Rhagidia (Deharvengiella) paralleloseta Zacharda, 2011
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publication ID |
https://doi.org/ 10.1080/00222933.2010.535915 |
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persistent identifier |
https://treatment.plazi.org/id/0382502C-900A-FFEA-FEDC-FEF9E6EE231F |
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treatment provided by |
Felipe |
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scientific name |
Rhagidia (Deharvengiella) paralleloseta Zacharda |
| status |
sp. nov. |
Rhagidia (Deharvengiella) paralleloseta Zacharda , sp. nov.
( Figures 1 View Figure 1 , 2 View Figure 2 )
Material examined
Holotype. Adult female, France, Lot and Dordogne , Gouffre de l’Oule, 240 m above sea level, coll. L. Deharveng, 15 April 1984; deposited in the Museum of Biological Diversity, Ohio State University, Type No. OSAL0007414 View Materials ; adult male, the same data, lost during preparation.
ad1
A B C,D,F,G E
Diagnosis
Rhagidial organ I comprises four strikingly long rhagidial solenidia lying parallel in separate depressions, stellate famulus (ε) subtending second rhagidial solenidion; rhagidial organ II with three rhagidial solenidia lying parallel in separate depressions, spiniform famulus (ε) not observed. Coxae I, II, III, IV with 3-1-5-3 finely pubescent setae, respectively. Adoral setae on subcapitulum short, not overlapping apex of subcapitulum.
Description – adult female (one examined)
Length of idiosoma 768 µm. Ratio of leg I length to idiosomal length 1.04. Gnathosoma . Subcapitulum broadly oval, subtriangular; ratio of length to breadth 1.33; distal hypostomal lips with spiniform internal malar and serrate external malar processes; adoral setae nude, short, not overlapping apex of subcapitulum ( Figure 2F View Figure 2 ); proximal subcapitular setae pubescent, external pair slightly longer than internal pair. Dorsal surface of chelicera with saddle-shaped depression at level of bases of digits; cheliceral digits slender; fixed digit smooth along masticatory surface ( Figure 2A,B View Figure 2 ); movable digit smooth along masticatory surface. Chelicera with two setae, proximal seta inserted above articulation of movable digit; tip of proximal seta not reaching insertion of distal seta; tip of distal seta slightly overlaps apex of fixed digit. Length of chelicera 158 µm, dorsoventral width 59 µm, length of movable digit 69 µm, length of proximal and distal cheliceral setae 20 and 26 µm, respectively, distance between their insertions 26 µm. Ratios: cheliceral length to dorsoventral width 2.67; length of movable digit to length of chelicera 0.44; length of movable digit to dorsoventral width of chelicera 1.17. Palpal tarsus much shorter than femorogenu ( Figure 2G View Figure 2 ); ratio of length to width of tarsus 2.0. Lengths of palpal trochanter, femorogenu, tibia and tarsus 33, 66, 23 and 59 µm, respectively. Number of setae on palpal segments was not discernible.
Prodorsum. Naso indistinct, only slightly developed ( Figure 1 A View Figure 1 ), with pair of internal vertical setae v 1. Bothridial setae sc 1 filiform, finely pubescent, clearly shorter than sc 2 and not overlapping disjugal suture. Length of setae: v 1 33, v 2 33, sc 1 76, sc 2 99 µm.
Opisthosomal dorsum and anal region. Complement and arrangement of dorsal setae typical of Rhagidiidae ; cupules were indiscernible. Length of setae: c 1 23, c 2 76, d 1 and e 1 not known (torn off), f 1 36, f 2 30, h 1 69, h 2 30, ps 1 53, ps 2 30, ps 3 20, ad 1 25 µm.
Podosoma. Coxae I, II, III, IV with 3-1-5-3 finely pubescent setae, respectively.
Genital region. Genital valves each with five finely pubescent genital setae (g) of similar length, about 16 µm, arranged evenly along medial edge of valve. Five pairs of aggenital setae (ag) of similar length, about 30 µm. Length of genital valves 96 µm.
Legs. Leg I 800 µm long, about 1.04–1.15 times as long as idiosoma. Empodia of all legs setulose, slightly longer than claws; claws each with small basal tubercle ventrobasally. Tarsus I slender, its tip slightly tapers in lateral view, ratio length to width 4.6, with four strikingly long rhagidial solenidia lying parallel in separate depressions dorsodistally ( Figure 2C View Figure 2 ), stellate famulus (ε) subtending second rhagidial solenidion; tarsus II with three rhagidial solenidia lying parallel in separate depressions, spiniform famulus (ε) not observed ( Figure 2D View Figure 2 ). Dorsodistal lanceolate solenidion on tibia II recessed in deep insertion pit with broadly open surface pore ( Figure 2E View Figure 2 ). Spiniform solenidia on leg segments were not discernible in badly damaged specimens.
Description – adult male
One examined but lost in preparation. Length of idiosoma 640 µm, similar to female ( Figure 1B View Figure 1 ).
Affinities
Rhagidia (D.) paralleloseta sp. nov. differs from the other known representatives of the genus by having a parallel position of the enlarged rhagidial solenidia in the rhagidial organs I and II. The extremely long, slender rhagidial solenidia are a troglomorphism, a specific morphological adaptation to life in the subterranean habitat. See also the key to adults of Deharvengiella , below.
Etymology
The epithet paralleloseta reflects the parallel position of the rhagidial solenidia on tarsi I and II. Feminine gender.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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