Syrioiulus taliscius (Attems, 1927)

Evsyukov, Aleksandr P., Golovatch, Sergei I. & Antic, Dragan Z., 2021, The millipede genera Amblyiulus Silvestri, 1896 and Syrioiulus Verhoeff, 1914 in the Caucasus, with notes on their distributions (Diplopoda, Julida, Julidae), ZooKeys 1048, pp. 109-143 : 109

publication ID	https://dx.doi.org/10.3897/zookeys.1048.68454
publication LSID	lsid:zoobank.org:pub:FC201D04-9877-4583-92C2-84CC80BB75A5
persistent identifier	https://treatment.plazi.org/id/366D2F9E-79FA-5C68-BFAE-74A6DE9E6FBC
treatment provided by	ZooKeys by Pensoft
scientific name	Syrioiulus taliscius (Attems, 1927)
status

Treatment

Figs 1E View Figure 1 , 8C, D View Figure 8 , 11 View Figure 11 , 12 View Figure 12 , 15E View Figure 15 , 16 View Figure 16

Amblyiulus taliscius Attems, 1927: 243, 244, figs 336-338 (D).

Amblyiulus taliscius - Lohmander 1932b: 182 (M); 1936: 170 (M); Rakhmanov 1972: 116 (R); Lokšina and Golovatch 1979: 385 (M); Bababekova 1996: 90 (M).

Syrioiulus taliscius - Mauriès 1982: 441 (M); 1984: 43 (M); Vagalinski 2020: 92 (M).

Material examined.

Azerbaijan: 4 ♂♂, 14 ♀♀, 1 juv. (ZMUM), Talysh, Joni , 1500 m a.s.l., 28-29.V.1976, leg. V.G. Dolin ; 2 ♂♂ (ZMUM), Lenkoran, Hyrcan Nature Reserve, Telman , 28.IV.1984 ; 1 ♂, 1 ♀ (ZMUM), same locality, Gaftoni , 9.V.1984, all leg. H. Aliev ; 1 ♀ (ZMUM), Hyrcan forest, Khan Bulan River near Alexeevka , 22.IV.1985, leg. E.B. Kupriyanova ; 3 ♂♂, 12 ♀♀ (ZMUM), same locality, Avrora, Moscow-Forest , 50 m a.s.l., 1.VI.1996 ; 3 ♂♂, 3 ♀♀, 1 juv. (ZMUM), same locality, Apo below Bilasar , 350 m a.s.l., 8-9.VI.1996, all leg. S. Golovatch ; 1 ♂ (SMNG), Lǝnkǝran rayon, Siyablı, Parrotia , Zelkova , Quercus coppice, steep slope, 110 m a.s.l., 38.7170°N, 48.7253°E GoogleMaps ; 1 ♂ (IZB), Lerik rayon, Hyrcan Nature Reserve , road Lǝnkǝran-Lerik at km 32, small side valley, forest of Parrotia with some Quercus , thick leaf litter, 400 m a.s.l., 38.7638°N, 48.5819°E GoogleMaps ; 7 ♀♀ (IZB), 7 ♀♀ (SMNG), Astara rayon, Hyrcan Nature Reserve , SW of Zünqüləş, end of small valley, steep slope, Parrotia , Quercus , Acer trees, under leaves and rotten tree trunks, 130 m a.s.l., 38.4480°N, 48.7597°E GoogleMaps ; 2 ♂♂, 1 ♀, 1 juv. (IZB); 2 ♂♂, 2 ♀♀, 1 juv. (SMNG), Lǝnkǝran rayon, Hyrcan Nature Reserve, Daştatük 1.3 km Xanbulan Reservoir, Parrotia forest, divers bushes, under leaves, 110 m a.s.l., 38.6747°N, 48.7622°E GoogleMaps ; 3 ♂♂, 2 ♀♀, 1 juv. (IZB); 5 ♂♂ (1 SEM), 3 ♀♀ (1 SEM), 1 juv. (SMNG) Lǝnkǝran rayon, Hyrcan Nature Reserve , SW of Aşağı Apu, Quercus forest, within leaves and rotten wood, 180 m a.s.l., 38.6726°N, 48.7362°E, all leg. F. Walther, H. Reip, D. Antić GoogleMaps ; 1 ♂ without gonopods (ZMUM), Shemakha Distr., farm Guseinzade , foothills, Vitis , summer 1982, leg. A. Ismailov ; 1 ♀ (ZMUM), Zakataly Distr., Geyam , cornfield, 17.IV.1986, leg .?; 7 ♂♂, 5 ♀♀ (ZMUM), Baku, City parks, 18-21.V.1981 ; 1 ♂ (ZMUM), Belokani near Zakatali , 600 m a.s.l., village garden, 24.V.1981 ; 1 ♀ (ZMUM), above Akhsu 120 km W Baku, 900 m a.s.l., Quercus shrub, 22.V.1981, all leg. S. Golovatch and J. Martens ; 1 ♀ (ZMUM), ca. 14 km W of Ismailly, Galyhjakh , under bark, 1.V.1987 ; 1 ♀ (ZMUM), Altyagach , 1050-1100 m a.s.l., Quercus , Fagus , Carpinus , etc. forest, litter, 20 and 26.IV.1987, all leg. S.Golovatch and K. Eskov ; 3 ♂♂, 5 ♀♀, 1 juv. (IZB); 3 ♂♂, 5 ♀♀ (SMNG), İsmayıllı rayon, Topçu 7.8 km towards Vəndam, flat area with old Fagus forest, under leaves and dead wood, 630 m a.s.l., 40.9193°N, 48.0027°E GoogleMaps ; 1 ♂ (SMNG), İsmayıllı rayon, Xanəgah 2 rkm towards İsmayıllı, flat area with old Fagus forest, with channels, under leaves, 650 m a.s.l., 40.8233°N, 48.1518°E GoogleMaps ; 1 ♀ (SMNG), İsmayıllı rayon, S of Zərgəran, slope with Corylus , Clematis and some Prunus trees, stone heaps overgrown by moss, mainly in thick leaf litter and under stones, 880 m a.s.l., 40.7310°N, 48.3680°E, all leg. F. Walther, H. Reip, D. Antić. GoogleMaps

Diagnosis.

Differs from all congeners by the following combination of somatic and gonopodal characters. Head without frontal setae. Collum and metazonae of following body rings without setae. Eyes absent. Solenomere in apical part with a group of small spines. Anterior process of opisthomere subtriangular apically.

Redescription.

Length of adults 26-33 mm (♂♂) or 26-34 mm (♀♀), width 1.2-1.3 mm (♂♂) or 1.2-1.4 mm (♀♀). Number of body rings in adults, 50-65+1-2+T (♂♂) or 49-70+1-2+T (♀♀). Body subcylindrical (typical of Julidae ), live specimens with brownish grey pro- and metazonae (Fig. 8C, D View Figure 8 ), after storage in alcohol prozonae grey, metazonae yellow (Fig. 1E View Figure 1 ). Head, collum, a few postcollum rings, last body rings, telson and anal valves yellow (Figs 1E View Figure 1 , 8C, D View Figure 8 ). Antennae, mouthparts, and legs light yellow (Fig. 11A-G View Figure 11 ). Eyes absent. Striations of metazonae deep, not reaching the caudal margin, 23-25 striae per quarter of metazonital surface, i.e., that between dorsal axial line and ozopore (Fig. 11D View Figure 11 ). Ozopores small, lying behind suture without touching it (Fig. 11H View Figure 11 ).

Antennae relatively long, in situ reaching segment 3. Head without frontal setae, 9+9-12+12 labral and 2+2 supralabral setae (Fig. 11A-C View Figure 11 ). Collum and metazonae without setae (Fig. 11A-G View Figure 11 ). Gnathochilarium with 3-4 long setae on each lamella lingualis, stipites with a medial curved row of 4-5 thick setae and three long setae at anterolateral margin (Fig. 11I View Figure 11 ). Epiproct undeveloped (Fig. 11E, F View Figure 11 ). Hypoproct rounded, with several setae (Fig. 11G View Figure 11 ). Telson covered with long setae, anal valves densely setose.

Male. Mandibular stipites unmodified (Fig. 11A View Figure 11 ). Leg pair 1 small, unciform, telopodites directed anteromesad (as in most Julidae ), with long setae on each coxa and in basal part of telopodite (Fig. 11J View Figure 11 ). Leg pair 2 with pads on postfemur and tibia (Fig. 11K View Figure 11 ). Penes short, bifurcate. Ventral edge of male pleurotergum 7 with wide curved lamellae bordering the gonopodal aperture (Fig. 11L View Figure 11 ).

Gonopods (Fig. 12 View Figure 12 ) with anterior and posterior parts both equal in height. Promere spoon-shaped, constricted in basal third; mesal ridge relatively narrow along 2/3 extent; with denticles in apical part: mesal denticle small and broadly rounded, lateral one well-expressed and long (Fig. 12B, H View Figure 12 ). Mesomeral process simple, slightly curved, with a wide subquadrate lamella apically (Fig. 12A, C, G, I View Figure 12 ). Opisthomere bipartite. Solenomere elongated, with a caudomesal, notched, membranous lobe, in apical part with a fovea and a group of small spines (Fig. 12A, C-F View Figure 12 ). Fovea may be equipped with a filiform process (Fig. 12E View Figure 12 ). Anterior process subtriangular apically.

Female. First two leg pairs unmodified. Operculum of vulva without setae on caudal surface, apical margin poorly divided (Fig. 15E View Figure 15 ). Bursa mostly symmetric, lateral valve slightly larger than mesal one. Each valve with two rows of long setae. Median field of bursa narrow; emargination of median field suboval.

Remarks.

This species was described from the Talysh Mts, Lenkoran, Azerbaijan ( Attems 1927). In the Caucasus, this is probably one of the most common and widespread congeners. Like S. continentalis , it inhabits various deciduous forests, but it can only be considered as subendemic to the Hyrcanian biogeographic province (Fig. 16 View Figure 16 ).