Ischnotelson guanambiensis, Lauren A. Esposito & Humberto Y. Yamaguti & Cláudio A. Souza & Ricardo Pinto-Da-Rocha & Lorenzo Prendini, 2017

Lauren A. Esposito, Humberto Y. Yamaguti, Cláudio A. Souza, Ricardo Pinto-Da-Rocha & Lorenzo Prendini, 2017, Systematic Revision of the Neotropical Club-Tailed Scorpions, Physoctonus, Rhopalurus, and Troglorhopalurus, Revalidation of Heteroctenus, and Descriptions of Two New Genera and Three New Species (Buthidae: Rhopalurusinae), Bulletin of the American Museum of Natural History 415, pp. 1-134: 65-68

publication ID 10.1206/0003-0090-415.1.1

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Ischnotelson guanambiensis


Ischnotelson guanambiensis  ( Lenarducci, Pinto-da-Rocha and Lucas, 2005), comb. nov.

Figures 1View FIG. 1 BView FIG, 2CView FIG,View FIG 9AView FIG, 10AView FIG, 12EView FIG, 15AView FIG, 19AView FIG, 21CView FIG, 22CView FIG, 23O–RView FIG, 36AView FIG, BView FIG, 37AView FIG, CView FIG, 38AView FIG, 39View FIG

Rhopalurus guanambiensis: Lenarducci et al., 2005: 1  , 2, 7, tables 1, 2, figs. 1–11; Lourenço, 2008: 3; Prendini et al., 2009: 222; Brazil and Porto, 2010: 50; Porto et al., 2010: 293, 295, table 1; Lourenço, 2014: 69; Ubinski et al., 2016: 122.

TYPE MATERIAL: Rhopalurus guanambiensis  : Holotype ♂ (IBSP-SC 3404), 3 ♂ paratypes (IBSP-SC 3406-3407, MZSP-22590), paratype ♀ (IBSP-SC 3405), BRAZIL: Bahía: Guanambí , 14°11′15″S 42°48′45″W, 1985, V.F. Neves.GoogleMaps 

DIAGNOSIS: Ischnotelson guanambiensis  differs from its sister species, I. peruassu  , sp. nov., as follows. Ischnotelson guanambiensis  is smaller, varying from 35–45 mm in total length, than I. peruassu  , which varies from 48–59 mm. Metasomal segments IV, V, and telson are darker in I. guanambiensis  than in I. peruassu  . The pedipalp chela fingers are noticeably darker than the chela manus in I. guanambiensis  , but similar in color to the manus in I. peruassu  . The pedipalps and legs are covered by fine setae in I. guanambiensis  , but sparsely setose in I. peruassu  . The granulation of the carapace of I. guanambiensis  is coarser than that of I. peruassu  , and the dorsal intercarinal surfaces of the metasoma are shagreened in I. guanambiensis  , but smooth in I. peruassu  . The carinae of the carapace are more pronounced in I. guanambiensis  than in I. peruassu  . Sternite III is elevated anteriorly in I. guanambiensis  unlike in I. peruassu  (fig. 10A). Finally, the sexual dimorphism of the adult male I. guanambiensis  is more pronounced than that of the adult male I. peruassu  : the pedipalps are more incrassate, the fixed and movable fingers of the pedipalp chela are markedly curved proximally and the posterior broadening of the metasoma is more pronounced in the former.

DISTRIBUTION: Ischnotelson guanambiensis  is endemic to the Brazilian state of Bahía, and known only from the type locality, near the city of Guanambí.

ECOLOGY: The type and only known locality is situated on the ecotone of Brazilian caatinga and cerrado (fig. 2C). Personally collected specimens were found at night with UV light detection. The habitat and habitus are consistent with the lapidicolous ecomorphotype ( Prendini, 2001b).

MATERIAL EXAMINED: BRAZIL: Bahía: Município Ceraíma: Aeroporto de Guanambí, Guanambí , 14°13′0 0″S 42°46′60″W, 15.viii.2007, H.Y. Yamaguti et al., 1 ♀ (MZSP 70872), 17. xii.2007, H.Y. Yamaguti et al., 1 subad. ♀ (MZSP 30864/AMCC [LP 9669]), 1 subad. ♂ (MZSP 30865/AMCC [LP 9670]), 21.i.2009, H.Y. Yamaguti et al., 1 ♂ (MZSP 70873)  .














Ischnotelson guanambiensis

Lauren A. Esposito, Humberto Y. Yamaguti, Cláudio A. Souza, Ricardo Pinto-Da-Rocha & Lorenzo Prendini 2017

Rhopalurus guanambiensis:

Ubinski, C. & L. S. Carvalho & M. C. Schneider 2016: 122
Lourenco, W. R. 2014: 69
Brazil, T. K. & Porto, T. J. 2010: 50
Brazil, T. K. & Porto, T. J. 2010: 293
Prendini, L. & L. A. Esposito & J. Huff & E. S. Volschenk 2009: 222
Lourenco 2008: 3
Lenarducci, A. R. & R. Pinto-da-Rocha & S. M. Lucas 2005: 1