Kukulcania tractans (O. Pickard-Cambridge, 1896 ), O. Pickard-Cambridge, 1896

Magalhaes, Ivan L. F. & Ramírez, Martín J., 2019, The Crevice Weaver Spider Genus Kukulcania (Araneae: Filistatidae), Bulletin of the American Museum of Natural History 426, pp. 1-153: 115-120

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http://doi.org/ 10.1206/00030090-426.1.1

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Kukulcania tractans (O. Pickard-Cambridge, 1896 )


Kukulcania tractans (O. Pickard-Cambridge, 1896)  

Figures 2 View FIGURE 2 G–I, 4 View FIGURE 4 A, 5 View FIGURE 5 A, 6 View FIGURE 6 F, 9 View FIGURE 9 A, 15 View FIGURE 15 , 23 View FIGURE 23 , 27 View FIGURE 27 E, 28 View FIGURE 28 E, 29 View FIGURE 29 E, 31 View FIGURE 31 E, 69–72 View FIGURE 69 View FIGURE 70 View FIGURE 71 View FIGURE 72

Filistata tractans O. Pickard-Cambridge, 1896: 183   , plate 23, fig. 4. F.O. Pickard-Cambridge, 1899: 47, plate 3, fig. 9; Gertsch, 1979: 90, fig. 3A, C. Male holotype from Mexico, Guerrero (NHM), examined by photos.

Filistata capillosa O. Pickard-Cambridge, 1899: 289   , plate 32, fig. 1. First synonymized by F.O. Pickard-Cambridge, 1899. Female syntype from Mexico, Guerrero (OUNHM), examined by photos.

Kukulcania tractans: Lehtinen, 1967: 242   .

TYPE MATERIAL (EXAMINED THROUGH PHO- TOGRAPHS): HOLOTYPE OF F . TRACTANS: MEX- ICO: Guerrero: Amula, H. H. Smith , 1♂, labeled “♂ –Type –Amula –H.H.S. –1029”, deposited in the NHM (figs. 69A–C, 70 E). SYNTYPE OF F . CAP-

ILLOSA: MEXICO: Guerrero: Amula,♀, labeled “ Filistata capillosa Cb., Amula   , 206,” deposited in OUMNH (fig. 71C, E).


REMARKS: We have not been able to examine the type material of this species in person, and relied on pictures and notes kindly taken by Stuart Longhorn during his visits to the collections in the

NHM and in OUMNH. Octavius Pickard-Cambridge (1896) described this species based on a male from Guerrero, Amula. A few years later, he described a female identified by him as F . tractans   based on material from Orizaba and also described F . capillosa (O. Pickard-Cambridge, 1899)   from Amula and Omilteme [sic, probably Omitelmi]. The same year, his nephew and fellow arachnologist F.O. Pickard-Cambridge (1899) correctly synonymized both names and cited the species from several localities in Guerrero. He also mentions that the female from Orizaba described by O. Pickard-Cambridge is not conspecific with F . tractans   . We have examined this female specimen only through photographs and were not able to dissect it, but the lack of a dense fringe of setae on the first pair of legs makes it clear that it is another species of Kukulcania   , maybe K . hibernalis   . A male in the NHM collection labeled “♂ –Type – Amula –H.H.S. –1029” seems to be the holotype of F . tractans   . There are other male and female specimens in the NHM and OUMNH collections, but these seem to be specimens later identified by F.O. Pickard-Cambridge; one female is labeled a “deuterotype.” The type material of F . capillosa   is more difficult to trace. O.P. Cambridge (1899) examined females from Amula and Omitelme, but the specimens from the latter locality could not be found. There is a female labeled as “ Filistata   capil- losa Cb., Amula” in the OUMNH, and we interpret this as part of the type series of this species. According to S. Longhorn, there might be other syntypes from Amula deposited in the NHM collection. We have not examined the genitalia of this syntype, but its somatic morphology with a dense fringe of setae in the legs makes it clear that it is conspecific with K . tractans   .

DIAGNOSIS: This large species can be recognized by the very long palps (the palpal femur can reach 10 mm in length) and by the long, gently sinuous shape of the bulb (fig. 70). Females share a very dense fringe of setae in the first two pairs of legs with K . utahana   and K . hurca   (fig. 71F), but can be easily differentiated by the lack of sclerotized bars in the genitalia. The female genitalia is more similar to that of K . tequila   in having a short membranous stalk and a large, sclerotized glandular portion of the spermathecae, lacking the membranous portion of the spermathecae. K . tractans   can be distinguished by the shorter membranous stalk and by the stouter, ventrally straight (instead of curved) glandular portion of the spermathecae (figs. 31E, 72).

DESCRIPTION: Male from Taxco, Guerrero, Mexico (AMNH IFM-1662). Coloration light orange. Carapace finely stippled with brown and dark markings on clypeus. Labium endites, sternum and coxae yellowish cream. Abdomen dorsum cream, stippled with brown, with a light-yellow cardiac area. Clypeus short. Sternum oval, with two pairs of sigillae. Total length 10.03. Carapace length 5, width 4.03, clypeus length 0.45. Eye diameters and interdistances: AME 0.34; PME 0.3; ALE   0.322; PLE 0.339; AME–AME 0.084; PME–PME 0.397. Sternum length 2.25, width 2.16. Palp: femur length 10.22, height 0.87; tibia length 9.65, height 0.93. Leg I: femur (fe) 10.8; patella (pa) 2.4; tibia (ti) 10.22; metatarsus (mt) 10.82; tarsus (ta) 5.2. II: fe 9.23; pa 2.02; ti 8.14; mt 9.21; ta 4.56. III: fe 7.96; pa 1.8; ti 6.62; mt 8.2; ta 3.62. IV: fe 10.53; pa 2.03; ti 9.8; mt 11.54; ta 5.11. Abdomen: length 6.03, width 2.72. Palp macrosetae long and numerous, in several rows along femur ventral face. Leg macrosetae: fe I 12d, 2p, 23v, 14r; ti I 2p, 7v, 1r; mt I 2p, 10v, 3r; ta I 7v; fe II 12d, 3p, 15v, 17r; ti II 2p, 6v, 2r; mt II 3p, 12v, 3r; ta II 7v; fe III 11d, 5p, 12v, 3r; ti III 2d, 3p, 6v, 3r; mt III 4p, 11v, 3r; ta III 4v; fe IV 11d, 2p, 7v, 1r; ti IV 1p, 6v, 2r; mt IV 5p, 12v, 2r; ta IV 6v. Palp: cymbium shorter than bulb, cylindrical, with a protruding edge on the prolateral face bearing strong setae; bulb long, piriform, sinuous; sperm duct with four tightly packed coils; embolus S-shaped, slightly bent retrolaterally; tibia very slightly incrassate. State of the specimen: good, left palp and left leg I dissected, left leg IV missing from tibia.

Female from 38 miles S of Iguala, Guerrero, Mexico (AMNH IFM-1661). Coloration light reddishbrown, stippled with dark brown. Labium endites and sternum orange brown. Sternum, femora, and tibia I and II very hirsute, with a fringe of long setae. Abdomen dorsum grayish brown. Anterior margin of the carapace unmodified. Sternum oval, with two pairs of sigillae. Total length 17.61. Carapace length 6.54, width 4.75, clypeus length 0.815. Eye diameters and interdistances: AME 0.287; PME 0.315; ALE   0.43; PLE 0.37; AME–AME 0.087; PME–PME 0.43. Sternum length 3.01, width 2.66. Palp: femur length 3.83, height 1.29; tibia length 2.19, height 1.18. Leg I: femur (fe) 8; patella (pa) 2.85; tibia (ti) 7.1; metatarsus (mt) 6.54; tarsus (ta) 3.43. II: fe 6.49; pa 2.2; ti 5.18; mt 5.02; ta 2.6. III: fe 4.88; pa 1.94; ti 3.94; mt 4.13; ta 2.25. IV: fe 6.54; pa 2.24; ti 5.75; mt 5.48; ta 2.5. Abdomen: length 11.51, width 8.55. Palp macrosetae on ventral surface of tibia and tarsus. Leg macrosetae present on ventral surfaces of tibiae, metatarsi and tarsi; all femora with 2–4 dorsal macrosetae, metatarsus III with one dorsal macroseta. Calamistrum with three rows with 11–15 setae each. Interpulmonary fold large, rounded, covering the spermathecae dorsally. Spermathecae with a single, sclerotized receptacle with a membranous base, sclerotized lateral bars absent. State of the specimen: good, genitalia dissected, right palp missing from tibia.

INTRASPECIFIC VARIATION: Males (N = 5): total length 8.61–10.06 (9.51), carapace length 3.76–5 (4.39), femur I length 8.07–10.8 (9.22), tibia I length 8.05–10.22 (8.9), femur/carapace ratio 2.03–2.16 (2.1). Females (N = 5): total length 10.59–17.98 (14.81), carapace length 3.9–9.33 (6.63), femur I length 4.58–10.99 (7.8), tibia I length 4.35–9.51 (6.92), femur/carapace ratio 1.06–1.29 (1.18). The morphology of the genitalia is surprisingly invariant, although the bulb sometimes rotates inside the cymbium (fig. 70).

NATURAL HISTORY: Specimens in collections have no natural history data associated with their labels. Females seen by S. Longhorn in Guerrero in the field make their webs in tree trunks and stone walls in dry forests (fig. 2G). Females guard their egg sacs by sitting on them in the entrance of their webs (fig. 2H).

DISTRIBUTION: Central Mexico, in the states of Guerrero, Estado de México, Morelos, Puebla, and Tlaxcala (fig. 4A).

ADDITIONAL MATERIAL EXAMINED: MEXICO. Baja California Sur: La Purísima, 1♂ (CAS 9060642) (probably mislabeled, not included in distribution map). Estado de México: Tenancingo [N18.96134°, W99.59107°, 2050m], H. Wagner, 7.x.1946, 7♀ 8 imm. (AMNH). Guerrero: 11 miles W Chilpancingo [N17.57043°, W99.66793°], W.J. Gertsch and V. Roth, 30.vii.1956, 1♀ (AMNH); 38 miles S Iguala [N17.79936°, W99.61363°], V. Roth and W. Gertsch, 29.vii.1956, 1♀ 1 imm. (AMNH IFM-1661); 5 miles N Taxco [N18.62373°, W99.60875°], L. Irby Davis, 2.vii.1944, 1♂ 1 imm. (AMNH IFM-1408); 5 miles NE Taxco [N18.33°, W99.36°], W.J. Gertsch and W. Ivie, 4.v.1963, 1♂ 5 imm. (AMNH); 7 miles S Chilpancingo [N17.44816°, W99.51801°], W.J. Gertsch and V. Roth, 29.vii.1956, 4♀ (AMNH), 4♀ (AMNH), 4♀ (AMNH IFM- 1416); Chilpancingo [N17.55154°, W99.50063°], P. Klass, viii.1978, 1♀ (MCZ 39916); Amojileca (N17.56817°, W99.569°, 1484m), O. Francke et al., 20.vi.2007, 1♀ (CNAN-Ar 8179); Cocula [N18.23785°, W99.66058°], C. Bolívar and D. Peiaez, 6.ii.1943, 1♀ (AMNH); Iguala [N18.34485°, W99.53973°], J.C. Pallister, 2.vi.1946, 2♀ (AMNH IFM-1558); Taxco (N18.33°, W99.36°), W.J. Gertsch and W. Ivie, 3.v.1963, 1♂ (AMNH IFM-1662); [N18.55655°, W99.60512°], L. Isaacs, x.1945, 2♀ (AMNH IFM-1508); W.J. Gertsch and V. Roth, 28.vii.1956, 1♂ 2♀ 2 imm. (AMNH); [N18.5566°, W99.60513°], E.I. Schlinger, 29.iv.1953, 1♀ (AMNH); L. Isaacs, 1946, collected in fall, 2♂ 2 imm. (AMNH IFM-1649); V. Roth and W. Gertsch, 29.vii.1956, 1♂ 2♀ 1 imm. (AMNH); W.J. Gertsch and V. Roth, 28.vii.1956, 2♀ 1 imm. (AMNH). Morelos: 11 km S Amayuca [N18.72244°, W98.79494°, 1158m], E.S. Ross, 23.viii.1976, 1♀ (CAS 9060655); Cuernavaca   [N18.56°, W99.14°], viii.1957, 1♂ 1♀ (AMNH); [N18.92421°, W99.22157°], H. Field, ix.1941, both pedipalps missing, 1♂ (FMNH 2857653); [N18.92423°, W99.22142°], 1♀ (AMNH); N.L.H. Krauss, ix.1955, 1♀ (AMNH); x.1944, 1♀ (AMNH); W.J. Gertsch and V. Roth, 31.vii.1956, 1♀ 4 imm. (AMNH); Largo de Tegues (Tequesquitengo?) [N18.61138°, W99.25932°, 920m], H. Wagner, vi–vii.1944, 1♀ (AMNH); N of Cuernavaca   (N18.56°, W99.14°), W.J. Gertsch and W. Ivie, 6.v.1963, 1♂ 1♀ 5 imm. (AMNH), 4♀ 1 imm. (AMNH); Puente de Ixtla [N18.61373°, W99.32023°], Bolívar, Bonet and Osorio, 1.viii.1943, 1♀ (AMNH); Tepoztlán [N18.98487°, W99.09303°], Bolívar, Osorio and Velo, 10.v.1962, 1♀ (AMNH). Puebla: Acatlán [N18.20319°, W98.04981°], H. Wagner, 24–27. ix.1946, 2♀ 1 imm. (AMNH). Tlaxcala: Tlaxcala [N19.31392°, W98.24044°], V. Roth and W.J. Gertsch, 26.vii.1956, 1♂ (AMNH); [N19.31811°, W98.2375°], V. Roth and W. Gertsch, 26.vii.1956, 3♀ 10 imm. (AMNH).


United Kingdom, London, The Natural History Museum [formerly British Museum (Natural History)]














Kukulcania tractans (O. Pickard-Cambridge, 1896 )

Magalhaes, Ivan L. F. & Ramírez, Martín J. 2019

Kukulcania tractans:

Lehtinen 1967: 242

Filistata capillosa

O. Pickard-Cambridge 1899: 289

Filistata tractans

O. Pickard-Cambridge 1896: 183