Ctenus datus Strand 1909

Dupérré, Nadine, 2014, Demystifying three species of Ctenidae (Arachnida: Araneae) described by Embrik Strand. Part I, Ecuador, Zootaxa 3784 (1), pp. 67-73 : 68-69

Ctenus datus Strand 1909

Figs 1–3 .

Ctenus datus Strand 1909: 316 .

Type material. Label 1: Species: Ctenus datus Strand. Fundort : 1♀ Holotype (Cotype), Cachabé. Leg. Rosenberg, 29.9.1898. Det. Strand 1909. Zool. Mus. Berlin: Kat Nr. 30656. Label 2: Cachabé. Von Herrn Rosenberg in London. 28- 9-1898. Label 3: Ctenus datus Strand [Type!]. (Deposited ZMB) EXAMINED.

Diagnosis. Females can be distinguished from all other Ctenus species by the shape of the ovoid lobes ( Figs 1, 2 ); from C. amphora by the ovoid lobes separated by a deep to shallow groove ( Figs 1, 2 ) without space; from C. vehemens by the oval spermathecae ( Fig. 3 ), rounded in the later.

Description. (specimen faded): Female: Total length: 14.3; carapace length: 6.1; carapace width: 4.9. CEPHALOTHORAX: Carapace orange, slightly darker along radiating lines; pyriform; fovea long; covered with short white setae. Clypeus low (1 x AME). Sternum light orange, as long as wide. Endites longer than wide; labium not notched. Chelicerae dark reddish-brown, geniculate; promargin with three teeth and retromargin with five teeth. EYES: Eight in three rows; AME rounded, separated by half their width; PME rounded, separated by half their width; AME- PME separated by half the width of AME; ALE oval, small close to PLE; PLE rounded. ABDOMEN: Light beige, elongated oval. LEGS: Orange; leg spination damaged, not examined (see Strand 1909: 317); metatarsus IV unmodified; tarsal claw with one large and two to three small tooth; claw tufts presents. Palpal claw with four large teeth and one small tooth. GENITALIA: Epigynum with large ovoid lobes separated by deep ( Fig. 1 ) to shallow groove ( Fig. 2 ); median sector bulbous and dark ( Figs 1, 2 ); lateral spurs positioned medially ( Figs 1, 2 ). Internal genitalia: copulatory ducts large; spermathecae oval; fertilization ducts curved, situated on the outer side at the base of the spermathecae ( Fig. 3 ).

Male. Unknown.

Other material examined. None.

Notes. This species clearly belongs to the genus Ctenus due to the presence of large ovoid lobes of the epigynum.

Distribution. Ecuador, Esmeraldas Province, San Javier de Cachabi.

Figures

FIGURES 1 – 3. Ctenus datus Strand, 1909. Female 1 – 3. 1. Holotype, epigynum ventral view. 2. Syntype, epigynum ventral view. 3. Syntype, internal genitalia dorsal view. Abbreviations: cd, copulatory ducts; fd, fertilization ducts; ls, lateral spurs; ms, median sector; ol, ovoid lobes; s, spermathecae. Scale bars: 0.5 mm.