Chococtenus piemontana, Dupérré, Nadine, 2015

Dupérré, Nadine, 2015, Description of a new genus and thirteen new species of Ctenidae (Araneae, Ctenidae) from the Chocó region of Ecuador, Zootaxa 4028 (4), pp. 451-484 : 472

Chococtenus piemontana new species

Figs 42, 43 , 57 .

Type material. Male holotype from Ecuador, Santo Domingo de los Tsáchilas, Otonga Biological Reserve, Las Damas (- 00.39506°S - 78.98100°W), 23.vii.–05.viii.2014, pitfall, 1209 m, E. Tapia, C. Tapia, N. Dupérré ( QCAZ).

Additional material examined. Ecuador: Santo Domingo de las Tsáchilas Province: Las Palmeras (- 0.35139°S - 78.95028°W) 1♂, 26.ix. 2010, 1150 m, J. Cobo ( QCAZ).

Etymology. The specific name is a noun in apposition taken from the Spanish language, meaning the type of forest where the spider occur, premontane forest.

Diagnosis. Males are distinguished by the unique, curved retrolateral tibial apophysis ( Fig. 43 ).

Description. Male (holotype). Total length: 9.0; carapace length: 4.1; carapace width: 3.6; abdomen length: 4.9. COLORATION: Carapace and abdomen as in C. otonga . Legs III-IV with black marks on femurs, tibiae and metatarsi. LEGS: Total length: I: missing; II: missing; III: 21.5; IV: 25.0. LEGS SPINATION: Femur III pl-1-1-1, r1-1-1-1; tibia III p1-1, r1-1, d1-1-1, v2-2 -2; metatarsus III p1-1-1, r1-1-1, v2-2 -1. Femur IV pl-1-1, r1-1-1; tibia IV p1-1-1, r1-1-1, d1-0-1, v1-1 -2; metatarsus IV p1-1-1, r1-1-1, v1-1 -1-1. GENITALIA: Palpal cymbial keel strong ( Fig. 42 ). Ventral tibial apophysis rounded, apically transparent, retrolateral tibial apophysis curved ( Figs 42, 43 ). Tegulum oval; median apophysis wide, with small projection prolaterally; conductor lamelliform, short, hyaline; membranous tegular process rectangular, very short; embolus base not twisted; embolus wide basally, originating prolaterally, tip with triangular projection ( Fig. 42 ).

Female. Unknown.

Natural history. Specimens were collected between 1150–1209 m in premontane evergreen forest.

Distribution. Ecuador: Santo Domingo de los Tsáchilas Province ( Fig. 57 ).

Figures

FIGURE 57. Map of Ecuador showing distribution records of the thirteen new species of the genus Chococtenus. The main collecting site, Otonga Biological Reserve (white box with x inside), holds 10 species (not found: C. suffuscus, C. otongachi and C. piemontana). Other known localities for: C. otonga (white lozenge), C. cappuccino (white x), C. lasdamas (white circle), C. suffuscus (white plus sign), C. otongachi (white rectangle) and C. piemontana (upside down white triangle).

FIGURES 42, 43. Chococtenus piemontana new species. 42. Male palp, ventral view. 43. Male palp, retrolateral view.