Rilaena kelbajarica Snegovaya et Pkhakadze, 2014

Snegovaya, N. Yu. & Pkhakadze, V. D., 2014, New Species Of The Genus Rilaena (Opiliones, Phalangiidae) From The Mount Gyamish, Azerbaijan, Vestnik Zoologii 48 (4), pp. 313-318 : 314-317

Rilaena kelbajarica Snegovaya et Pkhakadze , sp. n. ( fig. 1, 1 –14; 3)

M a t e r i a l e x a m i n e d. Holotype ♂, Azerbaijan, Kelbajar (Kəlbəcər), northern slope of Gyamish Mt. ( Gamiş Daği ), 15.07.1909 (A. Shelkovnikov) (“Азербайджан, Кельбаджар, Северный склон горы Гямыш” (А. Шелковников) ( GNM № 45–09 (879). Paratypes: 2 ♂, 3 ♀ 1 juv., same place ( GNM № 45–09 (879) .

D i a g n o s i s. The new species is similar to Rilaena atrolutea (Roewer, 1915) differing from it by having considerably shorter legs, greater armament on the legs; thicker leg femora; larger denticles on the eye mound, in front of eye mound and on pedipalps; penis smaller overall ( fig. 2 , 1 –7). From the other closely species Rilaena anatolica (Roewer, 1956) the new species differs by having a narrower eye tubercle; larger denticles on eye tubercle and in front of eye mound; greater armament on pedipalps and legs; more bluntly rounded apophyses on pedipalps; longer penis with greater enlargement in distal part, glans of the penis larger and thicker ( fig. 2 , 8–14).

D e s c r i p t i o n. M a l e. Body quadrangular in form, covered with transverse rows of small denticles. Body length 5.6, wide 2.8. In front of the eye mound and on the sides there are a group of black-tipped tubercles. Eye mound trapezoid form with 12, 13 black-tipped tubercles on each side. Eye mound length 0.6, width 0.45. Body light-brown with darker saddle mark. Legs relatively long, femora I thickened, segments covered with longitudinal rows of large denticles. Leg segment lengths:

Leg	Femur	Patella	Tibia	Metatarsus	Tarsus	Total
I	3.0	1.2	2.8	3.8	4.5	15.3
II	5.0	1.5	5.0	6.0	8.5	26.0
III	3.4	1.3	2.9	4.0	5.4	17.0
IV	4.5	1.3	3.7	6.3	6.0	21.8

Pedipalp lengths (femur to tarsus) 1.3 + 1.0 + 1.1 + 1.85 = 5.25. Femora of pedipalps with large black-tipped denticles, with small rounded tomentous apophyses; Patella with large, rounded, covered with long setae apophyses; Tibia with small, rounded apophyses, densely covered with setae. Ventrally patella with small black-tipped denticles. Tarsus ventrally with microdenticles.

Chelicera not greatly enlarged, dorsally segments with black-tipped denticles. Cheliceral lengths: basal segment 1.7, distal segment 2.0. Penis length 3.0, glans 0.25, stylus 0.20. Penis with wide base, long shaft and expanded distal part, forming a “spoon”,“wings” not very wide.

F e m a l e differs from male by having a larger, more rounded body; segments of the legs and pedipalps less armed; smaller chelicera ( fig. 1 , 3 , 6–7, 10–11). Female body length 7.2, width 3.0. Pedipalp lengths (femur to tarsus) 1.5 + 1.5 + 0.9 + 1.7 = 5.6. Basal cheliceral segment length 1.5, distal segment 1.8.

Leg segment lengths:

Leg	Femur	Patella	Tibia	Metatarsus	Tarsus	Total
I	2.5	0.8	2.2	2.8	3.3	11.6
II	4.5	1.3	4.3	4.8	9.0	23.9
III	2.7	1.1	2.3	3.3	4.6	14.0
IV	4.0	1.2	2.8	5.0	6.2	19.2

Рис. 1. Rilaena kelbajarica sp.n.: 1 — тело самца, дорсально; 2 — тело самца, латерально; 3 — тело самки, дорcально; 4 — педипальпа самца, пролатерально; 5 — педипальпа самца, ретролатерально; 6 — педипальпа самки, ретролатерально; 7 — педипальпа самки, пролатерально; 8 — хелицера самца, пролатерально; 9 — хелицера самца, ретролатерально; 10 — хелицера самки, ретролатерально; 11 — хелицера самки, пролатерально; 12 — пенис, дорсально; 13 — пенис, латерально; 14 — головка пениса, латерально. Масштабные линейки 1 мм.

Рис. 2. Другие виды рода Rilaena . Rilaena atrolutea : 1 — тело самца, дорcально; 2 — педипальпа самца, пролатерально; 3 — хелицера самца, пролатерально; 4 — хелицера самца, ретролатерально; 5 — пенис, дорсально; 6 — пенис, латерально; 7 — головка пениса, латерально, Rilaena anatolica : 8 — тело самца, дорcально; 9 — педипальпа самца, пролатерально; 10 — хелицера самца, пролатерально; 11 — хелицера самца, ретролатерально; 12 — пенис, дорcально; 13 — пенис, латерально; 14 — головка пениса, латерально. Масштабные линейки: 1–4, 8–11 — 1 мм; 5, 6, 12, 13 — 0,5 мм; 7, 14 — 0,1 мм.

Рис. 3. Местонахождение Rilaena kelbajarica sp. n.

E t y m o l o g y. The species is named after the type locality, Kelbajar District ( Azerbaijan).

D i s t r i b u t i o n. The species is thus far known only from Mount Gyamish, Kelbajar District ( Azerbaijan).

C o m p a r a t i v e m a t e r i a l. Rilaena atrolutea (Roewer, 1915) : 5 ♂, 1 ♀, Russia, Daghestan, Charodinskiy Distr., Archib vill., June-July 1991 (G. Abdurakhmanov) ( RCNS). Rilaena anatolica (Roewer, 1956) : 2 ♂, 1 ♀, Turkey, Kastamonu, Azdavay , 41°41.938´N, 33°25.971´E, 975 m, 30.05.2009 (Yu. Marusik) ( RCNS) .

Figures

Fig. 1. Rilaena kelbajarica sp.n.: 1 — male body, dorsal view; 2 — male body, lateral view; 3 — female body, dorsal view; 4 — male pedipalp, prolateral view; 5 — male pedipalp, retrolateral view; 6 — female pedipalp, retrolateral view; 7 — female pedipalp, prolateral view; 8 — male chelicerae, prolateral view; 9 — male chelicerae, retrolateral view; 10 — female chelicerae, retrolateral view; 11 — female chelicerae, prolateral view; 12 — penis, dorsal view; 13 — penis, lateral view; 14 — glans of penis, lateral view. Scale bars 1 mm.

Fig. 2. Related species of the genus Rilaena. Rilaena atrolutea: 1 — male body, dorsal view; 2 — male pedipalp, prolateral view; 3 — male chelicerae, prolateral view; 4 — male chelicerae, retrolateral view; 5 — penis, dorsal view; 6 — penis, lateral view; 7 — glans of penis, lateral view. Rilaena anatolica: 8 — male body, dorsal view; 9 — male pedipalp, prolateral view; 10 — male chelicerae, prolateral view; 11 — male chelicerae, retrolateral view; 12 — penis, dorsal view; 13 — penis, lateral view; 14 — glans of penis, lateral view.Scale bars: 1–4, 8–11 — 1 mm; 5, 6, 12, 13 — 0.5 mm; 7, 14 — 0.1 mm.

Fig. 3. Type locality of Rilaena kelbajarica sp. n.