Stenaelurillus digitus, Prajapati, Dhruv A., Murthappa, Prashanthakumara S., Sankaran, Pradeep M. & Sebastian, Pothalil A., 2016

Prajapati, Dhruv A., Murthappa, Prashanthakumara S., Sankaran, Pradeep M. & Sebastian, Pothalil A., 2016, Two new species of Stenaelurillus Simon, 1886 from India (Araneae: Salticidae: Aelurillina), Zootaxa 4171 (2), pp. 321-334 : 327-330

publication ID

https://doi.org/ 10.11646/zootaxa.4171.2.5

publication LSID

lsid:zoobank.org:pub:3ED81997-F875-4501-A7DC-6B3FA2D5947D

DOI

https://doi.org/10.5281/zenodo.6067585

persistent identifier

https://treatment.plazi.org/id/03CF8791-1F13-161C-A89B-F9B6FA65F84B

treatment provided by

Plazi

scientific name

Stenaelurillus digitus
status

sp. nov.

Stenaelurillus digitus View in CoL sp. nov.

Figs 1C–D View FIGURES 1 A – G , 6A–D View FIGURES 6 A – D , 7A–E View FIGURES 7 A – E , 8A–C View FIGURES 8 A – C , 9A–D View FIGURES 9 A – D , 11 View FIGURE 11

Type material. Holotype: male ( ADSH 83503 View Materials Di) from Vijaynagar in Sabarkantha, 23°59'56.24"N, 73°16'48.79"E, Gujarat, India, 307 m. alt., 27 June 2014, D. A. Prajapati leg., by hand from the ground GoogleMaps . Paratypes: 2 males, 3 females ( ADSH 83503 View Materials Dii), same data as holotype, except 21 May 2016. GoogleMaps

Diagnosis. Stenaelurillus digitus sp. nov. is similar to S. albus Sebastian et al., 2015 (see Sebastian et al. 2015: figs 1–3, 8–9) and to S. jagannathae Vidhel et al., 2015 (see Vidhel et al. 2015: figs 3–6, 9–11), but can be distinguished from all congeners by the following combination of characters: males can be easily distinguished from those of S. albus by its opisthosomal pattern (blackish opisthosoma without any pattern in S. albus ); long and prolaterally bend embolus, directed at 11 o’clock position in ventral view (left palp) and not visible from retrolateral view (short and directed at 12 o’clock position in S. albus ; straight and directed at 12 o’clock position and clearly visible in retrolateral view in S. jagannathae ); VTA massive, triangular in shape (short and blunt in S.

albus ); RTA blunt, directed at 1 o’clock position in ventral view in left palp (pointed and directed at 1 o’clock position in S. albus and 12 o’clock position in S. jagannathae ); depressed apical region of tegulum can be visible in retrolateral view (bulky in the case of S. jagannathae ); proximal retrolateral lobe of tegulum significantly curved at retrolateral side ( Figs 6B View FIGURES 6 A – D , 7D View FIGURES 7 A – E ). Females can be distinguished by short and moderately broad epigynal pocket with two sclerotized lateral lobes, which form a “w-shaped” mark ( Figs 8A View FIGURES 8 A – C , 9C View FIGURES 9 A – D ); simple, linear copulatory duct ( Fig 8C View FIGURES 8 A – C ); contiguous spermathecae ( Figs 8B View FIGURES 8 A – C , 9D View FIGURES 9 A – D ) (separated in S. jagannathae ).

Description. Male (holotype, Figs 1C View FIGURES 1 A – G , 7A–B View FIGURES 7 A – E ): In all details like the males of S. gabrieli sp. nov., except for the following: prosoma antero-laterally without additional white hairs. Fovea less prominent, located medially between PLEs. Thoracic region with few scattered bristles. Dorsum of opisthosoma anteriorly with a thick transverse white band; posteriorly with three white spots, which together form an inverted triangle ( Fig. 7A View FIGURES 7 A – E ). Body length 3.95. Prosoma length 2.04, width (at the middle) 1.63, height (at the middle) 0.98. Opisthosoma length 1.91, width (at the middle) 1.40, height (at the middle) 0.60. Eye diameter: ALE 0.26, AME 0.40, PLE 0.20, PME 0.08. Eye interdistances: AME–AME 0.03, AME–ALE 0.03, ALE‒ALE 0.90, ALE–PME 0.31, PLE–PLE 1.05, PME– PME 1.23, PME–PLE 0.21. Clypeus height at ALE 0.46, at AME 0.19. Chelicera length 0.76. Measurements of palp and legs. Palp 1.48 [0.51, 0.24, 0.20, 0.53], I 3.07 [1.05, 0.41, 0.70, 0.44, 0.47], II 2.95 [1.09, 0.35, 0.63, 0.45, 0.43], III 4.57 [1.49, 0.69, 0.91, 1.04, 0.44], IV 4.60 [1.32, 0.58, 0.95, 1.23, 0.52]. Spination. Palp 0 100, 0 0 0 0, 0 0 0 0, 0000; femora I 0 700, II 0 800, III 2600, IV 0500; patellae I 0 0 10, II 1000, III–IV 0200; tibiae I 2005, II 2124, III 2323, IV 2523; metatarsi I 2014, II 1314, III 2613, IV 2514; tarsi I–IV 0 0 0 0. Pedipalp ( Figs 6A–D View FIGURES 6 A – D , 7C–E View FIGURES 7 A – E ): palpal femur with single dorsal spine. Ventral tibial apophysis massive, triangular, directed at 2 o’ clock position in ventral view ( Figs 6B View FIGURES 6 A – D , 7D View FIGURES 7 A – E ). Retrolateral tibial apophysis simple with less prominent base, with blunt tip ( Figs 6C View FIGURES 6 A – D , 7E View FIGURES 7 A – E ). Retrolateral creamy-white region of tegulum extends up to the base of proximal retrolateral lobe of tegulum ( Figs 6B View FIGURES 6 A – D , 7D View FIGURES 7 A – E ); tegulum lacks disto-median sclerotized plate; proximal retrolateral lobe of tegulum with a sharp baso-retrolateral curve, with narrow distal part; embolus long with prolateral bend resembling the ‘thumb finger’, its tip directed at 11 o’clock position in ventral view in left palp ( Figs 6D View FIGURES 6 A – D , 7D View FIGURES 7 A – E ); terminal apophysis short, originated apico-medially, directed at 12 o’clock position in ventral view in left palp ( Figs 6D View FIGURES 6 A – D , 7D View FIGURES 7 A – E ).

Female (paratype, Figs 1D View FIGURES 1 A – G , 9A–B View FIGURES 9 A – D ): In all details like male, except for the following: variation in colour and opisthosomal pattern. Body length 7.11. Prosoma length 3.09, width (at the middle) 2.38, height (at the middle) 1.79. Opisthosoma length 4.02, width (at the middle) 3.54, height (at the middle) 3.10. Eye diameter: ALE 0.33, AME 0.50, PLE 0.31, PME 0.10. Eye interdistances: AME–AME 0.09, AME–ALE 0.05, ALE‒ALE 1.23, ALE– PME 0.26, PLE–PLE 1.43, PME–PME 1.59, PME–PLE 0.20. Clypeus height at ALE 0.51, at AME 0.28. Chelicera length 0.79. Measurements of palp and legs. Palp 2.01 [0.64, 0.25, 0.43, 0.69], I 4.27 [1.50, 0.70, 0.91, 0.62, 0.54], II 4.24 [1.61, 0.63, 0.84, 0.65, 0.51], III 6.99 [2.26, 0.99, 1.52, 1.62, 0.60], IV 7.01 [2.02, 0.82, 1.52, 1.88, 0.77]. Leg formula: 4312. Spination. Palp 0 0 0 0, 0 0 0 0, 0 0 0 0, 0211; femora I 1510, II 1520, III 2510, IV 0510; patellae I– II 1000, III–IV 1010; tibiae I–II 2005, III–IV 2523; metatarsi I 0 104, II 2004, III 1714, IV 2624; tarsi I–IV 0 0 0 0. Epigynum ( Figs 8A–C View FIGURES 8 A – C , 9C–D View FIGURES 9 A – D ): simple, slightly bulging, which can be seen in lateral view ( Fig. 8C View FIGURES 8 A – C ); copulatory openings large; copulatory ducts simple, thin and linear, with highly sclerotized, spherical and contiguous spermathecae ( Figs 8A–C View FIGURES 8 A – C , 9C–D View FIGURES 9 A – D ); epigynal pocket moderately broad, short, with two sclerotized lateral lobes that form a “w-shaped” mark ( Figs 8A View FIGURES 8 A – C , 9C View FIGURES 9 A – D ).

Etymology. The specific epithet is a noun in apposition due to the finger-like embolus (Latin digitus = finger).

ADSH

Arachnology Division, Sacred Heart College

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Salticidae

Genus

Stenaelurillus

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