Ariadna arthuri Petrunkevitch, 1926

Giroti, André Marsola & Brescovit, Antonio Domingos, 2018, The taxonomy of the American Ariadna Audouin (Araneae: Synspermiata: Segestriidae), Zootaxa 4400 (1), pp. 1-114: 64-65

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-FFDB-B15A-169B-F8E4C4CEF878

treatment provided by

Plazi

scientific name

Ariadna arthuri Petrunkevitch, 1926
status

 

Ariadna arthuri Petrunkevitch, 1926 

Figures 38‒39View FIGURE38View FIGURE39, 68View FIGURE68

Ariadna arthuri Petrunkevitch, 1926: 48  , figs 8‒10 (Immature holotype from Santa Maria Bay, Saint Thomas [18°21'52"N; 64°59'47"W], Virgin Islands, Lesser Antilles, deposited in Peabody Museum, not examined).— Petrunkevitch (1929: 59, fig. 41).— Beatty (1970: 472, figs 8‒9, 26‒27, 32).— World Spider Catalog (2018).

Note. This species was identified based on the descriptions and illustrations of specimens identified by Beatty (1970). The specimens examined in this study are identified as “J.A.B.”. after the collection number.

Material examined. UNITED STATES OF AMERICA: Florida State: Monroe County: Squirrel Key [24°40'38"N; 81°37'23"W], 1♀, 29.VIII.1967, R. Silberglied leg. ( MCZ 46081View Materials)GoogleMaps  ; Squirrel Key, opposite E-1, under bark of red mangrove [24°40'38"N; 81°37'23"W], 1♀, 4.VII.1967, R. Silberglied leg. ( MCZ 128432View Materials; J.A.B.); Key E-2, east side of Upper Snipe Key , Lower Keys [24°40'40"N; 81°39'09"W], 1♀, 12.VI.1966, D. Simberloff & E.O. Wilson leg. ( MCZ 46152View Materials)GoogleMaps  ; Big Pine Key [24°41'10"N; 81°21'40"W], 1♀, 29.XII.1956, F. & C. Phillips leg. ( MCZ 128431View Materials; J.A.B.); CUBA: Villa Clara Province: Santa Clara, Prosa Ochoa y Ochoyta [22°24'24,91"N; 79°57'53,78"W], 2♀ 2imm., 26.V.2006, R. Teruel leg. ( IBSP 166774View Materials)GoogleMaps  ; Camagüey Province: Camagüey, Sierra de Cubitas; Limones-Tuabaquey Ecological Reserve [21°34'56,69"N; 77°45'0,47"W], 1♂ 4♀ 5imm., III ‒IV.2012, CarBio T. leg. ( IBSP 166771View Materials)GoogleMaps  ; Holguín Province: Moa, El Toldo [20°38'23"N; 74°55'03"W], 2♀ 4imm., 2.XI.1997, A. Foug leg. ( IBSP 166772View Materials)GoogleMaps  ; Guantánamo Province: Baracoa, Parque Nacional Humboldt [20°27'N; 75°00'W], 2♀ 1imm., 2.III. 1 998, A. Sánchez leg. ( IBSP 166773View Materials)GoogleMaps  ; Santiago de Cuba Province: Santiago de Cuba, Sierra Cristal , La China, 640m (20°27'33.5"N; 75°32'06.1"W), 1♀, 2.XI.2009, A. Sánchez leg. ( IBSP 166775View Materials)GoogleMaps  ; Santiago de Cuba, Silvarey, Cueva Atabex (19°57'41.1"N; 75°42'56.1"W), 1♀, 19.III.1998, A. Sánchez leg. ( IBSP 166776View Materials)GoogleMaps  .

Diagnosis. Ariadna arthuri  is similar to A. obscura  , A. tarsalis  , A. multispinosa  , A. reginae  n. sp. and A. aurea  n. sp. due to the morphology of the male metatarsi I ( Figs 16C ‒EView FIGURE 16, 32C ‒EView FIGURE 32, 38C ‒EView FIGURE38, 54C ‒EView FIGURE54, 56C ‒EView FIGURE 56) and macrosetae pattern of the tibia I ‒II of females, but differ by the presence of males with a sinuous metatarsi I, with two apophyses on the distal region, bearing thickened macrosetae ( Fig. 38C ‒EView FIGURE38); females differ by the presence of the anterior receptaculum with a sinuous dorsal lobe and a expanded ventral lobe, mainly at the base ( Fig. 39C ‒DView FIGURE39).

Description. Male ( IBSP 166771): Carapace and chelicerae orange ( Fig. 38AView FIGURE38). Endites yellow; labium dark yellow. Sternum light yellow, with darker margins, and marbled with dark pigment, also present in the labium ( Fig. 38BView FIGURE38). Palps light yellow ( Fig. 39A ‒BView FIGURE39). Legs yellow with pairs I ‒II darker ( Fig. 38C ‒EView FIGURE38). Abdomen light grey, darker dorsally ( Fig. 38A ‒BView FIGURE38). Total length 4.36; carapace 2.16 long, 1.52 wide. Chelicerae projected ( Fig. 38AView FIGURE38). Palps: tibia incrassated, with the dorso-ventral diameter similar to the bulb; rounded bulb, mid-portion shorter than the embolus; embolus tubular, curved and tapered ( Fig. 39A ‒BView FIGURE39). Legs: robust and sparsely coated with setae ( Fig. 38C ‒EView FIGURE38); tarsal brush of putative chemosensory setae present in legs II ‒IV. Leg formula: I-II-IV-III. Leg measurements: I, femur 2.04, patella 0.8, tibia 2.0, metatarsus 2.08, tarsus 0.56, total 7.48; II, 2.0, 0.72, 1.8, 1.88, 0.65, 7.05; III, 1.56, 0.64, 1.16, 1.16, 0.44, 4.96; IV, 1.68, 0.8, 1.44, 1.24, 0.48, 5.64. Macrosetae: I, femur D0-0-0- 1-0-2-0, P0-0-0-0-1/2-1-0; tibia D0-0-0-0-1-0-0, P1-0-1-0-0-1-0, vp0/1-0-0-0-0-0-0, vr1-1-1-1-1/0-1-1, R0-0/1-0- 1-0-0-1; metatarsus vp1-0-0-0-1(truncated/apophysis)-0-1, vr1-0-0-0-1(truncated/apophysis)-0-1 ( Fig. 38C ‒EView FIGURE38); II, femur D0-0-0-1/0-1-2-0, P0-0-0-0-1-1-0; tibia D0-0-0-0-1-0-0, P1-0-1/0-0-0-1-0, vp0-0-0-0-0-0-1, vr2-1-1-1-1-1- 1, R1-0-1-0-1-0-1-0; metatarsus vp1-0-0-1-0-0-1, vr1-1-0-1-0-0-1, r0-1-0-0-0-1-0; IV, metatarsus vp0-0-0-0-0-0-2/ 1, vr metatarsal comb with 2 macrosetae.

Female ( IBSP 166771): Carapace and chelicerae orange ( Fig. 38FView FIGURE38). Endites orange; labium dark orange. Sternum light orange, with darker margins, and marbled with dark pigment ( Fig. 38GView FIGURE38). Palps orange, gradually darkening to distal direction ( Fig. 38F ‒GView FIGURE38). Legs orange with pairs I ‒II darker, and dark conspicuous bands present in the ventral region of the femur, patella, tibia and metatarsus ( Fig. 38H ‒IView FIGURE38). Abdomen as in male ( Fig. 38F ‒GView FIGURE38). Total length 5.2; carapace 2.52 long, 1.6 wide. Carapace with cephalic region slightly elevated, and wavy margins. Chelicerae not projected ( Fig. 38FView FIGURE38). Legs: robust and coated with setae; legs I ‒II with ventro-prolateral and ventroretrolateral tibial macrosetae of similar size, and metatarsal macrosetae of different sizes ( Fig. 38H ‒IView FIGURE38). Leg formula: I-II-IV-III. Leg measurements: I, femur 1.76, patella 0.84, tibia 1.6, metatarsus 1.44, tarsus, 0.44, total 6.08; II, 1.6, 0.76, 1.48, 1.28, 0.44, 5.56; III, 1.32, 0.64, 0.96, 0.88, 0.4, 4.2; IV, 1.68, 0.84, 1.36, 1.04, 0.4, 5.32. Macrosetae: I, femur D0-0-0-1/0-0-2-0, P0-0-0-1-1-1-0; tibia P0-1-0-1-0-1-0, vp1-1-1-1-1-1-0, vr1-1-1-1-1-1-1, R0-1-0-1-0-0; metatarsus vp1-1-1-1-1-1-1-1, vr1-1-0/1-1-1-1-1-1 ( Fig. 38H ‒IView FIGURE38); II, femur D0-0-0-0-0-2-0, P0-0-0- 0-1-1-0; tibia P0-1-0-0-1-0-0, vp1-1-1-1-1-1-0, vr1-1-1-1-1-1-1, R0-0-1-1-0-0; metatarsus vp1-1-1-1-1-1-1-1, vr1- 1-0/1-1-1-0/1-1; IV, metatarsus vp0-0-0-0-0-0-1, vr metatarsal comb with 2 macrosetae. Internal genitalia: anterior receptaculum with the ventral lobe longer than the dorsal one, and glandular ducts plate located in the median region of the receptaculum, with proximal region expanded ( Fig. 39C ‒DView FIGURE39).

Variation. Female (n=10): Total length 4.08‒8.28; carapace 1.84‒3.76 long, 1.16‒2.4 wide; femur I 1.2‒2.6.

Distribution. USA (Florida), Virgin Islands and Cuba ( Fig. 68View FIGURE68).

MCZ

Museum of Comparative Zoology

IBSP

Instituto Biologico de Sao Paulo

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Segestriidae

Genus

Ariadna

Loc

Ariadna arthuri Petrunkevitch, 1926

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

Ariadna arthuri

Petrunkevitch 1926: 48
1926