Capobula capensis, 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: 52-54

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.4596105

persistent identifier

http://treatment.plazi.org/id/03D67155-FFA4-FFAB-FF25-FB8DA4F528ED

treatment provided by

Plazi

scientific name

Capobula capensis
status

spec. nov.

Capobula capensis   spec. nov.

Figs 3–4 View FIGURES 3–10 , 54–58 View FIGURES 54–58

Type material. Holotype ♀: SOUTH AFRICA: Western Cape: Cederberg Wilderness Area, Pakhuis Pass, 12.6 km 70° E of Clanwilliam , 32°08.419’S, 19°01.034’E, 773 m a.s.l., 9.X.2011, leg. L. Almeida, C. Griswold & T. Meikle (general collecting, Restionaceae   fynbos) ( CAS, CASENT 9043323, SA11-109) GoogleMaps   . Paratypes: SOUTH AFRICA: Western Cape: Cederberg , leg. G. Smith, 1♂ ( MRAC 133613 View Materials )   ; Cederberg , 32°21’S, 19°10’E, VII.1962, leg. N. Leleup (litter), 1♂ 5♀ ( MRAC 131897 View Materials ) GoogleMaps   ; Cederberg Wilderness Area, Pakhuis Pass , 12.6 km 70° E of Clanwilliam, 32°08.419’S, 19°01.034’E, 773 m a.s.l., 9.X.2011, leg. L. Almeida, C. Griswold & T. Meikle (general collecting, Restionaceae   fynbos), 1♂ ( CAS, CASENT 9043335, SA11-112) GoogleMaps   ; Same locality, 13.5 km 76° E of Clanwilliam, 32°09.014’S, 19°01.793’E, 900 m a.s.l., 9.X.2011, leg. L. Almeida, C. Griswold & T. Meikle (general collecting, Restionaceae   fynbos), 1♀ ( CAS, CASENT 9043334, SA11-112) GoogleMaps   ; Same locality, VII.1962, leg. N. Leleup (litter), 4♂ 35♀ ( MRAC 131979 View Materials )   ; Klein-Dassenberg Road, Farm Trinity , 33°34.94’S, 18°36.08’E, 25–27.XII.2012, leg. D. Ubick, 1♂ ( CAS, CASENT 9055498) GoogleMaps   ; 17 km N Citrusdal, road on E bank of Olifants River , 32°35’S, 19°01’E, 7.I.1989, leg. R. Jocqué, 1♀ ( MRAC 169745 View Materials ) GoogleMaps   ; Touws River [33°20’S, 20°01’E], 1953, leg. J. Gordon, 5♂ 9♀ ( MRAC 127791 View Materials ) GoogleMaps   .

Diagnosis. Females are distinct from congeners by the M-shaped atrial margins, with the copulatory openings positioned in the anterolateral corners ( Fig. 54 View FIGURES 54–58 ). Males of this species share with C. infima   comb. nov. the broad, ridge-like retrolateral tibial apophysis, but can be distinguished by the spike-shaped femoral apophysis and short, stout distal section of the embolus that is directed retro-distally ( Figs 57, 58 View FIGURES 54–58 ), while in C. infima   comb. nov. the femoral apophysis is lobate and the distal section of the embolus long, narrow and curved ( Figs 62, 63 View FIGURES 59–64 ). Males are also similar to C. montana   spec. nov., but have a clearly thicker embolus (compare Figs 57 View FIGURES 54–58 and 68 View FIGURES 65–70 ).

Etymology. Named for the Western Cape Province, from which it originates; Latin adjective.

Female (holotype, CAS, CASENT 9043323). Measurements: CL 0.90, CW 0.70, AL 1.24, AW 1.06, TL 2.35 (1.90–2.35), PERW 0.30, MOQAW 0.11, MOQPW 0.16, MOQL 0.17. Length of leg segments: I 0.67 + 0.27 + 0.57 + 0.51 + 0.28 = 2.30; II 0.59 + 0.23 + 0.48 + 0.44 + 0.27 = 2.01; III 0.51 + 0.21 + 0.33 + 0.43 + 0.25 = 1.73; IV 0.68 + 0.25 + 0.54 + 0.60 + 0.29 = 2.36.

Colour: carapace deep orange-brown, pits and lateral margins brown; chelicerae yellow-brown; endites and labium yellow-brown proximally, distal ends cream; sternum bright yellow-orange, pit margins yellow-brown, lateral margins deep yellow-brown; palps creamy-yellow; legs with femora I and II pale yellow-brown, becoming progressively paler on III and IV, remaining segments creamy-yellow; abdomen dark grey dorsally and laterally, dorsally with seven fine cream chevrons in posterior half to spinnerets; venter paler mottled grey; 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 3.

Epigyne with small copulatory openings positioned anterolaterally in shallow M-shaped ridges ( Fig. 54 View FIGURES 54–58 ); copulatory ducts short and C-shaped, initially curving mesally, then laterally before entering teardrop-shaped lateral primary spermathecae along their interior margin; bursae large, elongate-oval, almost twice the size of primary spermathecae ( Fig. 55 View FIGURES 54–58 ).

Male (paratype, CAS, CASENT 9043335). Measurements: CL 0.83, CW 0.60, AL 0.77, AW 0.60, TL 1.61 (1.58–1.82), PERW 0.27, MOQAW 0.10, MOQPW 0.14, MOQL 0.15. Length of leg segments: I 0.57 + 0.22 + 0.46 + 0.41 + 0.27 = 1.93; II 0.50 + 0.22 + 0.38 + 0.39 + 0.25 = 1.74; III 0.41 + 0.21 + 0.29 + 0.37 + 0.24 = 1.52; IV 0.56 + 0.22 + 0.46 + 0.51 + 0.26 = 2.01.

Colour: carapace deep yellow, pits pale yellow-brown, lateral margins dark yellow-brown; chelicerae pale yellow-brown; endites yellow-brown medially, cream proximally and distally; labium yellow-brown, cream at distal end; sternum bright creamy-yellow, pit margins yellow, lateral margins yellow-brown; palps and legs creamy-yellow; abdomen with yellow dorsal scutum covered in dark grey mottling, cream with grey mottling laterally; venter with creamy-yellow epigastric and ventral sclerites, latter 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 3.

Palpal femur with spike-like retrolateral apophysis; patella with very faint retrolateral ridge; tibia with retrolateral tibial apophysis triangular in ventral view, broad and ridge-like in retrolateral view; embolus short and stout, tip directed retrodistally ( Figs 56–58 View FIGURES 54–58 ).

Habitat and biology. Mainly collected from litter or by hand in fynbos habitats.

Distribution. Only known from a few localities in the Western Cape, South Africa ( Fig. 75 View FIGURE 75 ).

T

Tavera, Department of Geology and Geophysics

CAS

California Academy of Sciences

R

Departamento de Geologia, Universidad de Chile

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Trachelidae

Genus

Capobula