Chumma striata, Jocqué & Alderweireldt, 2018

Jocqué, Rudy & Alderweireldt, Mark, 2018, New Chummidae (Araneae): quadrupling the size of the clade, European Journal of Taxonomy 412, pp. 1-25 : 14-17

Chumma striata sp. nov.

urn:lsid:zoobank.org:act:49784BF2-D421-4B7C-B05A-05CE34A69179 Figs 7 A–G, 8A, 12

Diagnosis

Females of this species can be distinguished by the characteristics of the epigyne: the spermathecae are globular and devoid of a frontal excrescence whereas in the closely related C. gastroperforata the spermathecae are laterally concave and provided with a small knob. Males are distinguished by characteristics of the palp: the tibia is shorter and broader than in C. gastroperforata and the teeth on the posterior rim are closer to the extremity ( Jocqué 2001: fig. 10d–e).

Etymology

The specific epithet ‘ striata ’, Latin for ‘striped’, refers to the stripes on the cephalothorax.

Material examined

Holotype

SOUTH AFRICA: ♀, Western Cape Province, Prince Albert, Farm Rosendal , 33°16.570′ S, 22°14.729′ E, 24–26 Sep. 2006, R. Lyle, R. Fourie, V. Swart, J. Saaiman, R. du Preez and D. Van Rensburg leg. ( NCA 2008 /2868).

Other material

SOUTH AFRICA: 3 ♀♀, same collecting data as for holotype; 1 ♂, George, Saasveld forestry station, 33°58′ S, 22° 27′ E, sieved litter, 12 Jan. 1989, R. Jocqué leg. ( MRAC 169642); 1 ♂, 10 km E of George, Silverrivier, 33°58′ S, 22°27′ E, forest, pitfalls, 17 Jan. 1989, R. Jocqué leg. ( MRAC 169733). Both males were described as paratypes of C. gastroperforata in Jocqué (2001) .

Description

Female

BODY MEASUREMENTS. TL 2.34, CL 1.28, CW 0.99, CH 0.71.

CARAPACE. Yellow with pattern of medium brown stripes ( Fig. 7A ); chelicerae and sternum yellow.

ABDOMEN. Grey with medium brown transparent scutum; without pale spots behind sockets of scutum hairs; spinnerets yellow.

EYES. AME: 0.07; ALE: 0.08; ALE–ALE: 0.02; AME–ALE: 0.03; PME: 0.12: PLE: 0.12; PME–PME: 0.08; PME–PLE: 0.04. Clypeus 0.05 or 1.6 times width of ALE.

STERNUM. Shield-shaped, as long as wide: 0.61.

EPIGYNE ( Figs 7 F–G, 8A). A dark yellow area provided with a tiny rectangular plate near posterior rim, preceded by the spermathecae, visible in transparency as dark brown spots. Vulva with large globular spermathecae devoid of frontal excrescence.

Male

The male was described by Jocqué (2001) as paratype of Chumma gastroperforata . The male habitus is shown in Fig. 7B , the palp in Fig. 7 C–E.

Distribution

The species is known from the vicinity of George in the Western Cape Province ( Fig. 12 ).

Figures

Fig. 7. Chumma striata sp. nov. A, F, G. Holotype, ♀. B, E. ♂ (MRAC 169642). C, D. ♂ (MRAC 169733). A. Habitus, dorsal view. B. Habitus, dorsal view. C. Palp, retrolateral view. D. As preceding, dorsal view (arrow indicates posterior spine on RTA). E. As preceding, ventral view. F. Epigyne, ventral view. G. Epigyne, cleared, dorsal view. – H. Chumma gastroperforata Jocqué, 2001, paratype, ♀ (MRAC 131718), epigyne. Scale bars: A–B = 0.5 mm; C–E = 0.2 mm, E–H = 0.1 mm.

Fig. 12. Distribution map of Chumma spp.: C. bicolor sp. nov. (▲); C. foliata sp. nov. (●); C. gastroperforata Jocqué, 2001 (●); C. inquieta Jocqué, 2001 (Ǫ); C. interfluvialis sp. nov. (■); C. lesotho sp. nov. (●); C. striata sp. nov. (●); C. subridens sp. nov. (●); C. tsitsikamma sp. nov. (●).