Ballomma erasmus, Jocqué, Rudy & Henrard, Arnaud, 2015

Jocqué, Rudy & Henrard, Arnaud, 2015, Ballomma, a new Afrotropical genus in the Cryptothelinae (Araneae, Zodariidae): eyes on the run, European Journal of Taxonomy 163 (163), pp. 1-24: 5-10

publication ID

http://dx.doi.org/10.5852/ejt.2015.163

publication LSID

lsid:zoobank.org:pub:69DE247F-A00E-48B1-845F-191C0FC03F8B

DOI

http://doi.org/10.5281/zenodo.6096853

persistent identifier

http://treatment.plazi.org/id/A6681529-ED54-46CF-B39D-E7862EBED809

taxon LSID

lsid:zoobank.org:act:A6681529-ED54-46CF-B39D-E7862EBED809

treatment provided by

Jeremy

scientific name

Ballomma erasmus
status

gen. et sp. nov

Ballomma erasmus   gen. et sp. nov.

urn:lsid:zoobank.org:act:A6681529-ED54-46CF-B39D-E7862EBED809

Figs 1 View Fig. 1 A–D, 2A–D, 3A–C, 4A–D, 5A–C, 14

Diagnosis

The male of B. erasmus   gen. et sp. nov. is easily recognized by the field of spines in front of the epigastric fold and the RTA with three short elements. The female is characterized by the S-shaped ducts in the anterior half of the epigyne.

Etymology

The species name is a noun in apposition taken from the type locality.

Type material

Holotype

SOUTH AFRICA: ♂, Ga-Moraba, Abel Erasmus Pass , 24°27’06” S 30°36’27” E, 4 Oct. 2012, forest , sifting litter, J.A. Neethling ( NCA 2015/3485; ex MRAC 241636) GoogleMaps   .

Paratypes

SOUTH AFRICA: 3 ♀♀, same data as holotype GoogleMaps   (1 ♀ kept in MRAC 241636) GoogleMaps   .

Description

Male (holotype)

MEASUREMENTS. Total length 4.97; carapace 2.63 long, 0.99 high, 1.85 wide, narrowed to 0.85 in eye region.

COLOURATION. Carapace ( Fig. 1 View Fig. 1 A) medium brown without silvery setae; chelicerae medium brown in basal half, pale brown in distal half, sternum brownish orange ( Fig. 1 View Fig. 1 B – C); legs uniform pale yellowish brown, femora with greenish tinge; abdomen ( Fig. 1 View Fig. 1 A – B, D): dorsum and sides pale with complex dark pattern; venter pale, yellowish sclerotized areas in front of spinnerets and in front of epigastric fold; spinnerets pale yellow.

CARAPACE ( Figs 1 View Fig. 1 A, 2 D). Smooth, strongly narrowed in front; flat, fovea long, in shallow depression. Chilum double, each sclerite 0.05 high, 0.13 wide; no setae. Sternum shield-shaped, 1.07 long, 0.85 wide.

EYES. AME: 0.08; ALE: 0.11; ALE–ALE: 0.00; AME –ALE: 0.05; PME: 0.10; PLE: 0.12; PME–PME:

0.03; PME–PLE: 0.13. Clypeus 0.21 or 2.6 times width of ALE, strongly retreating.

LEGS. Anterior tarsi shorter than metatarsi and fusiform; hinged hairs on TI and TII.

SPINATION.

F P T Mt I d2 - - v2-2 - 2 II d 3 - v 1 v2-2 dw 3 III d2 d1rl1 pl2d3rl2 v2-2 -2 6dispdw 5 IV d2 d1rl1 pl4d3rl3 v2-2 -2 8dispdw5

LEG MEASUREMENTS.

F P T Mt t total I 1.61 0.63 1.26 1.19 0.77 5.46 II 1.33 0.63 0.84 1.05 0.56 4.41 III 1.33 0.63 0.70 0.91 0.56 4.13 IV 1.68 0.77 1.12 1.54 0.70 5.81 ABDOMEN ( Figs 1 View Fig. 1 A – B, D, 2 D). Area in front of epigastric fold with 15 small spines. Spinnerets as for genus.

MALE PALP ( Figs 3 View Fig. 3 A – B, 4 A – C). Femur with long ventral setae in distal half; patella without boss; tibia with tuft of long setae along distal dorsal margin; RTA with short sharp hook dorsolaterally, lateral and ventrolateral knobs; cymbium with large curved retrolateral basal flange, seven distal, truncated spines; subtegulum with three curved ridges; tegulum large, distal extremity with ventral knob and dorsal flange; sperm duct conspicuous, slightly sinuous.

Female (paratype together with holotype)

MEASUREMENTS. Total length 4.47; carapace 2.06 long, 1.28 wide, 0.71 high, narrowed to 0.85 in eye region.

COLOURATION. Carapace ( Fig. 2 View Fig. 2 A, C) medium brown with dark margin and faintly delimited triangle suffused with black in front of fovea; chelicerae ( Fig. 2 View Fig. 2 B) medium brown; legs and sternum yellow; abdomen ( Fig. 2 View Fig. 2 A – C): dorsum and sides dark sepia with complex pale pattern; venter pale with few darker spots; spinnerets yellow.

CARAPACE. Smooth. Clypeus with dispersed setae. Chilum poorly delimited. Sternum shield-shaped, 0.92 long, 0.71 wide.

EYES. AME: 0.07; ALE: 0.10; ALE–ALE: 0.0; AME –ALE: 0.04; PME: 0.08; PLE: 0.12; PME–

PME: 0.03; PME–PLE: 0.10. Clypeus 0.15 or 2.0 times width of ALE; slightly retreating.

LEGS. No hinged hairs; preening brush on II–IV poorly developed.

SPINATION.

F P T Mt

I d1 - - - II d 1 - v 1 - III d1 - pl2d2rl2 v1-2 -2 6disp dw 6 IV d1 - pl2d3rl2 v1-2 -2 8disp dw6

LEG MEASUREMENTS.

F P T Mt t total I 1.19 0.49 0.98 0.84 0.63 4.13 II 1.05 0.49 0.70 0.70 0.49 3.43 III 0.77 0.42 0.56 0.70 0.49 2.94 IV 1.26 0.63 0.98 1.19 0.70 4.76

PALP. Triangular ( Fig. 2 View Fig. 2 B), slightly flattened ventrally, with row of prolateral short spines; claw with three teeth, not turned inward.

EPIGYNE ( Figs 3 View Fig. 3 C, 4 D, 5 A – D). Roughly quadrangular; anterior ducts clearly visible, S-shaped disrupting the X-shape; spermathecae fairly small separated by about half their distance.

Distribution

Only known from the type locality in the Limpopo Province, South Africa ( Fig. 14 View Fig. 14 ).

AME

USA, Florida, Gainesville, University of Florida, Florida Museum of Natural History, Allyn Museum

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Zodariidae

Genus

Ballomma