Chococtenus otonga, 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 : 454-456

Chococtenus otonga new species

Figs 1–5 , 53 , 55 , 57 .

Type material. Male holotype from Ecuador, Cotopaxi Province, Otonga Biological Reserve (- 00.41994°S - 79.00623°W), 05– 19.ix. 2014, pitfall, 1997 m, N. Dupérré, E. Tapia, C. Tapia ( QCAZ). One female paratype from Cotopaxi Province, Otonga Biological Reserve, 24.v.–08.vi. 2014, hand collecting, N. Dupérré, E. Tapia, C. Tapia ( QCAZ).

Additional material examined. Ecuador: Cotopaxi Province: Otonga Biological Reserve (- 00.41941°S - 78.99607°W), 24.v.–08. vi. 2014, 5 ♂ 4 ♀, pitfall, 1717m, E. Tapia, C. Tapia, N. Dupérré ( AMNH); 08– 21. vi. 2014, 1 ♀ (DTC); 03– 16. viii. 2014, 1 ♀ (DTC); 03– 16. viii. 2014, 1 ♂ 2 ♀ (DTC); 03– 16. viii. 2014, 2 ♂ (DTC); 05– 19. ix. 2014, 3 ♂ 2 ♀ ( AMNH); 13–25. xi. 2014, 1 ♀ (DTC); 25.xi–08. xii. 2014, 2 ♂ 2 ♀ (DTC); (- 00.41433°S - 79.00035°W), 21.v.–08. vi. 2014, 2 ♂ 2 ♀, pitfall, 1888m, E. Tapia, C. Tapia, N. Dupérré ( AMNH); 08– 21. vi. 2014, 2 ♀ (DTC); 03– 16. viii. 2014, 1 ♂ 1 ♀ (DTC); 03– 16. viii. 2014, 2 ♂ (DTC); 16.viii.–05. ix. 2014, 5 ♂ 2 ♀ (DTC); 05– 19. ix. 2014, 2 ♂ 2 ♀ ( AMNH); 19.ix.–02. x. 2014, 2 ♀ (DTC); 13–25. xi. 2014, 3 ♂ (DTC); 25.xi–08. xii. 2014, 2 ♂ 1 ♀ (DTC); (00.41994°S – 79.00623°W), 08– 21. vi. 2014, 1 ♂, pitfall, 1997m, E. Tapia, C. Tapia, N. Dupérré ( QCAZ); 16.viii–05. ix. 2014, 1 ♀ (DTC); 16.viii–05. ix. 2014, 1 ♂ (DTC); 19.ix.–02. x. 2014, 1 ♂ 1 ♀ (DTC); 13–25. xi. 2014, 1 ♂ 2 ♀ (DTC); 25.xi–08. xii. 2014, 2 ♂ 1 ♀ (DTC); (- 00.41564°S - 79.00425°W), 03– 16. viii. 2014, 3 ♀, pitfall, 2105m, E. Tapia, C. Tapia, N. Dupérré (DTC); 03– 16. viii. 2014, 1 ♂ (DTC); 16.viii.–05. ix. 2014, 2 ♂ 2 ♀ (DTC); 04– 07. ix. 2014, 1 ♀ (DTC); 05– 19. ix. 2014, 7 ♂ (DTC); 05– 19. ix. 2014, 1 ♂ (DTC); 25.xi–08. xii. 2014, 3 ♂ (DTC); Otonga Biological Reserve, 24.v.–08. vi. 2014, 1 ♂, hand collecting, E. Tapia, C. Tapia, N. Dupérré (DTC); 21.vi.– 02. vii. 2014, 5 ♂ 2 ♀, pitfall ( AMNH); 04–07.ix. 2014,1 ♂, beating, E. Tapia, C. Tapia (DTC); 24–30. v. 2014, 10 ♂ 2 ♀, night collecting, 1717m, E. Tapia, C. Tapia, N. Dupérré (DTC); 04–07. ix. 2014, 1 ♂ 1 ♀, night collecting, 1997m, E. Tapia, C. Tapia (DTC); Las Pampas, 10. xi. 1997, 1 ♂, 1800m, G. Onore ( QCAZ); Las Pampas, 30. vi. 1997, 1 ♂, I. Tapia ( QCAZ); Las Pampas (- 00° 25 ’ 16 ’’S - 78 ° 57 ’04´´W), 02. vii. 1997, 1 ♂, 30. vi. 1997, 1 ♂, 1500m, I. Tapia, P. Ponce ( QCAZ); San Francisco de Las Pampas (- 00° 25 ’00’’S - 78 ° 55 ’00´´W) 01. iv. 2007, 1 ♂ 1 ♀, 1500m, G. Onore ( QCAZ). Pichincha Province: Las Tolas (0° 5 ’29.9’’N 78 ° 43 ’2.7’’W) 11. xi. 2012, 1 ♂ 1 ♀, 1607m, L. Jaramillo ( QCAZ); Guajalito (0° 13 ’ 53 ’’N 78 ° 48 ’ 10 ’’W) 01. xi. 2013, 1 ♀, 1800m, S. Males ( QCAZ); Rio Guajalito (0° 13 ’ 59 ’’N 78 ° 49 ’0.1’’W) 02. xi. 2013, 1 ♀, 1800m, D. Coral ( QCAZ); Rio Guajalito (0° 53 78 ° 48 ’10.1’’W) 19. i. 2002, 1 ♂, 1800m, S. Pandun ( QCAZ); Rio Guajalito, 01. xii. 1996, 1 ♂, 1100m, T. Morán ( QCAZ); Santa Lucia (00°07’05.3’’N 78 ° 36 ’ 43.W) 26. x. 2013, 1 ♂, 1901m, L. Jaramillo ( QCAZ); Quito-Nanegalito km 28, 16. i. 1993, 1 ♀, 2000m ( QCAZ); Palmeras, 21. x. 1989, 1 ♀, M. Calderon ( QCAZ); Palmeras, 20. x. 1979, 1 ♂, G. Romero ( QCAZ).

Etymology. The specific name is a noun in apposition taken from the type locality, Otonga Biological Reserve.

Diagnosis. Males are distinguished from all species by the basally twisted embolus ( Fig. 2 ). Females are distinguished by the elongated lateral processes of the epigynum, from C. neblina by the pentagonal median sector of the epigynum ( Fig. 4 ), triangular in the later ( Fig. 8 ).

Description. Male (holotype). Total length: 8.5; carapace length: 4.9; carapace width: 3.8; abdomen length: 3.6. COLORATION: Carapace light brown, sides dark brown with pattern composed of blackish lines, meshes, and a few white setae in rows; pars cephalica light brown with blackish lines and white setae behind PLE; pars thoracica apically light brown with dark brown v-line and a few white setae; fovea dark brown ( Fig. 1 ). Sternum yellow, endites and labium light orange-brown. Chelicerae orange-brown with two black stripes ( Figs 1 , 53 ). Abdomen dark brown with pale, half length median band, covered by long black setae, long white setae and spatulate white setae in cluster ( Fig. 1 ). Legs uniformly orange-brown ( Fig. 55 ). LEGS: Total length: I:15.8; II:15.3; III:13.4; IV:16.5. LEGS SPINATION: Femur I p 1 - 1 - 1, r 1 - 1 - 1; tibia I p 1, r0, d0; metatarsus I p0 r0. Femur II p 1 - 1 - 1, r 1 - 1 - 1 - 1; tibia II p 1 - 1, r 1 - 1, d0; metatarsus II p0 r0. Femur III pl- 1 - 1 - 1, r 1 - 1 - 1 - 1; tibia III p 1 - 1, r 1 - 1, d 1 - 1 - 1, v 2 - 2 - 2; metatarsus III p 1 - 1 - 1, r 1 - 1, v 2 - 2 - 2. Femur IV pl- 1 - 1, r 1 - 1; tibia IV p 1 - 1, r 1 - 1, d 1 - 1 - 1, v 2 - 2 - 2; metatarsus IV p 1 - 1 - 1, r 1 - 1, v 1 - 1 - 1-2. GENITALIA: Palpal cymbial keel week ( Fig. 2 ). Ventral tibial apophysis elongated and curved, retrolateral tibial apophysis spine-like ( Figs 2, 3 ). Tegulum oval; median apophysis elongated and curved; conductor lamelliform, hyaline; membranous tegular process hyaline, elongated, reaching embolus tip; embolus base twisted; embolus thin, originating prolaterally; tip straight ( Fig. 2 ).

Female (paratype). Total length: 11.6; carapace length: 4.8; carapace width: 4.1; abdomen length: 6.8. COLORATION: As in male, slightly darker. LEGS: Total length: I: 20.0; II:19.5; III:17.8; IV:21.7. LEGS PINATION: Femur I p 1 - 1 - 1 - 1, r 1 - 1 - 1; tibia I p 1 - 1, r 1 - 1, d 1 - 1 - 1; metatarsus I p 1 - 1 - 1, r 1 - 1 - 1. Femur II p 1 - 1 - 1 - 1, r 1 - 1 - 1; tibia II p 1 - 1, r 1 - 1, d 1 - 1 - 1; metatarsus II p 1 - 1 - 1 r 1 - 1. Femur III pl- 1 - 1 - 1, r 1 - 1 - 1; tibia III p 1 - 1, r 1 - 1, d 1 - 1 - 1, v 2 - 2 - 2; metatarsus III p 1 - 1 - 1, r 1 - 1, v 2 - 2 - 2. Femur IV pl- 1 - 1 - 1, r 1 - 1 - 1; tibia IV p 1 - 1, r 1 - 1, d 1 - 1 - 1, v 2 - 2 - 2; metatarsus IV p 1 - 1 - 1, r 1 - 1 - 1 - 1, v 1 - 1 - 1-2. GENITALIA: Epigynum with pentagonale median sector, apically with wide unsclerotized region; slightly concave; lateral processes elongated ( Fig. 4 ). Internal genitalia with elongated, curved copulatory ducts; head of spermathecae rounded with pore apically, base of spermathecae triangular; fertilization ducts elongated ( Fig. 5 ).

Natural history. Most specimens where collected in pitfall lines set up between 1717–2105 m, a few were also collected on leaves at night, other specimens studied were collected between 1100–2000 m. This generalist species inhabit both the low evergreen montane forest and the cloud forest.

Distribution. Ecuador: Cotopaxi and Pichincha Provinces ( 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 1 – 5. Chococtenus otonga new species. Male. 1 – 3. Female. 4, 5. 1. Habitus, dorsal view. 2. Palp, ventral view. 3. Palp, retrolateral view. 4. Epigynum, ventral view. 5. Internal genitalia, dorsal view. Abbreviations: Male genitalia: c, conductor; ck, cymbial keel; e, embolus; eb, embolus base; ma, median apophysis; mtp, membranous tegular process; rta, retrolateral tibial apophysis; te, tegulum; vta, ventral tibial apophysis; vtp, ventral tibial process. Female genitalia: bs, base of spermathecae; cd, copulatory ducts; fd, fertilization ducts; hs, head of spermathecae; ilp, internal lateral pockets; lp, lateral processes; ms, median sector; ums, unsclerotized median sector.

FIGURES 53, 54. 53. Male Chococtenus otonga new species, frontal view. 54. Female Chococtenus neblina new species, frontal view.

FIGURES 55, 56. 55. Male Chococtenus otonga new species. 56. Female Chococtenus neblina new species.

FIGURES 6 – 9. Chococtenus neblina new species. Male. 6, 7. Female. 8, 9. 6. Palp, ventral view. 7. Palp, retrolateral view. 8. Epigynum, ventral view. 9. Internal genitalia, dorsal view. Abbreviations: Male genitalia: rts, retrolateral tegular swelling. Female genitalia: cd, copulatory ducts; ilp, internal lateral pockets.