Dentatosoma zeraboseli

Antić, Dragan Ž. & Makarov, Slobodan E., 2016, The Caucasus as a major hotspot of biodiversity: Evidence from the millipede family Anthroleucosomatidae (Diplopoda, Chordeumatida), Zootaxa 4211 (1), pp. 1-205 : 107-112

publication ID

https://doi.org/10.11646/zootaxa.4211.1.1

publication LSID

lsid:zoobank.org:pub:6B86C6BA-6AFE-4AAD-870D-04794C138D47

DOI

https://doi.org/10.5281/zenodo.6074431

persistent identifier

https://treatment.plazi.org/id/03B7878C-FFBD-CD51-FF4C-E98AB3A2ED59

treatment provided by

Plazi

scientific name

Dentatosoma zeraboseli
status

 

Dentatosoma zeraboseli gen. et sp. nov.

Figs 87–90 View FIGURE 87 View FIGURE 88 View FIGURE 89 View FIGURE 90 , 91 View FIGURE 91 C

Diagnosis. Differs from the other two species of the genus by the anterior gonopods which are ending up with a long, laterally and downward orientated horn.

Etymology. The new species is named after its type locality, Zeraboseli , a noun in apposition.

Material studied (total: 35 males, 95 females, 12 juveniles). Holotype. GEORGIA: male , Ajaria, Kintrish Nature Reserve , Zeraboseli , 450–600 m asl, 1–3 Jun. 1981, S. Golovatch & J. Martens leg. ( ZMUM ρ3337).

Paratypes (total: 29 males, 89 females, 12 juveniles). All from GEORGIA, Ajaria: 6 males, 6 females, 3 juveniles, same data as holotype ( ZMUM ρ3338) ; 3 males, 3 females, same data, except: Rhododendron thickets, 2 Jun. 1981 ( ZMUM ρ3339) ; 16 males, 76 females, 9 juveniles (ZMUM ρ3340), 4 males, 4 females (IZB), Zelenyi Mys, Batumi Botanical Garden, 20–150 m asl, 30 May–7 Jun. 1981, S. Golovatch & J. Martens.

Other material (total: 5 males, 6 females) . All from GEORGIA, Chokhatauri District, near Bakhmaro, 40 km SSE Nabeglavi: 2 males, 3 females, 600 m asl, Alnus forest along stream, 8 Jun. 1981, S. Golovatch & J. Martens ( ZMUM ρ3341) ; 3 males, 3 females, 1550–1700 m asl, Abies , Picea , Fagus forest, same date and collectors (IZB).

Type locality. GEORGIA : Ajaria, Kintrish Nature Reserve, Zeraboseli .

Description. Body with 30 segments (including telson) in adults.

MEASUREMENTS. Males 10.5–12.5 mm long, vertical diameter of the largest pleurotergite 0.9–1 mm. Females 13.5–16.5 mm long, vertical diameter of the largest pleurotergite 1.1–1.3 mm.

COLORATION ( Fig. 87 View FIGURE 87 ). As in previous species.

HEAD. Flattened in males. Labrum with three medial teeth and 6+5 labral and 2+2 supralabral setae. Promentum triangular, without setae. Lingual plates with 6+5 setae, on each plate arranged in two irregular rows. Stipites with ca 18+18 setae. Antennae 1.55 mm long in holotype. Length of antennomeres (in mm): I (0.1), II (0.18), III (0.36), IV (0.17), V (0.39), VI (0.19), VII (0.14) and VIII (0.02). Length/breadth ratios of antennomeres I–VII: I (1), II (2), III (4), IV (2), V (3.5), VI (1.7) and VII (1.5). Antennomeres II, IV, V, VI and VII with one, three, one, four and one sensillum, respectively. Number of ocelli 21–25, arranged in 5–6 rows in males; 21–25 in 5–6 rows in female.

COLLUM. Narrower than head, with six macrochaetae. Anterior edge semi-circular, posterior margin gently concave.

BODY SEGMENTS ( Figs 87 View FIGURE 87 , 88 View FIGURE 88 ). Lateral keels or swellings completely absent, only first few segments with barely visible swellings. Limbus very characteristic, dentate. Some limbus denticles with one short seta. Macrochaetae medium-sized and trichoid. CIX (pleurotergite 15) = 1; MIX (pleurotergite 15) = 1; PIX (pleurotergite 15) = 0; MA (pleurotergite 15) = 180˚.

TELSON. Epiproct with a pair of spinnerets and 3+3 setae (1+1 paramedian, 2+2 marginal). Hypoproct with 1+1 apical setae. Paraprocts with 3+3 marginal setae.

WALKING LEGS. In both sexes, leg-pairs 1 and 2 with tarsal combs; prefemora with several long and robust setae; femora and postfemora with a group of several long and robust setae.

MALE SEXUAL CHARACTERS ( Fig. 91 View FIGURE 91 C). Leg-pairs 3–7 only slightly enlarged; leg-pair 7 the most enlarged and with sabre-like tarsi. Leg-pairs 3–6 resembling normal walking legs. Leg-pair 10 with coxal glands, no other peculiarities. Leg-pair 11 with coxal glands and a well-developed, posterior, coxal horn.

ANTERIOR GONOPODS ( Figs 89 View FIGURE 89 A–C, 90A–E). Simple. Sternal plate (sp) anteriorly with a medial, hairy, sternal sac (ss). Coxal processes (cp) completely divided, high, parallel, ending up with a long, laterally and downward orientated horn (h). Posteriorly, both coxal processes with a medial, longitudinal, denticulate lamella (lol) and a pair of coxal vesicles (cv) with a long triangular process (trp) in-between. Above this triangular process, a winglike structure (ws) present.

POSTERIOR GONOPODS ( Figs 89 View FIGURE 89 D, 90F–H). Coxites (c) divided. Telopodites (t) present on posterior side, consisting of a pigmented membranous part with setae. Coxal processes (cp) simple, curved anteriorly, with a shallow notch apically. Coxal vesicles (cv) situated anteromesally.

Distribution. Georgia ( Fig. 170 View FIGURE 170 , green circle).

ZMUM

Zoological Museum, University of Amoy