Physoctonus debilis (C.L. Koch, 1840 ),

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 Spec, Bulletin of the American Museum of Natural History 415, pp. 1-134: 93

publication ID

http://doi.org/ 10.1206/0003-0090-415.1.1

publication LSID

lsid:zoobank.org:pub:146A0539-0A2C-44CD-986C-8F8A8EB4598C

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scientific name

Physoctonus debilis (C.L. Koch, 1840 )
status

 

Physoctonus debilis (C.L. Koch, 1840) 

Figures 1View FIG. 1 EView FIG, 2DView FIG, 9BView FIG, 10DView FIG, 11GView FIG, 12FView FIG, 16AView FIG, 20AView FIG, 21GView FIG, 22GView FIG, 24S –UView FIG, 48A, BView FIG, 49–51View FIGView FIGView FIG; table 3

Vaejovis debilis C.L. Koch, 1840: 21  , 22, pl. CCLIX, fig. 605; 1850: 89; Kraepelin, 1899: 96.

Waejovis debilis  : Gervais, 1844 b: 458.

Rhopalurus debilis: Borelli, 1910: 5–8  , fig. 1; Mello-Campos, 1924 a: 252, 275, 276, 277; 1924b: 318, 341, 342, 343; Mello-Leitão, 1932: 14, 30; Meise, 1934: 42; Prado, 1940: 26, 29–30; Mello-Leitão, 1945: 266, 272, 273; Bücherl, 1959: 268; 1971: 327; Francke, 1977 a: 127–134, figs. 1–15; Lourenço, 1982 a: 133, 136, fig. 78; 1986a: 133, figs. 12, 16; 1986b: 165, fig. 7; 1990: 161; 1992: 55; Kovařík, 1998: 118; Fet and Lowe, 2000: 219; Ubinski et al., 2016: 122.

Physoctonus physurus Mello-Leitão, 1934 b: 76  , 77, figs. 1–7 (synonymized by Francke, 1977 a: 127); 1942: 129; 1945: 129–132, figs. 40, 41; Bücherl, 1967: 115; 1969: 768; Stahnke, 1974: 129.

Physoctonus debilis: Lourenço, 2007: 360  , figs. 4–5, 14–25View FIG. 14View FIG. 15View FIG. 16View FIG. 17View FIG. 18View FIG. 19View FIG. 20View FIG. 21View FIG. 22View FIG. 23View FIG. 24View FIG. 25; Prendini et al., 2009: 222; Brazil and Porto, 2010: 50; Porto et al., 2010: 293, 295, fig. 1F, table 1.

TYPE MATERIAL: BRAZIL: Vaejovis debilis  : Holotype?♀ (ZSM) [lost]. Physoctonus physurus  : Holotype ♂ (MNRJ), Paraíba: Santa Luzia.

DIAGNOSIS: Physoctonus debilis  differs from its sister species, P. striatus  , sp. nov., as follows. The mesosomal tergites of P. debilis  are uniformly pale, except for the infuscate dorsomedian carinae, which form a thin stripe longitudinally, whereas the tergites of P. stria  - tus are darker, with transverse bands of infuscation. The intercarinal surfaces of the carapace and metasomal segments II –IV are more coarsely and densely granular in P. debilis  but weakly granular to smooth in P. striatus  . The carinae of the carapace, pedipalps, and metasoma are more pronounced in P. debilis  than in P. striatus  : for example, the lateral inframedian carinae of metasomal segments II and III are complete in P. debilis  but restricted to the posterior third of the segment in P. stria  - tus; and the retromedian and secondary accessory carinae of the pedipalp chela manus are complete and granular in P. debilis  but vestigial or absent in P. striatus  . Pedipalp chela fixed finger trichobothrium db is situated distal to trichobothrium et in P. debilis  but aligned with et in P. striatus  .

DISTRIBUTION: Physoctonus debilis  is endemic to Brazil, where it has been recorded in the states of Ceará, Paraíba, Pernambuco, and Piauí (fig. 9B).

ECOLOGY: The known locality records are situated in the Brazilian caatinga (fig. 2D). Specimens collected by the authors were found under stones during the day or with UV light detection at night. The habitus is consistent with the lapidicolous ecomorphotype ( Prendini, 2001 b).

REMARKS: Physoctonus debilis  was originally placed in the nonbuthid genus Vaejovis C.L. Koch, 1836  , but was transferred to Rhopalurus  by Borelli (1910), where it remained until Lourenço (2002) revalidated the genus Physoctonus  . As noted by Fet and Lowe (2000), the true date of publication of C.L. Koch’s name is 1840 (see Brignoli, 1985), not 1841 as commonly quoted. This species has a junior homonym, Vaejovis debilis L. Koch, 1865  , from Mexico, the identity of which is unknown.

MATERIAL EXAMINED: BRAZIL: Pernambuco: Exu, 18 km N, 5.iii.1977, L.J. Vitt, under leaf of granite on boulder, caatinga habitat, 1 ♀ (AMNH); Exu, 5 km N, 4.x.1977, L.J. Vitt, 1 ♀ (AMNH), 18.i.1978, L.J. Vitt and K.E. Streilein, 1 ♀ (AMNH); Fazenda Batente, 13 km E Exu, 10.xi.1977, L.J. Vitt and K.E. Streilein, 1 ♀ (AMNH); Fazenda Caterino, 10 km NE Exu, 9.vii.1977, L.J. Vitt, 1 ♀ (AMNH), 25.ix.1977, L.J. Vitt, 1 ♀ (AMNH). Piauí: Castelo do Piauí, 05°13′43″S 41°41′57″W, 13.viii.2008, R. Pinto-da-Rocha et al., 2 ♀ (MZSP 30868/AMCC [LP 9680]), MZSP 31158/AMCC [LP 9931]); Oeiras, 06°58′28″S 42°06′31″W, 2–3. vi.2008, H.Y. Yamaguti et al., 1 ♀ (MZSP 31162/ AMCC [LP 9940]), 1 subad. ♀ (MZSP 31164/ AMCC [LP 9962]), 3.vi.2008, H.Y. Yamaguti et al., 1 ♀ (MZSP 30866/AMCC [LP 9678]); near Parque Nacional Sete Cidades, Brasileira e Piracuruca, 04°10′0 2″S 41°41′56.7″W, 16.viii.2008, R. Pinto-da- Rocha and L.S. Carvalho, 1 ♀ (MZSP 30867/ AMCC [LP 9679]).

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Scorpiones

Family

Buthidae

Genus

Physoctonus

Loc

Physoctonus debilis (C.L. Koch, 1840 )

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

Physoctonus debilis: Lourenço, 2007: 360

: Lourenco 2007: 360
2007
Loc

Physoctonus physurus Mello-Leitão, 1934 b: 76

Mello-Leitao 1934: 76
1934
Loc

Rhopalurus debilis

: Borelli 1910: 5
1910
Loc

Waejovis debilis

: Gervais 1844: 458
1844
Loc

Vaejovis debilis C.L. Koch, 1840: 21

C. L. Koch 1840: 21
1840