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

DOI

http://doi.org/10.5281/zenodo.5987884

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 34‒35 View FIGURE34 View FIGURE 35 , 69 View 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], 3200m GoogleMaps   , 4♀ 8imm., 14.II.1965, H. Levi leg. (MCZ 46059; 46062); Tarma, 3100m, 3♀, 11‒12.II.1965, H. Levi leg. ( MCZ 46063 View Materials ); Cochas Bajo [11°25'20"S; 75°46'10"W], 11km W of Tarma, 3600m GoogleMaps   , 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 24097 View Materials ) GoogleMaps   ; La Paz, La Cumbre [16°20'S; 68°01'W], 1♀, 2.VIII.1993, A.D. Brescovit & H. Höfer leg. ( MCN 24072 View Materials ) GoogleMaps   ; La Paz, Laguna Viscachani [17°13'S; 69°36'W], 4♀, 5.VIII.1993, A.D. Brescovit leg. ( MCN 23 View Materials 865) GoogleMaps   ; La Paz, Vale do Zongo, Laguna Viscachani , 2♀, 5.VIII.1993, H. Höfer leg. ( MCN 24100 View 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], 3600m GoogleMaps   , 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 68118 View 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‒E View FIGURE34 , 36C‒E View 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‒B View 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‒D View 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‒D View FIGURE 35 ), both specimens present the ventral lobe depressed ventrally.

Description. Male ( MCN 24097 View Materials ). Carapace and chelicerae brownish orange ( Fig. 34A View FIGURE34 ). Endites orange; labium dark orange. Sternum orange with darker margins, and marbled with dark pigment ( Fig. 34B View FIGURE34 ). Palps light orange ( Fig. 35A‒B View 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‒E View FIGURE34 ). Abdomen grey ( Fig. 34A‒B View 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‒B View FIGURE 35 ). Legs: robust and coated with setae ( Fig. 34C‒E View 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‒E View 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 23865 View Materials ). Carapace and chelicerae reddish orange ( Fig. 34F View 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. 34G View FIGURE34 ). Palps reddish orange, gradually darkening to distal direction ( Figs 34F‒G View 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‒I View FIGURE34 ). Abdomen as in male ( Fig. 34F‒G View FIGURE34 ). Total length 10.4; carapace 4.36 long, 3.04 wide. Carapace with cephalic region elevated ( Fig. 34F View 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‒I View 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‒I View 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‒D View 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. 69 View 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