Amblyiulus georgicus Lohmander, 1932

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/EF9858D7-FB69-56D4-9F44-AD5CF026BDF4
treatment provided by	ZooKeys by Pensoft
scientific name	Amblyiulus georgicus Lohmander, 1932
status

Treatment

Figs 1A View Figure 1 , 2 View Figure 2 , 3 View Figure 3 , 15A View Figure 15 , 16 View Figure 16

Amblyiulus georgicus Lohmander, 1932a: 180-182, figs 10-12 (D).

Amblyiulus georgicus - Lohmander 1936: 170 (M); Kobakhidze 1965: 395 (M); Lokšina and Golovatch 1979: 385 (M).

Syrioiulus georgicus - Mauriès 1984: 43 (M); Kokhia and Golovatch 2020: 207 (M).

Material examined.

Armenia: 3 ♂♂, 5 ♀♀, 2 juv. (ZMUM), SW of Shnokh halfway between Alaverdi and Bagratashen , ca. 1500 m a.s.l., Carpinus forest, litter, 24.V.1987 ; 2 ♀♀ (ZMUM), Odzun W of Alaverdi, 1500-1550 m a.s.l., Quercus , Fagus , Carpinus , etc. forest, litter and under stones with ants, 23-24.V.1987; all leg. S. Golovatch, K. Eskov.

Diagnosis.

Differs from A. hirtus sp. nov., apparently the most similar and geographically the closest congener known to date, by the following combination of somatic and gonopodal characteristics. Head without frontal setae; collum and metazonae of body rings without setae. Male mandibular stipites expanded. Promere wide, with two apical denticles. Solenomere with a membranous lobe notched apically. Rod of opisthomere relatively short. See also Key below.

Redescription.

Length of adults 27-30 mm (♂♂) or 28-31 mm (♀♀), width 1.6-1.7 mm (♂♂) or 1.7-1.9 mm (♀♀). Number of body rings in adults, 65-67+2+T (♂♂) or 67-69+2+T (♀♀). Body subcylindrical (typical of Julidae ), metazonae brownish grey, prozonae yellowish grey (Fig. 1A View Figure 1 ). Head, a few postcollum rings and telson lighter than other body rings. Collum more vividly red-brown. Antennae, mouthparts, and legs yellow (Fig. 2A-C View Figure 2 ). Eyes absent. Metazonae with weak and irregular striations, 14-16 striae between dorsal axial line and ozopore (Fig. 2D View Figure 2 ). Ozopores relatively large, with a stria in front and lying behind suture without touching it (Fig. 2H View Figure 2 ).

Antennae relatively long, in situ reaching segment 4. Head without frontal setae, but with 8+8-9+9 labral and 2+2 supralabral setae (Fig. 2A-C View Figure 2 ). Gnathochilarium with four setae on each lamella lingualis, stipites with a group of several short setae in medial part and three long setae at anterolateral margin (Fig. 2I View Figure 2 ). Collum and metazonae without setae at posterior margin (Figs 1A View Figure 1 , 2A-G View Figure 2 ). Epiproct undeveloped (Fig. 2E, F View Figure 2 ). Hypoproct subtriangular, with several long setae (Fig. 2G View Figure 2 ). Telson and anal valves sparsely setose, setae being long (Fig. 2E-G View Figure 2 ).

Male. Mandibular stipites expanded, slightly swollen in distal part (Fig. 2A View Figure 2 ). Leg pair 1 small, unciform, with a group of setae on each coxa and at base of telopodite; telopodite relatively long (Fig. 2J View Figure 2 ). Leg pair 2 with pads on postfemur and tibia (Fig. 2K View Figure 2 ). Penes short, bifurcate on top. Ventral edge of male segment 7 with elongated and rounded lamellae bordering the gonopodal aperture (Fig. 2L View Figure 2 ).

Gonopods (Fig. 3 View Figure 3 ). Promere spoon-shaped, relatively wide, constricted in basal third; mesal ridge in apical part forming a small mesal denticle (Fig. 3B, E View Figure 3 ). Lateral denticle large, well-developed. Mesomeral process simple, flattened, ribbon-shaped, notched on top (Fig. 3A, C, F View Figure 3 ). Opisthomere tripartite (Fig. 3D View Figure 3 ). Solenomere long, slightly curved, with caudomesal lamella notched apically; apical part with a fovea and a pointed membranous process. Anterior process of opisthomere appressed to solenomere, with a rounded apex. Anterolateral part of opisthomere with a helicoid rod.

Female. First two leg pairs unmodified. Vulva rounded, operculum and bursa equal in height (Fig. 15A View Figure 15 ). Operculum at apical margin oblique, undivided. Bursa asymmetric, lateral valve higher than mesal one. Each valve with two rows of long setae. Median field of bursa very short, narrow; emargination of median field suboval.

Remarks.

This species was described from Borjom (= Borjomi), Georgia ( Lohmander 1932a). The above samples represent the first formal records of this species from Armenia. It seems to populate high-montane deciduous forests in the western part of the Caucasus Minor (= Lesser Caucasus) (Fig. 16 View Figure 16 ).