Capobula ukhahlamba, Haddad & Jin & Platnick & Booysen, 2021

Haddad, Charles R., Jin, Chi, Platnick, Norman I. & Booysen, Ruan, 2021, Capobula gen. nov., a new Afrotropical dark sac spider genus related to Orthobula Simon, 1897 (Araneae: Trachelidae), Zootaxa 4942 (1), pp. 41-71: 59-60

publication ID

https://doi.org/10.11646/zootaxa.4942.1.2

publication LSID

lsid:zoobank.org:pub:79353662-7653-4F41-8B39-40E6E4B2E005

DOI

http://doi.org/10.5281/zenodo.4596111

persistent identifier

http://treatment.plazi.org/id/03D67155-FFBD-FFB5-FF25-FCF8A11C2E2C

treatment provided by

Plazi

scientific name

Capobula ukhahlamba
status

spec. nov.

Capobula ukhahlamba   spec. nov.

Figs 10 View FIGURES 3–10 , 73, 74 View FIGURES 71–74

Type material: Holotype ♀: SOUTH AFRICA: KwaZulu-Natal: Champagne Castle, Hlathikulu Forest , 29°02.366’S, 29°23.421’E, 1560 m a.s.l., 20.I.2011, leg. C. Haddad (base of grass tussocks, grassland-forest ecotone) ( NCA 2018 /35) GoogleMaps   . Paratypes: SOUTH AFRICA: KwaZulu-Natal: Cathedral Peak Forest Station , 75 km WSW Estcourt, 1380 m a.s.l., 14.XII.1979, leg. S. & J. Peck ( Leucosidea   boulder bush scrub, night sweeping), 1♀ ( AMNH)   ; Didima National Park, Cathedral Peak area, Rainbow Gorge , 33.5 km WSW of Winterton, 28°57.600’S, 29°13.635’E, 1518 m a.s.l., 19.I.2011, leg. H. Wood & C. Griswold (sifting leaf litter, Afromontane forest ), 1♀ ( CAS, CASENT 9043022, SA11-041) GoogleMaps   ; Same locality, 28°56.982’S, 29°13.874’E, 1400 m a.s.l., 19.I.2011, leg. C. Haddad (base of grasses and ferns), 1♀ ( MHBU) GoogleMaps   ; Royal Natal National Park , 38.6 km W of Bergville, 28°41.137’S, 28°57.425’E, 1403 m a.s.l., 21.I.2011, leg. H. Wood, C. Haddad & C. Griswold (general collecting in ferns and grass tussocks), 1♀ ( CAS, CASENT 9043423, SA11-046) GoogleMaps   ; Sani Pass , IX.2006, leg. D. Prentice (pitfall traps), 1♀ ( NCA 2008 /1982)   ; Sani Pass elevational project, Ixopo , 30°11.010’S, 30°09.130’E, 900 m a.s.l., 1.I.2009, leg. Univ. of Pretoria students (pitfall traps, site 8a), 1♀ ( NCA 2011 /774) GoogleMaps   .

Diagnosis. Females can be easily distinguished by the large circular ridges surrounding the copulatory openings ( Fig. 73 View FIGURES 71–74 ), the oval rather than teardrop-shaped primary spermathecae ( Fig. 74 View FIGURES 71–74 ), and the presence of a cream Y-shaped marking on the abdominal dorsum ( Fig. 10 View FIGURES 3–10 ), which is absent in the other species ( Figs 3–9 View FIGURES 3–10 ). Male unknown.

Remarks. Although the male of this species is unknown and the female has an inverted Y-shaped cream marking that it absent in congeners, we place this species in Capobula   and not Orthobula   because of the absence of pits along the dorsal midline of the carapace and the anterolaterally-positioned spermathecae; name in apposition.

Etymology. Taken from the name of the Ukhahlamba-Drakensberg Transfrontier Conservation Park, a conservation initiative between South Africa and Lesotho, which includes the distribution range of this species. Ukhahlamba is the isiZulu word meaning “barrier of spears”; noun in apposition.

Female (holotype, NCA 2018/35). Measurements: CL 0.89, CW 0.67, AL 1.06, AW 0.89, TL 2.15 (2.03–2.15), PERW 0.39, MOQAW 0.12, MOQPW 0.16, MOQL 0.15. Length of leg segments: I 0.54 + 0.22 + 0.48 + 0.41 + 0.27 = 1.92; II 0.48 + 0.22 + 0.37 + 0.37 + 0.25 = 1.69; III 0.41 + 0.19 + 0.33 + 0.33 + 0.24 = 1.50; IV 0.57 + 0.24 + 0.48 + 0.54 + 0.30 = 2.13.

Colour: carapace orange-brown, pits and lateral margins brown; chelicerae yellow-brown; endites and labium yellow-brown proximally, distal third cream; sternum yellow, pit margins and lateral margins yellow-brown; palps and legs creamy-yellow; abdomen dark grey dorsally and laterally, dorsally with diverging cream Y-shaped marking in anterior half, narrow cream chevrons in posterior half; venter cream, with faint grey mottling; spinnerets cream.

Leg spination: femora and patellae: spineless; tibiae: I plv 6 rlv 5, II plv 5 rlv 4; metatarsi: I plv 4 rlv 4, II plv 4 rlv 4; tarsi: I plv 3 rlv 3, II plv 3 rlv 2.

Epigyne with tiny copulatory openings in round epigynal ridges ( Fig. 73 View FIGURES 71–74 ); copulatory ducts initially curving medially, looping posteriorly, then laterally, before entering anterolateral primary spermathecae along mesal margin; bursae small and spherical ( Fig. 74 View FIGURES 71–74 ).

Habitat and biology. Distributed in montane grasslands at elevations between 900–1600 m a.s.l.

Distribution. Only known from KwaZulu-Natal, South Africa, with most records from the Drakensberg Mountains ( Fig. 75 View FIGURE 75 ).

AMNH

American Museum of Natural History

CAS

California Academy of Sciences

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Trachelidae

Genus

Capobula