Cimmerosiro rhodiensis Karaman & Mitov & Snegovaya 2024, gen. et sp. nov.
Creators: name: Karaman, Ivo M.
name: Mitov, Plamen G.
name: Snegovaya, Nataly
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Opiliones
Sironidae
Cimmerosiro
Cimmerosiro rhodiensis

description: Cimmerosiro rhodiensis gen. et sp. nov.
urn:lsid:zoobank.org:act: 5B581EC5-9155-44F1-9A48-1477669D4F04
Figs 1D–E, 2F, 12C, 21–25
Diagnosis
Small species (1.10–1.18 mm) with narrow, elongated body; in females posteriorly with protrusion of duck-bill form. Integument granulation with densely distributed first rank granules of irregular form. Adenostyle elongated, with long filiform distal processus. Spermatopositor elongated. Claws I without denticles. Claws III with prolateral comb-like row of 4–5 denticles.
Etymology
The name of this species is the adjective ‘rhodiensis’, based on the island of Rhodes, where this species was found.
Material examined
Holotype
GREECE • ♂; Epta Piges, Rhodes; 36°15ʹ7.24ʺ N, 28°6ʹ42.69ʺ E; 120 m a.s.l.; 20 Apr. 2022; I. Karaman and M. Horvatović leg.; CIK 1542/1.
Paratypes
GREECE • 2 ♂♂, 10 ♀♀, 6 juvs; same collection data as for holotype; CIK 1542/2 • 1 ♂, 1 ♀; same collection data as for holotype; CJM 9582 (SMF) • 1 ♂, 1 ♀; same collection data as for holotype; CPM • 3 ♀♀; Epta Piges, Rhodes; 9 Apr. 1977; C. Besuchet leg.; MHNG-ARTO-0034049.
Description
Male
BODY. If not otherwise stated, measurements for the male holotype. Body length 1.15 mm (males: 1.10– 1.15 mm). Body uniformly light brown in color. Dorsum narrow (Fig. 21A), elongated (more than twice as long as wide), posteriorly conically pointed; anterior margin of prosoma short and slightly protruded, concave; anterolateral margins long, sinuate. Ozophores narrow, slightly longer than wide at their bases, laterally orientated (type 1). Integument densely granulated with first rank granules of irregular forms (Fig. 22B–F).
CHELICERAE (Fig. 24A). Slightly elongated, smooth; basal article 0.49 mm long; second article 0.45 mm long; transverse ridge rises more gradually than sharply from dorsal depression, ventral bulge emphasized. Second article almost 4 times as long as wide. Teeth on fiXed finger (6) and movable finger (7) tightly spaced.
PEDIPALPS (Fig. 24B). Of normal proportions, 0.77 mm long without coxa and apotele; trochanter elongated, longer than patella, as long as tibia; tarsus longer than tibia; apotele elongated. Sensilla closer to basal part of coxae. Ornamented astragalus and smooth calcaneus.
VENTRAL PROSOMAL COMPLEX (Fig. 21B). Coxal lobes II as wide anteriorly as at posterior end. Coxal lobes III more than twice as wide as long; slightly protruded medially at an obtuse angle. Coxal lobes IV slightly longer than wide at their narrowest part; posteriorly with almost parallel sides, widened with conical processes situated laterally on frontal margin of gonostome.
LEGS. Basitarsi I–II with ornamented astragalus occupying about a third of their length (Fig. 23A–B); basitarsi III–IV fully ornamented. Telotarsus I elongated, L/W ratio: 3; telotarsus II L/W ratio slightly more than 2.5. Telotarsus IV elongated, with adenostyle at end of basal half of its length (Fig. 23C); adenostyle with long filiform distal processus (Fig. 23D). Claws II without denticles; claws III with prolateral comb-like row of 4 elongated denticles and 2 small retrolateral denticles; claws IV with 2 small denticles. Measurements of legs (without coxae and claws, in mm): I 1.24; II 1.02; III 0.88; IV 1.10.
SPERMATOPOSITOR (Fig. 25). Narrow, elongated (more than 2 times as long as wide) with short and wide terminal lobe. Medial pair of setae terminales (4) much longer than lateral pair; setae dorsales (4) long, length of medial pair exceeding terminal lobe. Three setae laterales on each side. Setae ventrales (3) short, medial one located lower; digiti mobiles mediales taper conically towards fimbriated tip; digiti mobiles laterales elongated, with wide serrated tip.
Female
Body length 1.10–1.18 mm. Dorsum narrow, elongated (twice as long as wide) (Fig. 21D); posteriorly with protrusion of duck-bill form which frames corona analis on ventral side (Figs 21F, 22A); coxal lobes II–III as in male (Fig. 21E). Ovipositor apical lobes short (Fig. 12C), two times as long as terminal article. Terminal article as long as wide at its base. Receptacles orifices located subterminally on apical lobes. Receptacles of saccate form, tapering towards bottom. Terminal setae shorter than apical lobes. Subterminal mediodistal setae two-thirds the length of terminal setae.
Measurements of legs, without coxae and claws (in mm) (female of 1.18 mm body length): I 1.21; II 1.01; III 0.82; IV 1.07.
Remarks
Cimmerosiro juberthiei gen. et sp. nov. and C. krivolutskyi gen. et sp. nov. are closely related and they represent the Cimmerosiro fauna of the Menderes Platform (MP) of the Anatolide-Tauride Block (ATB) (Fig. 27C). Cimmerosiro rhodiensis gen. et sp. nov. is significantly morphologically different from both these species and is probably phyletically significantly distant from them as well. It could represent the Cimmerosiro fauna of the Tauride Platform (TP) of the same Block.
description: Published as part of Karaman, Ivo M., Mitov, Plamen G. & Snegovaya, Nataly, 2024, Parasironidae fam. nov., a Cimmerian lineage of Mediterranean Cyphophthalmi (Opiliones), with the description of three new genera and four new species, pp. 173-209 in European Journal of Taxonomy 921 (1) on pages 197-203, DOI: 10.5852/ejt.2024.921.2427, http://zenodo.org/record/10656519