Cryptacanthophorella manubriata

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 : 156-161

Cryptacanthophorella manubriata gen. et sp. nov.

Figs 129–133

Diagnosis. As for the genus.

Etymology. An adjective; to emphasize the presence of a pair of posterior levers (handles) on the anterior gonopods.

Material studied (total: 8 males, 9 females). Holotype. GEORGIA: male, Borzhomi Nature Reserve, Baniskhevi Valley, 800–900 m asl, Picea , Fagus & Carpinus forest, litter, logs, under stones, 12, 16 May 1983, S. Golovatch leg. ( ZMUM ρ3405).

Paratypes (total: 1 male, 6 females). All from GEORGIA: 1 male, 6 females, same data as holotype ( ZMUM ρ3406).

Other material (total: 6 males, 3 females). All from GEORGIA : 1 male, 1 female, Chokhatauri District, near Bakhmaro , 40 km SSE Nabeglavi, 1550–1700, Abies , Picea & Fagus forest, 8 Jun. 1981, S. Golovatch & J. Martens leg. ( ZMUM ρ3407) ; 2 males (ZMUM ρ3408), 1 male ( IZB), same data, except: 1950–2020 m asl, Abies nordmanniana forest ; 1 male, Ajaria, Kintrish Nature Reserve , Zeraboseli , 800 m asl, Rhododendron thicket, litter, 13 Oct. 1981, S. Golovatch leg. ( IZB) ; 1 male, 2 females, Surami (= Rikoti) Pass , ca 1000 m asl, Fagus , Alnus , Rhododendron , Castanea forest, litter and under stones, 14 Apr. & 17 May 1983, S. Golovatch leg. ( ZMUM ρ3409).

Type locality. GEORGIA: Borzhomi Nature Reserve , Baniskhevi Valley, 800–900 m asl, Picea , Fagus & Carpinus forest.

Description. Body with 31 segments (including telson) in adults.

MEASUREMENTS. Males 10–12 mm long, vertical diameter of the largest pleurotergite 0.85–1 mm. Females 9– 11.5 mm long, vertical diameter of the largest pleurotergite 0.85–1 mm.

COLORATION ( Fig. 129 ). Yellowish, with traces of greyish and brownish pigmentation.

HEAD. Without frontal depression in males. Labrum with three medial teeth and 5+4 labral and 2+2 supralabral setae. Promentum triangular, without setae. Lingual plates with 6+5 setae, on each plate arranged in 1–2 irregular rows. Stipites with ca 20+20 setae. Antennae 1.6 mm long in holotype. Length of antennomeres (in mm): I (0.08), II (0.18), III (0.42), IV (0.23), V (0.38), VI (0.15), VII (0.12) and VIII (0.04). Length/breadth ratios of antennomeres I–VII: I (1), II (2), III (5), IV (2.5), V (3.5), VI (1.3) and VII (1.2). Antennomeres II, IV, V, VI and VII with one, three, one, four and one sensillum, respectively. Number of ocelli 15–18, arranged in 4–6 rows in both sexes.

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

BODY SEGMENTS ( Figs 129 , 130 ). Lateral keels like lateral swellings. Macrochaetae medium-sized and trichoid. CIX (pleurotergite 15) ~ 1.4; MIX (pleurotergite 15) ~ 0.5; PIX (pleurotergite 15) ~ 0.7; MA (pleurotergite 15) ~ 110˚.

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. 131 ). Leg-pairs 3–7 enlarged, especially so leg-pairs 3, 4 and 7. Leg-pairs 3 and 4 each with a basal external protrusion on prefemur; prefemur and femur thickened. Leg-pair 5 with a basal, subtriangular, oral protrusion on femur. Leg-pair 6 without peculiarities. Leg-pair 7 with a well-developed, spatulated, lamellar, posterior, coxal process; prefemora with a bump. Leg-pair 10 with coxal glands and a posterior coxal horn. Leg-pair 11 with coxal glands, without other peculiarities.

ANTERIOR GONOPODS ( Figs 132 , 133 A–F). Sternal plate (sp) with an anterior, medial, hairy, sternal sac (ss). Coxal processes completely fused basally; consisting of a medial part (mp) and two lateral parts (lp). Medial part with a longitudinal medial groove (lg); apically, with a pair of posteriorly curved horns (h); subapically, on lateral side with a U-shaped rift; posteriorly, with a nippled part (wp). Lateral parts with an anterior lamellar structure (al); posteriorly with a C-shaped lever (lv), this latter being orientated anteriorly; levers with an additional subapical process (apr). Gonopods are characterized by the presence of a pair of hidden anterior processes (hap) situated on both sides of the medial part, only their upper third visible, passing through the U-shaped rift of medial part. Posteriorly, with a medial syncoxal vesicle (scv), as well as with a pair of hairy levers (hl) and an additional process with minute setae (aps).

POSTERIOR GONOPODS ( Fig. 133 G, H). Coxited (c) divided. Telpodites (t) present on posterolateral side. Coxal processes (cp) simple, curved posteriorly. Anterior side carrying a membranous crest (mc). Coxal vesicles (cv) placed basally on anterior side.

Figures

FIGURE 129. Cryptacanthophorella manubriata gen. et sp. nov., male from near Bakhmaro, Chokhatauri District, Georgia, habitus. Scale line = 1 mm.

FIGURE 130. Cryptacanthophorella manubriata gen. et sp. nov., male from near Bakhmaro, Chokhatauri District, Georgia. A. Pleurotergite 15, posterior view. B. Pleurotergite 14 and 15, lateral view. C. Prozonite 15, dorsal view. D. Lateral keel 15, dorsal view. E. Pleurotergite 14 and 15, dorsal view.

FIGURE 131. Cryptacanthophorella manubriata gen. et sp. nov., holotype male. A. Leg 3. B. Leg 7. C. Leg 4. D. Leg 10. Scale lines = 0.2 mm.

FIGURE 132. Cryptacanthophorella manubriata gen. et sp. nov., holotype male anterior gonopods, posterior view. h = horn; hl = hairy lever; lv = lever; wp = nippled part; apr = subapical process; aps = process with minute setae; hap = hidden anterior process. Scale line = 0.2 mm.

FIGURE 133. Cryptacanthophorella manubriata gen. et sp. nov., male from near Bakhmaro, Chokhatauri District, Georgia, gonopods. A. Anterior gonopods, anterior view. B. Anterior gonopods, anterolateral view. C. Anterior gonopods, lateral view. D. and E. Anterior gonopods, posterolateral view. F. Anterior gonopods, posterior view. G. Posterior gonopods, posterior view. H. Posterior gonopods, lateral view. c = coxite; h = horn; t = telopodite; al = anterior lateral structure; cp = coxal process; cv = coxal vesicle; hl = hairy structure; lg = medial groove; lp = lateral part; lv = lever; mc = membranous crest; mp = medial part; sp = sternal plate; ss = sternal sac; wp = nippled part; apr = subapical process; aps = process with minute setae; hap = hidden anterior process; scv = syncoxal vesicle.