Suctobelbella (Flagrosuctobelba) limonensis, Ermilov & Salavatulin, 2025

Suctobelbella (Flagrosuctobelba) limonensis sp. nov. ( Figs. 1–12 View Figures 1–2 View Figures 3–8 View Figures 9–12 )

http://zoobank.org/ urn:lsid:zoobank.org:act:AE438D9A-641F-4AC0-929A-F44C0E0E698B

Type material Holotype (male) and five paratypes (five males): locality see in Materials and methods section.

Type deposition

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

Diagnosis

Body length: 172–195. Rostrum narrowly rounded, with three pairs of anterolateral teeth. Tectopedial field complete. Rostral seta medium-sized, geniculate; lamellar, interlamellar and exobothridial setae short, setiform, nearly smooth; bothridial seta long, setiform, slightly dilated in medial part, heavily ciliated unilaterally. Medial and lateral notogastral tubercles separated. Lenticulus present. Nine pairs of notogastral setae: h 2 medium-sized, setiform, thicker than other setae, distinctly barbed; others short, setiform, c, h 1, p 1, and p 2 shortest, nearly smooth; la and lm roughened; lp and h 3 slightly barbed. Palp setation: 0-2-0-1-8(+ω). Chelicera without setae. Epimeral and anogenital setae setiform, nearly smooth; adanal seta ad 1 inserted laterally to anal aperture; distance ag–ag larger than ad 3 – ad 3. Both laterosejugal tubercles present.

Description

Measurements – Body length: 187 (holotype), 172–195 (paratypes); notogaster width: 94 (holotype), 90–98 (paratypes).

Integument – Body color light brown. Body surface mainly smooth but anterior, interbothridial and lateral parts prodorsum partially with microtuberculate cerotegument.

Prodorsum – Rostrum slightly protruding, narrowly rounded, with three strong anterolateral teeth (anterior tooth smallest) on each side. Tectopedial field complete. Median knob-like tubercle well developed. Rostral seta (26–32) geniculate, ciliate in median part; lamellar (11), interlamellar (5–7) and exobothridial (5–7) setae setiform, nearly smooth; bothridial seta (49–56) setiform, slightly dilated in medial part, heavily ciliated unilaterally. Medial and lateral prodorsal tubercles simple.

Notogaster – Dorsosejugal suture complete, straight. Medial and lateral notogastral tubercles well separated; medial tubercle simple; lateral tubercle triangular. Lenticulus present, but slightly observable. Nine pairs of notogastral setae developed: c, h 1, p 1, and p 2 (11) setiform, nearly smooth; la and lm (13) setiform, roughened; lp and h 3 (13–15) setiform, slightly barbed; h 2 (19–22) setiform, thicker than other setae, distinctly barbed; lm located laterally to la. Opisthonotal gland opening and lyrifissures ia and im distinct; lyrifissures ip, ih and ips not observable.

Gnathosoma – Subcapitulum size: 60–64 × 30–34; setae (a, h: 17–19; m: 11–13) setiform, smooth; both adoral setae not observable. Palp length: 45–49; setation: 0-2-0-1-8(+ω); solenidion short, bacilliform, located in distal part of tarsus and connected with mediobasal part of fused setae ul; postpalpal seta not observable. Chelicera length: 60–64; cheliceral setae (cha, chb) absent; teeth of cheliceral digits not developed.

Epimeral and lateral podosomal regions – Epimeral setal formula: 3-1-3-3; setae (1a, 2a, 3a: 5–7; 1b, 3b, 4a, 4b, 4c: 11; 1c, 3c: 13) setiform, smooth. Both laterosejugal tubercles simple. Discidium rounded in dorsal aspect.

Anogenital region – Anogenital setal formula: 6-1-2-3; genital (g 1: 13–15; g 2: 11; others: 5–7), aggenital (11), anal (11), and adanal (11) setae setiform, nearly smooth; adanal seta ad 1 inserted laterally to anal aperture; distance between ag–ag larger than ad 3 – ad 3. Adanal lyrifissure close and parallel to anal plate.

Legs – Claw strong, smooth. Porose area on all segments not observable. Formulas of leg setation and solenidia: I (1-5-2-4-20) [1-2-2], II (1-5-2-4-14) [1-1-2], III (2-3-1-3-13) [1-1-0], IV (1-2-2-3- 10) [0-1-0]; homology of setae and solenidia indicated in Table 1; solenidia φ 1 on tibia I and σ on genu I subflagellate; ω 2 medium-sized, setiform; other solenidia slightly thickened, rounded distally; setae a', a'' and s on tarsus I eupathidial-like; setae a', s and pv' on tarsus II and a'', s and pv'' on tarsus III thickened, with strong ventral cilia; setae a'' and pv'' of tarsus IV brush-like.

Comparison

Suctobelbella (Flagrosuctobelba) limonensis sp. nov. is similar to the large group of the Suctobelbella (Flagrosuctobelba) species having thickened and barbed notogastral setae h 2 (e.g., S. (F.) crassisetosa Ermilov, 2024 (see 2024a); S. (F.) multiplumosa ( Hammer, 1979) ; S. (F.) penicillata ( Balogh & Mahunka, 1966); S. (F.) semiplumosa ( Balogh & Mahunka, 1967) etc.). However, these setae sparsely barbed (versus heavily barbed) and only they among notogastral setae have distinct barbs (versus two or more pairs of notogastral have distinct barbs) in the new species.

Etymology The species name limonensis refers to the place of origin, the vicinity of El Limón waterfall.