Kukulcania mexicana, Magalhaes & Ramírez, 2019

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: 103-108

publication ID

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



persistent identifier


treatment provided by


scientific name

Kukulcania mexicana

sp. nov.

Kukulcania mexicana   , sp. nov.

Figures 4C View FIGURE 4 , 8N View FIGURE 8 , 31C View FIGURE 31 , 61–64 View FIGURE 61 View FIGURE 62 View FIGURE 63 View FIGURE 64

TYPE MATERIAL: HOLOTYPE: Querétaro: Piñal de Amoles , Campamento El Jabalí , 4 km E Bucarelli (N21.03381°, W99.5906°, 1646 m), 14.xi.2009, 1♂ ( CNAN-Ar DNA-0047). GoogleMaps   PARA-

TYPES: MEXICO. Distrito Federal: no further data [N19.43261°, W99.13321°], 1♂ (AMNH); Ciudad de México, M. Forman, 1♀ (CAS 9060647). Guanajuato: 10 miles E Guanajuato [N21.09547°, W101.13056°], C.E. Griswold & R.R. Jackson, 15.ix.1976, 1♀ (UCB). Hidalgo: 1 mile E Zimapán [N20.7386°, W99.38118°], J.A. Beatty, 24.vi.1963, 1♀ 1 imm. (AMNH); 2 miles SW Jacala (N20.59°, W99.13°), J. and W. Ivie, 18.viii.1964, 1♂ 1♀ 5 imm. (AMNH IFM-1651, IFM-1640); 3 km N Huautla (N20.71818°, W98.837°, 1625m), O. Francke et al., 28.iv.2006, 1♀ (CNAN-Ar 8185); 4 miles N of Tizayuca [N19.88271°, W98.94487°], E.S. Ross, 20.xi.1946, 1♀ (CAS 9057576); Cardonal, 2 km N Pinalito (N20.67133°, W99.1043°, 2301m), 16.x.2009, 1♀ (CNAN-Ar DNA-0043); El Tablón 7 miles SE Zimapan (N20.4°, W99.2°), J. and W. Ivie, 19. viii.1964, 1♂ 1♀ 2 imm. (AMNH IFM-1642).

REMARKS: W.J. Gertsch identified this species under the manuscript name “ Filistata azteca   .”

ETYMOLOGY: The name is an adjective in reference to Mexico, the only country where this species can be found.

DIAGNOSIS: Males are similar to those of K . brignolii   and K . santosi   in having incrassate, strong setae in the prolateral border of the cymbium. They differ in having a long embolus with two coils (short, uncoiled in K . brignolii   ) and by the simple apex of the incrassate setae in the cymbium (fig. 62) (spatulate in K . santosi   ). They also have much longer macrosetae in the ventral faces of femur I (fig. 61C). Females are similar to K . brignolii   in having long, curved sclerotized bars that do not taper posteriorly, and spermathecae that project anteriorly to the margin of the uterus externus. K . mexicana   might be distinguished by the larger glandular portion of the spermathecae apex which is placed ectally to the membranous portion (smaller, ventrally placed glandular portion in K . brignolii   ), and by the usually more bent sclerotized bars (fig. 64).

DESCRIPTION: Male holotype from Piñal de Amoles, Querétaro, Mexico (CNAN-DNA-Ara 0047). Coloration yellowish cream. Carapace very lightly stippled with light brown. Sternum yellowish light brown, with white markings. Abdomen dorsum grayish yellow. Clypeus short. Sternum oval, with two pairs of sigillae. Total length 7.39. Carapace length 3.37, width 2.84, clypeus length 0.19. Eye diameters and interdistances: AME‰.157; PME‰.208; ALE   ‰.24; PLE 0.23; AME–AME 0.053; PME–PME 0.207. Sternum length 1.56, width 1.57. Palp: femur length 4.14, height 0.5; tibia length 3.75, height 0.587. Leg I: femur (fe) 6.76; patella (pa) 1.58; tibia (ti) missing from tibia. II: fe 5.56; pa 1.41; missing from tibia. III: fe 5.07; pa 1.31; ti 4.34; mt 5.37; ta 3.23. IV: fe 6.55; pa 1.5; ti 6.3; mt 7.92; ta 4.26. Abdomen: length 4.03, width 1.72. Palp macrosetae long, in several rows along femur ventral face. Leg macrosetae (counts from tibia, metatarsus and tarsus I and II from specimen AMNH IFM-1651): fe I 6d, p11, 16v, 9r, all very long; ti I d3, 7p, 11v, 1r; mt I 3d, 64p, 16v, 1r; ta I 13v; fe II 5d, 6p, 12v, 7r; ti II 1d, 2p, 8v; mt II 3d, 9p, 12v, 2r; ta II 9v; fe III 6d, 3p, 12v, 2r; ti III 3d, 4p, 4v, 3r; mt III 4d, 5p, 10v, 4r; ta III 11v; fe IV 9d, 2p, 20v, 1r; ti IV 4d, 3p, 6v, 3r; mt IV 4d, 5p, 14v, 2r; ta IV 12v. Palp: cymbium long, with strong, incrassate setae on both prolateral and retrolateral faces; bulb short; sperm duct with at least three coils; embolus long, with two coils, thick at apex. State of the specimen: good, left palp dissected, both legs I missing from tibia, right leg II set apart for DNA extraction, right legs III and IV disarticulated from tibia.

Female paratype from Cardonal, Hidalgo, Mexico (CNAN-DNA-Ara‰043). Coloration very dark, reddish brown. Carapace brown, stippled on median area and lateral borders with dark brown. Sternum and first femora and tibiae hirsute, with long setae. Leg coxae and femora with longitudinal brown stripes. Anterior margin of the carapace unmodified. Sternum oval, with two pairs of sigillae. Total length 11.39. Carapace length 4.79, width 3.59, clypeus length 0.74. Eye diameters and interdistances: AME 0.138; PME 0.233; ALE   0.338; PLE‰.263; AME–AME‰.095; PME–PME 0.271. Sternum length 1.94, width 2.07. Palp: femur length 2.62, height 1.06; tibia length 1.57, height 0.89. Leg I: femur (fe) 5; patella (pa) 1.77; tibia (ti) 4.55; metatarsus (mt) 4.05; tarsus (ta) 2.21. II: fe 3.97; pa 1.59; ti 3.26; mt 3.18; ta 1.72. III: fe 3.34; pa 1.52; ti 2.72; mt 2.59; ta 1.46. IV: fe 4.48; pa 1.58; ti 3.82; mt 3.55; ta 1.66. Abdomen: length 7.1, width 4.74. Palp macrosetae on ventral surface of tibia and tarsus. Leg macrosetae present on ventral surfaces of tibiae, metatarsi, and tarsi; femora with one dorsal macroseta on basal third. Interpulmonary fold large, rounded, covering the spermathecae dorsally. Sclerotized lateral bars present, strong, curved, posteriorly blunt; membranous portion of the spermathecae apex subrounded; glandular portion positioned ectally to the membranous part. State of the specimen: good, genitalia dissected, right leg II set apart for DNA extraction.

INTRASPECIFIC VARIATION: Males (N = 4): total length 6.78–7.39 (7.07), carapace length 2.99–3.37 (3.16), femur I length 5.72–7.02 (6.59), tibia I length 5.31–7.62 (6.55), femur/ carapace ratio 1.84–2.35 (2.09). Females (N = 5): total length 7.4–14.06 (10.22), carapace length 3.41–6.16 (4.38), femur I length 3.67– 5.98 (4.44), tibia I length 3.52–5.2 (4.12), femur/ carapace ratio 0.96–1.13 (1.02). Most males have incrassate setae on both sides of the cymbium, while the male from Coahuila has them only on the prolateral side (fig. 62G–H); it also has fewer macrosetae on the legs than males in other populations and has both emboli broken; therefore we cannot dismiss the possibility that it could belong to another species. The shape of the female genitalia is variable, especially the sclerotized bars (fig. 64).

NATURAL HISTORY: Unknown; specimens in collections have no natural history data associated with their labels.

DISTRIBUTION: Central Mexico, with a doubtful record from Coahuila (see comment on intraspecific variation above) (fig. 4C).

ADDITIONAL MATERIAL EXAMINED: MEXICO. Coahuila: San Pedro [N25.75721°, W102.98386°], W.J. Gertsch, 20.viii.1947, 1♂ 1 imm. (AMNH IFM-1552). Distrito Federal: [N19.43261°, W99.13321°], D.L. Frizzell and H. Exline-Frizzell, ix.1943, 1♀ (MCZ 69198); R.H. Crandall, 28. xii.1940, 1♀ 1 imm. (AMNH); Cuicuilco [N19.37659°, W99.15098°], B. Malkin, 12. viii.1955, 1♀ (AMNH); San Angel [N19.34652°, W99.19129°], C.J. Goodnight, 13.viii.1946, missing spermathecae, 1♂ 1♀ 1 imm. (AMNH); San Jerónimo [N19.25067°, W99.09098°], J.C. and D.L. Pallister, 1.vii.1946, 1♀ (AMNH). Guanajuato: 0 .5 miles S of San Luis Potosí border, off highway 57 [N21.57421°, W100.75341°], W.D. Sissom, 24.viii.1984, 1♀ (AMNH); 36 km N San Luis de La Paz (N21.56944°, W100.75194°, 1870m), L. Prendini, O. Francke, E. Gonzaléz and J. Soriano, 27.vii.2002, 1♀ (AMNH). Hidalgo: 11 .7 miles S Metzquititlán, off Mex-105 [N20.43028°, W98.68444°], L.K. Erickson and M.E. Soleglad, 5.viii.1973, 1♀ (AMNH); 18 miles E Huichapán [N20.43332°, W99.41546°], W.D. Sissom, C. Myers and L. Born, 25.viii.1984, 1♀ (AMNH); 2 miles NE Tizayuca (N19.58°, W98.51°), W.J. Gertsch and W. Ivie, 22.iv.1963, 1♀ (AMNH IFM-1572); 5 miles N Zimapan [N20.80322°, W99.38503°], E.S. Ross, 21.xi.1946, 2♀ 1 imm. (AMNH IFM-1643); 5 miles S Zimapan [N20.6665°, W99.38063°], V. Roth and W. Gertsch, 20.vii.1956, with two egg sacs, 5♀ 6 imm. (AMNH IFM-1405); 5 miles SW Jacala [N20.57°, W99.14°], W.J. Gertsch and W. Ivie, 21.iv.1963, 1♀ (AMNH); Jacala (N21.01°, W99.12°), 20.iv.1963, 2♀ 1 imm. (AMNH); Tax - quillo (Tzindejeh), Río Tula (N20.33°, W99.19°), J. and W. Ivie, 20.viii.1964, 1♀ (AMNH); Tlalpam [N19.29154°, W99.1719°], H. Wagner, 20.vii.1947, 1♀ 3 imm. (AMNH). Oaxaca: 8 miles N Miahuatlán [N16.40419°, W96.66479°], C.M. Bogert, 5. ix.1962, 1♂ (AMNH IFM-1591). Querétaro: Querétaro [N20.58879°, W100.38989°], S.A. Minton, 1♀ (AMNH). Tlaxcala: 8 miles W Capulalpán [N19.56362°, W98.68331°], S.C. Williams and C.L. Mullinex, 30.x.1973, 7♀ 2 imm. (CAS 9060657); La Venta [N19.56315°, W98.68402°], 11.ii.1939, caught in the middle of an imaginal molt, 1♀ 2 imm. (AMNH).