nicho, leaf litter in mixed forest. The holotype is deposited in the collection of the Senckenberg Museum of Natural History, Görlitz, Germany; three 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: 525–555. Notogaster and ventral plate striate. Rostrum slightly protruding, narrowly rounded. Translamella concave, shortly interrupted medially; lateral keel-shaped ridge and prolamella absent; tutrorium medium-sized. Rostral, lamellar and interlamellar setae long, setiform, barbed; ro inserted dorsally on distinct tubercle; le inserted behind lamellar end; bothridial seta clavate, barbed. All notogastral setae short, setiform, smooth. Epimeral formula: 3–1–3–2; setae short, setiform, slightly barbed. Discidium and circumpedal carina well developed. Anogenital setae short, setiform, smooth. Heterotridactylous.

**Description of adult** — Measurements — Body length: 555 (holotype: female), 525–540 (three paratypes: two males and one female); body width: 330 (holotype), 330–345 (paratypes). No difference between males and female in body size.

<table><caption>**Table 1** Leg setation and solenidia of adult *Lagenobates fossatus* Ermilov and Kontschán **n. sp.**</caption><thead><tr><th>Leg</th><th><i>Tr</i></th><th><i>Fe</i></th><th><i>Ge</i></th><th><i>Ti</i></th><th><i>Ta</i></th></tr></thead><tbody><tr><td>I</td><td><i>v'</i></td><td><i>d.</i> (<i>l</i>), <i>bv''</i>, <i>v''</i></td><td>(<i>l</i>), <i>v'</i>, σ</td><td>(<i>l</i>), (<i>v</i>), φ<sub>1</sub>, φ<sub>2</sub></td><td>(ft), (<i>tc</i>), (<i>it</i>), (<i>p</i>), (<i>u</i>), (<i>a</i>), <i>s</i>, (<i>pv</i>), <i>v'</i>, <i>pl''</i>, ε, ω<sub>1</sub>, ω<sub>2</sub></td></tr><tr><td>II</td><td><i>v'</i></td><td><i>d.</i> (<i>l</i>), <i>bv''</i>, <i>v''</i></td><td>(<i>l</i>), σ</td><td>(<i>l</i>), (<i>v</i>), φ</td><td>(ft), (<i>tc</i>), (<i>it</i>), (<i>p</i>), (<i>u</i>), (<i>a</i>), <i>s</i>, (<i>pv</i>), ω<sub>1</sub>, ω<sub>2</sub></td></tr><tr><td>III</td><td><i>l'</i>, <i>v'</i></td><td><i>d.</i> <i>l'</i>, <i>ev'</i></td><td><i>l'</i>, σ</td><td><i>l'</i>, (<i>v</i>), φ</td><td>(ft), (<i>tc</i>), (<i>it</i>), (<i>p</i>), (<i>u</i>), (<i>a</i>), <i>s</i>, (<i>pv</i>)</td></tr><tr><td>IV</td><td><i>v'</i></td><td><i>d.</i> <i>ev'</i></td><td><i>d</i></td><td><i>l'</i>, (<i>v</i>), φ</td><td><i>fi''</i>, (<i>tc</i>), (<i>p</i>), (<i>u</i>), (<i>a</i>), <i>s</i>, (<i>pv</i>)</td></tr></tbody></table>
a

<figure><img src="image_10.png" /></figure>

b

<figure><img src="image_11.png" /></figure>

<figure><img src="image_12.png" /></figure>

**Figure 3** *Muliercula curvilineata* Ermilov and Kontschán *n. sp.*, adult: a – dorsal view (legs omitted); b – ventral view (gnathosoma and legs omitted); c – right lateral view (gnathosoma and legs omitted). Scale bar 100 µm.
<figure><img src="image_13.png" /><figcaption>**Figure 4** *Muliercula curvilineata* Ermilov and Kontschán **n. sp.**, adult: a – posterior view; b – subcapitulum, 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 100 µm (a), 50 µm (b, d–h), 20 µm (c).</figcaption></figure>
*Integument* – Body color brown, partially covered by thin layer of gel-like cerotegument; lateral side of body with densely microgranulate cerotegument. Notogaster, subcapitular mentum, anogenital region (including anal plates), partially epimeral region, antiaxial side of leg femora I–IV and trochanters III, IV striate (striae medium-sized or long); central part of notogaster in one paratype with small indistinct foveolae (diameter up to 2); interlamellar region with indistinct thickenings.

*Prodorsum* – Rostrum slightly protruding, narrowly rounded (nearly pointed in one paratype). Lamella about 1/2 length of prodorsum; translamella linear, concave, shortly interrupted medially; lateral keel-shaped ridge absent; prolamella absent; tutorium well developed, medium-sized; sublamella poorly visible. Sublamellar porose area (7–11) rounded. Rostral (60–67), lamellar (116–124) and interlamellar (120–127) setae setiform, barbed; ro inserted dorsally on distinct tubercle; le inserted behind lamellar end; exobothridial seta (34–45) setiform, thin, slightly barbed; bothridial seta (64–71) clavate, barbed; length of bothridial stalk approximately equal to head. Dorsosejugal porose area present, diffuse.

*Notogaster* – Anterior notogastral margin convex medially. Pteromorph broadly rounded laterally. All setae (c: 6–7) setiform, thin, smooth. All sacculi with small opening and short, slightly elongate channel. Lyrifissures *im*, *ip*, *ih*, and *ips* distinct, *ia* poorly visible.

*Gnathosoma* – Subcapitulum size: 112–116 × 79–82; subcapitular (a: 19–22; m: 13–15; h: 22–30) and adoral (19–22) setae setiform, slightly barbed; m thinner than a and h. Palp length: 79–82; postpalpal seta (7) spiniform, smooth. Chelicera length: 124–129; setae (cha: 43–45; chb: 26–30) setiform, barbed.

*Epimeral and lateral podosomal regions* – Epimeral formula: 3–1–3–2; setae (1b, 3b: 34–37; others: 19–26) setiform, slightly barbed. Discidium and circumpedal carina well developed.

*Anogenital region* – Genital (13), aggenital (13), anal (17–19), and adanal (17–19) setae setiform, thin, smooth. Adanal lyrifissure distinct. Marginal porose area present, complete.

Legs – Heterotridactylous; all claws barbed on dorsal side; both lateral claws with small tooth distoventrally. Dorsoparaxial porose area on femora I–IV and on trochanters III, IV, ventrodistal porose area on tibia I–IV and proximoventral porose area on tarsi I–IV present. Formulas of leg setation and solenidia: I (1–5–3–4–20) [1–2–2], II (1–5–2–4–15) [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 2; famulus of tarsus I short, erect, slightly swollen distally, inserted posterior to solenidion ω₂; solenidia ω₁ on tarsus I, ω₁ and ω₂ on tarsus II and σ on genu III bacilliform, other solenidia setiform.

**Remarks** – *Muliercula curvilineata* Ermilov and Kontschán **n. sp.** differs from all other representatives of the genus in the presence (versus absence) of striae on the notogaster and in the anogenital region.

**Etymology** – The specific epithet *curvilineata* is from Latin *curva* (“curve”) and *linea* (“line”) and refers to the curved translamellar line.

<table><caption>**Table 2** Leg setation and solenidia of adult *Muliercula curvilineata* Ermilov and Kontschán **n. sp.**</caption><thead><tr><th>Leg</th><th>Tr</th><th>Fe</th><th>Ge</th><th>Ti</th><th>Ta</th></tr></thead><tbody><tr><td>I</td><td>v'</td><td>d, (l), bv'', v''</td><td>(l), v', σ</td><td>(l), (v), φ₁, φ₂</td><td>(ft), (tc), (it), (p), (u), (a), s, (pv), v', (pl), l'', ε, ω₁, ω₂</td></tr><tr><td>II</td><td>v'</td><td>d, (l), bv'', v''</td><td>(l), σ</td><td>(l), (v), φ</td><td>(ft), (tc), (it), (p), (u), (a), s, (pv), ω₁, ω₂</td></tr><tr><td>III</td><td>l', v'</td><td>d, l', ev'</td><td>l', σ</td><td>l', (v), φ</td><td>(ft), (tc), (it), (p), (u), (a), s, (pv)</td></tr><tr><td>IV</td><td>v'</td><td>d, ev'</td><td>d, l'</td><td>l', (v), φ</td><td>fi'', (tc), (p), (u), (a), s, (pv)</td></tr></tbody></table>
Acknowledgements

We are thankful to Dr. Julia Baumann (University of Graz, Graz, Austria) and two anonymous
reviewers for valuable comments. This research was funded by the Ministry of Science and
Higher Education of the Russian Federation within the framework of the Federal Scientific and
Technical Program for the Development of Genetic Technologies for 2019–2027 (agreement
№075-15-2021-1345, unique identifier RF—193021X0012).

ORCID

Sergey G. Ermilov https://orcid.org/0000-0002-0913-131X

Jenő Kontschán https://orcid.org/0000-0001-8274-4238

Vasiliy B. Kolesnikov https://orcid.org/0000-0001-6177-7858

Pavel B. Klimov https://orcid.org/0000-0002-9966-969X

Denis V. Sharapov https://orcid.org/0000-0003-4749-7336

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