Ariadna cephalotes Simon, 1907

Giroti, André Marsola & Brescovit, Antonio Domingos, 2018, The taxonomy of the American Ariadna Audouin (Araneae: Synspermiata: Segestriidae), Zootaxa 4400 (1), pp. 1-114: 57-59

publication ID

http://doi.org/ 10.11646/zootaxa.4400.1.1

publication LSID

lsid:zoobank.org:pub:59CC08B8-5B13-42EC-943E-C930D7D0DD7F

persistent identifier

http://treatment.plazi.org/id/039B87D1-FFDC-B120-169B-FF54C3F0F882

treatment provided by

Plazi

scientific name

Ariadna cephalotes Simon, 1907
status

 

Ariadna cephalotes Simon, 1907 

Figures 34‒35View FIGURE34View FIGURE 35, 69View FIGURE 69

Ariadna cephalotes Simon, 1907: 262  (♀ lectotype and immature lectoparatype from San Mateo, BoliVia [16°19'40"S; 59°36'52"W], Garlepp leg., deposited in MNHNP-AR 14384 and 14385, respectively, designated by Beatty (1970), examined).— Petrunkevitch (1911: 131).— Bonnet (1955: 732).— Beatty (1970: 465, fig. 11).— Grismado (2008: 353, figs 8J ‒K, 9E ‒F).— World Spider Catalog (2018).

Ariadna hotchkissi Chamberlin, 1916: 216  , pl. 10, figs 4‒5 (Immature holotype from Lucma, Cuzco, Peru, 7100ft. (2130m), 1.VIII.1911, H.W. Foote & Y.P. Exp. leg., deposited in MCZ 15693, not examined).— Beatty (1970: 465, Syn.).

Additional material examined. PERU: Apurimac Department: 37km S. of Andahuaylas [13°39'27"S; 73°23'00"W], 1♀ 3imm., 6.III.1951, Ross & Michelbacher leg. ( AMNH)GoogleMaps  ; Junín Department: Tarma [11°25'11"S; 75°41'27"W], 3200mGoogleMaps  , 4♀ 8imm., 14.II.1965, H. Levi leg. (MCZ 46059; 46062); Tarma, 3100m, 3♀, 11‒12.II.1965, H. Levi leg. ( MCZ 46063View Materials); Cochas Bajo [11°25'20"S; 75°46'10"W], 11km W of Tarma, 3600mGoogleMaps  , rock ledge in agricultural valley, 2♀ 2imm., 29.III.1988, J. Palmer leg. (MCZ 40718); BOLIVIA: La Paz Department: La Paz, Vale do Zongo, Sainani [16°06'S; 68°04'W], 1♂ 2imm., 4.VIII.1993, H. Höfer leg. ( MCN 24097View Materials)GoogleMaps  ; La Paz, La Cumbre [16°20'S; 68°01'W], 1♀, 2.VIII.1993, A.D. Brescovit & H. Höfer leg. ( MCN 24072View Materials)GoogleMaps  ; La Paz, Laguna Viscachani [17°13'S; 69°36'W], 4♀, 5.VIII.1993, A.D. Brescovit leg. ( MCN 23View Materials 865)GoogleMaps  ; La Paz, Vale do Zongo, Laguna Viscachani , 2♀, 5.VIII.1993, H. Höfer leg. ( MCN 24100View Materials)  ; La Paz, Vale do Zongo, Laguna Viscachani , 3660m, 4♀ 4imm., 5.VIII.1993, A.D. Brescovit & H. Höfer leg. ( SMNK-ARA 1376)  ; La Paz, Laguna Viscachani , 3660m, 1♀, 5.VIII.1993, A.D. Brescovit leg. ( SMNK-ARA 1398)  ; Botijlaca [16°12'56"S; 68°06'58"W], 3600mGoogleMaps  , 3♀, 2.XI.1984, L.E. Peña leg. (AMNH); Songotal, 3800m, 1♂ 7♀ 5imm., 30.II.1953, Forster & Schlinder leg. (AMNH); Cochabamba Department: Cochabamba, Escola de Agronomia, Next to Ivirganzama , 215m (17°06'17,3"S; 64°46'56,5"W), 1♀, 8.XII.2010, R. Pinto-da-Rocha et al. leg. ( MZSP 68118View Materials)GoogleMaps  ; Morochata [17°14'04"S; 66°31'56"W], 1♀, 10.X.1983, A. Roig leg. (MACN-Ar 10123)GoogleMaps  ; ARGENTINA: Jujuy Department: Calilegua National Park [23°55'S, 64°50'W], near Sevenguillar, 3km up to Mesada de las Colmenas , c. 1600m, 1♀, 7.VIII.1997, M. Ramírez & L. Compagnucci leg. (MACN-Ar 10120).GoogleMaps 

Diagnosis. Ariadna cephalotes  is similar to A. boliviana  due to the morphology of the male metatarsi I, with short ventro-prolateral macrosetae ( Figs 34C ‒EView FIGURE34, 36C ‒EView FIGURE 36), and tibiae I ‒II macrosetae pattern of females, but differ by the male palp with short embolus with a basal anterior keel ( Fig. 35A ‒BView FIGURE 35); females differ by the presence of an anterior receptaculum with the dorsal lobe with enlarged tip, and ventral lobe depressed ventrally ( Fig. 35C ‒DView FIGURE 35).

Note. Although Grismado's drawing (2008: figs 8J ‒K) show the dorsal lobe with a less enlarged tip that the specimen we present in this study ( Figs 35C ‒DView FIGURE 35), both specimens present the ventral lobe depressed ventrally.

Description. Male ( MCN 24097View Materials). Carapace and chelicerae brownish orange ( Fig. 34AView FIGURE34). Endites orange; labium dark orange. Sternum orange with darker margins, and marbled with dark pigment ( Fig. 34BView FIGURE34). Palps light orange ( Fig. 35A ‒BView FIGURE 35). Legs orange, with pairs I ‒II darker and dark pigment forming diffuse rings in the distal region of femur, patella, tibia, metatarsi and tarsi ( Fig. 34C ‒EView FIGURE34). Abdomen grey ( Fig. 34A ‒BView FIGURE34). Total length 6.24; carapace 2.72 long, 2.08 wide. Palps: tibia incrassated, with the dorso-ventral diameter shorter than the bulb; bulb rounded, mid-portion and embolus with equal lenghts; embolus tubular and curved abruptly ( Fig. 35A ‒BView FIGURE 35). Legs: robust and coated with setae ( Fig. 34C ‒EView FIGURE34); tarsal brush of putative chemosensory setae present in legs I ‒III, but reduced in pair I. Leg formula: I-II-IV-III. Leg measurements: I, femur 2.68, patella 1.08, tibia 2.16, metatarsus 2.4, tarsus 0.8, total 9.12; II, 2.56, 1.08, 2.28, 2.32, 0.76, 9.0; III, 2.0, 0.88, 1.44, 1.52, 0.64, 6.48; IV, 2.32, 1.04, 1.76, 1.72, 0.64, 7.48. Macrosetae: I, femur D0-0/1-0-1-0-2-0, P0-0-0-2-0-1/0-0; tibia P0-1-0-1-0-1-0, vp1-0-1-0-1-0-1, vr2-0-1-0-1-0-1, R1-0-1-0-1-0-1-0; metatarsus p0-1(blunt)/0-0-0-0-0-0, vp1-0-0-1(blunt)-0-0-1(blunt), vr0-0-0-1- 0-0-1, r0-1(blunt)-1(blunt)-0-0-0-0 ( Fig. 34C ‒EView FIGURE34); II, femur D0-1-0-1-0-1-0-2-0, P0-0-0-0-0-0-1-1-0; tibia P0-0-0- 1-0-1-0, vp0-0-0-0-0-1-1, vr2-0-1-0-1-0-1, R1-0-1-0-1-1-1-0; metatarsus vp1-0-0-1-0-0-1, vr1-0-0-1-0-0-1, r0-1-0- 1-1-0-0; IV, femur D0-1-1-1-1-1-0/1-0-0, R0-0-0-0-0-0-0-1/0-0; tibia vr0-0-0-0-0-0-1, r0-0-0-0-0-0/1-0; metatarsus vp0-0-0-0-1-0-2, vr metatarsal comb with 4 macrosetae.

Female ( MCN 23865View Materials). Carapace and chelicerae reddish orange ( Fig. 34FView FIGURE34). Endites orange; labium reddish orange. Sternum orange with darker margins, marbled with dark pigment, and three pairs of dark marginal areas, the hind one fainted ( Fig. 34GView FIGURE34). Palps reddish orange, gradually darkening to distal direction ( Figs 34F ‒GView FIGURE34). Legs orange, with pairs I ‒II darker and with dark pigment forming diffuse rings in the distal region of the tibia, metatarsus and tarsus ( Fig. 34H ‒IView FIGURE34). Abdomen as in male ( Fig. 34F ‒GView FIGURE34). Total length 10.4; carapace 4.36 long, 3.04 wide. Carapace with cephalic region elevated ( Fig. 34FView FIGURE34). Legs: robust and densely coated with setae; legs I ‒II with ventro-prolateral and ventro-retrolateral tibial macrosetae of similar size, and metatarsal macrosetae of different sizes ( Fig. 34H ‒IView FIGURE34). Leg formula: I-II-IV-III. Leg measurements: I, femur 3.28, patella 1.6, tibia 2.56, metatarsus 2.4, tarsus 0.8, total 10.64; II, 3.12, 1.56, 2.6, 2.36, 0.76, 10.4; III, 2.44, 1.24, 1.72, 1.68, 0.68, 7.76; IV, 2.96, 1.6, 2.24, 1.96, 0.72, 9.48. Macrosetae: I, femur p0-0-0-0-0-1-0; tibia vp1-0-1-0-1-0-1, vr1-0-1-0-1-0-1, r0-1-0-0-0-0-0; metatarsus vp1-1-1-0/1-1-1-1-1-1-1, vr1-1-1-1-1-1-1-1-1 ( Fig. 34H ‒IView FIGURE34); II, tibia vp0-0-1-0-1-0-1, vr1-0-1-0-1-0-1; metatarsus vp1-1-1-1-0/1-1-1-1-1-1-1, vr1-1-1-1-1-1-1/0-1-1-1/0-1; IV, metatarsus vp0-0-0-0-0-0-1, vr metatarsal comb with 5 macrosetae. Internal genitalia: anterior receptaculum with the glandular ducts plate in the median region ( Fig. 35C ‒DView FIGURE 35).

Variation. Males (n=2): Total length 6.24‒7.2; carapace 2.72‒3.5 long, 2.08‒2.6 wide; femur I 2.68‒3.35. Female (n=10): Total length 7.7‒13.6; carapace 3.4‒4.65 long, 2.3‒3.1 wide; femur I 2.35‒3.4. Distribution. Center of Bolivia, center of Peru, and northwestern of Argentina ( Fig. 69View FIGURE 69).

PERU

Universit� di Perugia

AMNH

American Museum of Natural History

MCZ

Museum of Comparative Zoology

MCN

McNeese State University

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Segestriidae

Genus

Ariadna

Loc

Ariadna cephalotes Simon, 1907

Giroti, André Marsola & Brescovit, Antonio Domingos 2018
2018
Loc

Ariadna hotchkissi

Chamberlin 1916: 216
1916
Loc

Ariadna cephalotes

Simon 1907: 262
1907