Parabomis elsae, Dippenaar-Schoeman & Foord, 2020

Dippenaar-Schoeman, Anna S. & Foord, Stefan H., 2020, Revision of the Afrotropical crab-spider genus Parabomis Kulczyński, 1901 (Araneae: Thomisidae), Zootaxa 4899 (1), pp. 161-174: 164

publication ID

https://doi.org/10.11646/zootaxa.4899.1.8

publication LSID

lsid:zoobank.org:pub:A0C2249D-1099-4F9E-80F2-04A3770E8744

DOI

http://doi.org/10.5281/zenodo.4400898

persistent identifier

http://treatment.plazi.org/id/03CF87B1-FFAA-2743-76BF-DAF1FC56F868

treatment provided by

Plazi

scientific name

Parabomis elsae
status

sp. nov.

Parabomis elsae   sp. nov.

Figures 4–7 View FIGURES 4–9

Etymology. Named after Elsa van Niekerk (Pretoria South Africa), the graphic artist at Agricultural Research Council (ARC)—Plant Health and Protection, in recognition of her support for spider research at the ARC.

Diagnosis. Males and females of this species are recognized by their mottled bodies and copulatory organs ( Figs 4, 5 View FIGURES 4–9 ). Parabomis elsae   sp. nov. females resemble those of P. megae   sp. nov. in the shape of the epigyne, but the colour differs by being strongly mottled in P. elsae   sp. nov. In males of both species the RTA apex is directed dorsad, but in P. elsae   sp. nov. the RTA apex is claw-like ( Fig. 6 View FIGURES 4–9 ).

Description. Holotype male. Measurements: TL 1.8; CL 0.85; CW 0.95. Legs: I 1.42 (0.51, 0.12, 0.30, 0.27, 0.22) II; 1.42 (0.63, 0.21, 0.28, 0.20, 0.10); III 1.08 (0.34, 0.12, 0.32, 0.20, 0.10); IV 1.32 (0.47, 0.15, 0.32, 0.19, 0.19). Carapace fawn, with 3 faint yellowish bands, one medially other 2 radiating from PLE to posterior edge ( Fig. 4 View FIGURES 4–9 ); darker patches laterally; integument granulose, with scattered small tubercles, with scattered short, thick, flat-lying setae, more numerous laterally; carapace slightly wider than long. Chelicerae brown; mouthparts paler brown. Sternum pale brown; integument granulose. Legs brown, same as in carapace; femora and tibiae slightly darker; articulation area of joints with strong white rim. Abdomen dorsum shield-like; with dark brown patches, with paler transverse patches in between, sides grey, speckled with white. Male palp with RTA tip claw-like curving upwards; VTA small fused with RTA ( Fig. 6 View FIGURES 4–9 ).

Female. Measurements: TL 3.36; CL 1.36; CW 1.36. Legs: I 1.93 (0.68, 0.29, 0.43, 0.25, 0.28); II 1.84 (0.60, 0.27, 0.44, 0.25, 0.28); III 1.23 (0.42, 0.24, 0.26, 0.12, 0.19); IV 1.74 (0.56, 0.46, 0.29, 0.31, 0.12). Resembles male. Carapace fawn, with strong mottled appearance; 3 faint yellowish bands, one medially other two radiating; darker patches laterally; clypeus and eye area with three infused medial bands; clypeus paler ( Fig. 5 View FIGURES 4–9 ); carapace as wide as long; integument granulose, with scattered small tubercles. Chelicerae pale yellow, mouthparts yellowish brown. Sternum yellowish brown; integument granulose. Legs brown, strongly mottled with white, base of setae brown giving legs spotted appearance; articulation area of joints with strong white rim. Abdomen dorsum creamish white, base of abdominal setae dark, giving abdomen strong spotted appearance, especially anteriorly. Epigyne atrium wider than long, egg-shaped, with lateral edges slightly thickened ( Fig. 7 View FIGURES 4–9 ); intromittent orifices uncovered and situated in anterior part; spermatheca with two lobes ( Fig. 8 View FIGURES 4–9 ).

Type material. Holotype ³: SOUTH AFRICA: Gauteng Province: Roodeplaat Dam Nature Reserve (West), 17 km NE of Pretoria, 28º22’S, 25º37’E, leg. A.S. Dippenaar-Schoeman, 5.XI.1981 (beating Vachelia trees) ( NCA 82 /492). GoogleMaps  

Paratypes: SOUTH AFRICA: Gauteng Province, Roodeplaat Dam Nature Reserve (West), 17 km NE of Pretoria, 28º22’S, 25º37’E, leg. A.S. Dippenaar-Dippenaar, 27.XI.1979 (beating flowering Acacia   trees, spider collected from yellow flowers), 1♀ ( NCA 80/277); Same locality, leg. A.S. Dippenaar-Schoeman, 17.XII.1981 (sweeping grass), 1³ ( NCA 81/1091); Same locality, leg. National Collection of Arachnida  staff, 22.IX.1988 (beating Acacia   trees), 1³, 2 imm. ( NCA 92/607).

Other material examined. SOUTH AFRICA: Gauteng Province: Enkeldoorn, 25°24’S, 28°40’E, leg. A.S. Dippenaar-Schoeman, 6.VIII.1974 (sweeping grass), 4imm. ( NCA 76 /298); GoogleMaps   Roodeplaatdam Nature Reserve , 28º22’S, 25º37’E, leg. M. Stiller, 29.IX.1980 (sweeping grass), 1imm. ( NCA 1992 /608); GoogleMaps   Same locality, leg. M. Stiller, 13.VIII.1980 (sweeping grass), 1imm. ( NCA 1981 /862); GoogleMaps   Same locality, leg. A.S. Dippenaar-Schoeman, 27.XI.1980 (sweeping grass), 2imm. ( NCA 1999 /34) GoogleMaps   . KwaZulu-Natal Province: iSimangaliso Wetland Park, Hell’s Gate, 28º01.2’S, 32º21.6’E, leg. J. Esterhuizen, 1.XI.2004 (blue trap), 1³ ( NCA 2020 /547); GoogleMaps   Same locality data, 3.VIII.2008 (blue trap), 1³ ( NCA 2020 /548); GoogleMaps   Same locality data, 20.IX.2004 (blue trap), 2³, 1imm. ( NCA 2020 /549); GoogleMaps   iSimangaliso Wetland Park , False Bay Park, 27º58.8’S 32º21.72’E, leg. M. Hamer, 6.XI.2004 (tree beating), 1³, 1imm. ( NCA 2006 /58) GoogleMaps   . Limpopo Province: Rust de Winter, 25°13’S, 28°29’E, leg. A.S. Dippenaar-Schoeman, 30. IV.1981 (beating grass), 1♀, 1imm. ( NCA 99 /35); GoogleMaps   Polokwane Nature Reserve , 23º58’S, 29º28’E, leg. T. Khoza & M. Modiba, 3. II.2006 (riverine and sweet thorn ticket, tree beating), 1³, 1♀ ( NCA 2008 /2204) GoogleMaps   . Mpumalanga Province: Loskopdam Nature Reserve , 25°46’S, 29°23’E, leg. A.S. Dippenaar-Schoeman, 2. IV.1973 (sweeping grass), 1imm. ( NCA 2009 /455) GoogleMaps   .

Distribution. South Africa: Gauteng, Limpopo, KwaZulu-Natal, and Mpumalanga Provinces ( Fig. 32 View FIGURES 31–32 ).

Biology/Habitat. Specimens have been mainly collected beating flowering Vachellia   trees and sweeping grass in the Savanna Biome. Adults were sampled from September to December.

T

Tavera, Department of Geology and Geophysics

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Thomisidae

Genus

Parabomis