Cryptachaea migrans ( Keyserling, 1884 )

Santanna, Manoela, Rodrigues, Everton Nei Lopes, Cizauskas, Igor & Brescovit, Antonio Domingos, 2019, On the spider genus Cryptachaea from Peru, Bolivia and cave environments in Brazil: a new species, additional descriptions and new records (Araneae, Theridiidae), Zootaxa 4646 (2), pp. 271-292: 280-284

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Cryptachaea migrans ( Keyserling, 1884 )


Cryptachaea migrans ( Keyserling, 1884) 

Figs. 15–19View FIGURES 15–19, 26–31View FIGURES 26–31, 33View FIGURE 33

Theridium migrans Keyserling, 1884: 18  , pl. 1, fig. 6, female lectotype from Lechugal, Tumbes, Peru, in the Polish Academy of Sciences, Warsaw, examined.

Tidarren fordum luctuosum Caporiacco, 1954: 77  , female holotype from St. Jean du Maroni, French Guiana, in the Muséum National d’Histoire Naturelle, Paris, (synonymized by Levi, 1963: 225).

Achaearanea migrans: Levi, 1963: 225  (transferred from Theridion  ).

Cryptachaea migrans: Yoshida, 2008: 39  (transferred from Achaearanea  ).

Achaearanea uviana Levi, 1963: 218  , fig. 44, male holotype from Utcuyacu, Junín, 1600–2200m elev., Peru, 4 April 1948, F. Woytkowski leg., in the American Museum of Natural History, examined. New Synonymy.

Cryptachaea uviana: Yoshida, 2008: 39  (transferred from Achaearanea  ).

Note. Keyserling (1884) described Cryptachaea migrans  based on the female from Peru and Levi (1963) described Cryptachaea uviana  based on the male from Peru too. From the examination of the types, the drawings by Levi (1963) and the examination of some males and females collected together in many localities in Brazil (Volta Redonda, state of Rio de Janeiro, in Canaã dos Carajás, state of Pará and Antonina  , state of Paraná), and Bolivia (Beni) and male and female have the same color pattern, made it clear that these names are synonyms. Here we present for the first time SEM images of the male palp ( Figs. 26–30View FIGURES 26–31) and of the epigynum ( Fig. 31View FIGURES 26–31) of this species, illustrations of the male and female ( Figs. 15–17View FIGURES 15–19), and photos of the both sexes ( Figs. 18, 19View FIGURES 15–19).

Diagnosis. The male palpus of Cryptachaea migrans  resembles that of Cryptachaea altiventer ( Keyserling, 1884)  (see Levi, 1963: fig. 45), by the shape of cymbium, with projected apex and conductor which follows the path of the embolus to the apex ( Figs. 15View FIGURES 15–19, 26–29View FIGURES 26–31), but differs by the curved embolus and slender conductor, apex of the cymbium elongated, hood-shaped (hat) ( Fig. 15View FIGURES 15–19, 26–29View FIGURES 26–31). The epigynum has a pair of oval spermathecae ( Fig. 17View FIGURES 15–19), two copulatory openings located in the medial region of the epigynal plate ( Fig. 16View FIGURES 15–19) and copulatory ducts forming a loop ( Fig. 17View FIGURES 15–19) as in Cryptachaea anastema ( Levi, 1963)  (see, Levi, 1963: fig. 57,58), but differs by having the copulatory ducts longer and fertilizations ducts longer, forming a loop ( Fig. 17View FIGURES 15–19).

Description. Male ( IBSP 174281): Total length 1.36. Carapace: length 0.64, width 0.51. Clypeus height: 0.13. Sternum: length 0.40, width 0.37. Chelicerae: length 0.17, width 0.06. Abdomen: length: 0.71, width 0.51, height 0.61. Leg formula IV/II/I/III. Segment length (I/II/III/IV): femora 0.85/0.51/0.40/0.64; patellae+tibiae 0.78/0.54/0.37/0.54; metatarsi+tarsi-/0.71/0.37/0.71; total: 1.63/1.77/1.15/1.90. Palp: femora 0.03, patellae 0.06, tibiae 0.03, cymbium 0.37. AME are the largest. Eyes with dark borders ( Fig. 18View FIGURES 15–19). Carapace oval, dark brown with dark borders ( Fig. 18View FIGURES 15–19). Clypeus brown, laterally concave. Chelicerae yellow with brown spots. Labium yellow, subquadrangular. Endites yellow, subquadrangular. Sternum brown. Legs grayish brown, except femora yellow. Abdomen oval ( Fig. 18View FIGURES 15–19), black with a white stripe going down on each side and a pair of white spots side by side on venter, ventrally brown. Spinnerets yellow. The male palpus have the cymbium long, expanded at its tip ( Figs. 15View FIGURES 15–19, 26–29View FIGURES 26–31), tarsal organ developed ( Fig. 30View FIGURES 26–31), conductor with laminar shape and pointed distal end ( Figs. 15View FIGURES 15–19, 26–28View FIGURES 26–31), embolus with strong base ( Figs. 15View FIGURES 15–19, 26, 27View FIGURES 26–31) and the tegulum subcircular and larger ( Figs. 15View FIGURES 15–19, 26–28View FIGURES 26–31), with light sinuous ducts ( Fig. 15View FIGURES 15–19). Cymbium with many long macrosetae ( Figs. 26–30View FIGURES 26–31).

Female ( IBSP 174282). Total length 3.84. Carapace: length 1.49, width 1.22. Clypeus height: 0.23. Sternum: length 0.81, width 0.78. Chelicerae: length 0.44, width 0.17. Abdomen: length: 2.17, width 1.87, height 1.80. Leg formula I/IV/II/III. Segment length (I/II/III/IV): femora 1.84/1.56/1.15/1.87; patellae+tibiae 2.41/1.42/1.02/1.66; metatarsi+tarsi 2.89/1.80/1.36/2.14; total: 7.15/4.79/3.53/5.67. Palp: femora 0.27, patellae 0.17, tibiae 0.20, tarsi 0.37. All eyes with the same size. Carapace, clypeus, chelicerae, labium, endites and sternum as in male. Legs yellow, except distally brown ( Fig. 19View FIGURES 15–19). Femur I presence of a comb of bristles distributed serially in ventral view. Abdomen oval ( Fig. 19View FIGURES 15–19), dark brown with white stripes on dorsum, ventrally brown with a white spot on the venter. Epigynum ( Fig. 16, 17View FIGURES 15–19, 31View FIGURES 26–31) with spermathecae oval, copulatory ducts non-sinuous ( Fig. 17View FIGURES 15–19), and curved fertilization ducts ( Fig. 17View FIGURES 15–19).

Variation. The color pattern is quite variable in both sexes from dark brown to brown in carapace. The white spots in the abdomen can be further dispersed. The legs may be lighter, light yellow to brown. Males (n=5): Total length 1.15–1.36. Carapace: length 0.61–0.64, width 0.47–0.51. Femur leg I 0.85–0.91. Females (n= 8): Total length 3.29–4.11. Carapace: length 1.32–1.49, width 1.15–1.22. Femur leg I 1.84–2.55.

Distribution. Venezuela, British Guiana, French Guiana, Brazil (states of Amazonas, Pará, Alagoas, Espírito Santo, and Paraná), Peru and Bolivia ( Fig. 33View FIGURE 33).

Material examined. Epigean material: PERU: Madre de Dios, Zona Reservada Tambopata (12°55'57''S; 69°16'50''W), 1M, D. Silva coll., 19.V.1988 ( MCN 17802View Materials); BOLÍVIA: Beni, Beni Biological Station (14°38'34''S; 66°17'54''W), 1 M, H. Höfer & A. D. Brescovit coll., 27–29.VII.1997 ( MCN 24676View Materials)GoogleMaps  , 1M ( MCN 24686View Materials)  ; BRAZIL: Amazonas, Manaus, Fazenda Esteio Km 41 (2°54'1''S; 60°7'7'W'), 1 F, A. D. Brescovit coll., I.1994 ( MCN 25133View Materials)  ; Cave material: Pará, Parauapebas, FLONA de Carajás , Cave N4E_0089 (GEM-1562) (6°1'59''S; 50°9'6''W), 1M, 24–30.VII.2009 ( IBSP 175378View Materials)GoogleMaps  ; Cave S11D_0059 (705) (6°24'27702''S; 50°18'46''W), 1F, 01–14.VII.2010 ( IBSP 174297View Materials)  ; Cave S11D_0074 (720) (6°23'33576''S; 50°19'7''W), 1F, 13–30.I.2010 ( IBSP 175825View Materials)  ; Cave S11_0008 (S11-08) (6°25'14304''S; 50°17'12''W), 1F, 03–19.VIII.2010 ( IBSP 175865View Materials)  ; Cave S11_0022 (S11-22) (6°25'3''S; 50°18'7''W), 1F, 03–19.VIII.2010 ( IBSP 175867View Materials)GoogleMaps  ; Cave S11_0023 (S11-23) (6°25'24''S; 50°18'0''W), 1F, 24.II–04.III.2010 ( IBSP 174278View Materials)GoogleMaps  ; Cave S11_0025 (S11-25) (6°25'19''S; 50°18'20''W), 1F, 24.II–04.III.2010 ( IBSP 175836View Materials)GoogleMaps  , 1M, 03–19.VIII.2010 ( IBSP 174279View Materials)  ; Cave CAV_0025 (CAV-25) (6°24'56''S; 50°21'40''W), 1F, 22–31.V.2010 ( IBSP 175847View Materials)GoogleMaps  ; Cave CAV_0028 (CAV-28) (6°24'32”S; 50°22'9''W), 1F, 22–31.V.2010 ( IBSP 175849View Materials)GoogleMaps  ; Cave CAV_0032 (CAV-32) (6°25'36''S; 50°19'26''W), 1F, 22–31.V.2010 ( IBSP 175850View Materials)GoogleMaps  ; Cave CAV_0009 ( CAV _09) (6°25'21''S; 50°19'32''W), 1F, 22–28.IX.2010 ( IBSP 175857View Materials)GoogleMaps  all collected by R. Andrade & I. Cizauskas et al.; Serra da Bocaina, Cave  SB_0011 (GEM-1431) (6°17'7''S; 49°55'35''W), 1F, 29.VIII–27.IX.2012 ( IBSP 183367View Materials)GoogleMaps  ; Cave SB_0021 (GEM-1441) (6°19'29''S; 49°58'24''W), 1F, 01.IV.2011 ( IBSP 183365View Materials)GoogleMaps  ; Cave SB_0090 (GEM-1506) (6°18'38''S; 49°54'40''W), 1F, 10–31.I.2013 ( IBSP 183368View Materials)GoogleMaps  ; Cave SB_0094 (GEM-1510) (6°18'1''S; 49°57'9''W), 1F, 29.VIII–27.IX.2012 ( IBSP 174280View Materials)GoogleMaps  ; Cave SB_0109 (6°21192'0''S; 49°58'35''W), 1M, 10–31.I.2013 ( IBSP 174281View Materials)  ; Cave SB_0112 (GEM-1525) (6°21'11''S; 49°58'35''W), 1F, 20–26.VI.2013 ( IBSP 183577View Materials)GoogleMaps  ; Cave SB_0114 (GEM-1527) (6°21'10''S; 49°58'37''W), 2F, 20–26.VI.2013 ( IBSP 174282View Materials)GoogleMaps  , 2F, 10–31.I.2013 ( IBSP 183371View Materials)  , 1F ( IBSP 183372View Materials)  ; Cave SB_0115 (GEM-1528) (6°21'12''S; 49°58'37''W), 1F, 20.IX–01.X.2011 ( IBSP 183366View Materials)GoogleMaps  ; Cave SB_0119 (GEM-1539) (6°21'12''S; 49°58'43''W), 1F, 10–31.I.2013 ( IBSP 183370View Materials)GoogleMaps  ; Cave SB_0124 (GEM-1592) (6°21'15''S; 49°59'8''W), 2F, 10–31.I.2013 ( IBSP 183369View Materials)GoogleMaps  ; Cave SB_0170 (6°18'36''S; 50°0'10''W), 1F, 08–22.V.2013 ( IBSP 183573View Materials)GoogleMaps  , 1M, 10–20.IX.2013 ( IBSP 174283View Materials)  ; Cave SB_0185 (6°20'39156''S; 49°58'15''W), 1F, 08–22.V.2013 ( IBSP 183574View Materials)  , 1M ( IBSP 183575View Materials)  ; Cave SB_0220 (6°18'3''S; 49°57'56''W), 1F, 08–22.V.2013 ( IBSP 183576View Materials)GoogleMaps  ; Cave SB_0231 (6°20'31''S; 49°59'43''W), 1M, 13–23.II.2014 ( IBSP 183579View Materials)GoogleMaps  ; Cave SB_0234 (6°20'27''S; 49°54'17''W), 1M, 12–22.X.2013 ( IBSP 183578View Materials)GoogleMaps  all collected by C. A. R. Souza & J. Mascarenhas et al. coll.; Alagoas, Murici, Estação Ecológica de Murici (9°15'S; 35°51''W), 1M, Equipe Biota coll., 13–22.IX.2003 ( MCN 43784View Materials)  ; Rio de Janeiro, Rio de Janeiro, Floresta da Cicuta (2°12'S; 43°16'W), 1M, Equipe Biota coll., 11–18.VI.2001 ( MCN 42346View Materials)GoogleMaps  , 1M ( MCN 42381View Materials)  , 1M ( MCN 42382View Materials)  ; Paraná, Antonina, Reserva  Natural do Rio Cachoeira (25°25'53''S; 48°44'39''W), 1M, 2 F, E. Alvares coll., 23.IX.2005 ( MCN 45899View Materials)GoogleMaps  .


Instituto Biologico de Sao Paulo


McNeese State University














Cryptachaea migrans ( Keyserling, 1884 )

Santanna, Manoela, Rodrigues, Everton Nei Lopes, Cizauskas, Igor & Brescovit, Antonio Domingos 2019

Theridium migrans

Keyserling, E. 1884: 280