Heteroctenus bonettii ( Armas, 1999 ),

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: 31-35

publication ID

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

publication LSID

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

persistent identifier

http://treatment.plazi.org/id/8F65ED57-FFD5-B177-3813-CE46B2E66B15

treatment provided by

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scientific name

Heteroctenus bonettii ( Armas, 1999 )
status

comb. nov.

Heteroctenus bonettii ( Armas, 1999)  , comb. nov.

Figures 4View FIG, 11View FIG. 11 BView FIG, 14View FIG. 14 BView FIG, 18View FIG. 18 BView FIG, 23View FIG. 23 E –GView FIG, 25View FIG. 25 BView FIG, 26View FIG. 26 BView FIG, 28View FIG. 28 BView FIG, 29View FIG. 29 BView FIG, 30View FIG. 30 BView FIG, 32View FIG

Rhopalurus bonettii Armas, 1999: 126–129  , fig. 12A –B, table 1; 2006: 6, 10, fig. 8A –D;

Kamenz and Prendini, 2008: 9, table 2, pl. 40; Perez-Gelabert, 2008: 68; Prendini et al., 2009: 206, 207, 209, 211–213, 215, 218, 220, 222, 223, figs. 1, 3, 5C, D, 6B, 7B, 9, table 2; Teruel and Armas, 2012b: 216, fig. 7; Santos et al., 2016: 9, 16, fig. 2A.

Rhopalurus bonettii Armas, 1999: 126–129  , fig. 12A –B, table 1; 2006: 6, 10, fig. 8A –D;

Kamenz and Prendini, 2008: 9, table 2, pl. 40; Perez-Gelabert, 2008: 68; Prendini et al., 2009: 206, 207, 209, 211–213, 215, 218, 220, 222, 223, figs. 1, 3, 5C, D, 6B, 7B, 9, table 2; Teruel and Armas, 2012b: 216, fig. 7; Santos et al., 2016: 9, 16, fig. 2A.

TYPE MATERIAL: Rhopalurus bonettii  : Holotype ♂ (IES, IZACC-3.2908), DOMINICAN REPUBLIC: Pedernales Prov.: Beata Island (NW), Playa del Coco , 10.iii.1999, L.F. de Armas and K. Polanco. 

DIAGNOSIS: Heteroctenus bonettii  differs from the other two species of Heteroctenus  occurring on Hispaniola, H. abudi  and H. princeps  , in the lesspronounced sexual dimorphism of the pedipalp chelae. The chelae of the male and female of H. bonettii  are similar, the manus of the male only slightly incrassate relative to the female, and the fingers not curved proximally, such that the fingers connect along most of their length and little to no gap is present between them proximally, when closed (figs. 25, 26).

Other characters by which H. bonettii  differs from H. abudi  and H. princeps  are as follows. The carapace of H. bonettii  is longer and narrower than that of H. princeps  (fig. 14B, E). The carapace and tergites are more finely and sparsely granular in H. bonettii  than in H. abudi  and H. princeps  . The pectines of H. bonettii  are very broad basally, with a more pronounced basal plate than in H. princeps  and, to a lesser extent, H. abudi  . The first 6–7 pectinal teeth are noticeably larger than the rest in H. bonettii  , unlike H. abudi  and H. princeps  in which the teeth are similar in size (fig. 18B). The submedian sulci of sternite III are subparallel in H. bonettii  but convergent in H. abudi  and H. princeps  (fig. 18A, B, E). The pale, raised posteromedial surface of sternite V in the male is more prominent in H. bonettii  than in H. abudi  and H. princeps  . The metasomal segments of H. bonettii  are longer and narrower, i.e., the width/length ratio is greater, than in H. princeps  and, to a lesser extent, H. abudi  (fig. 28A, B, E). The granulation, ventromedian and ventrolateral carinae of metasomal segment V are more developed, compared with those of the preceding segments, such that the segment has a matte, angular appearance in H. bonettii  (fig. 19B).

Unlike H. abudi  , the coloration of H. bonettii  is predominantly pale (fig. 32); the carapace, pedipalp chelae, legs, and tergites immaculate; the metasoma (segments III –V or IV and V only) and telson weakly infuscate. In this respect, H. bonettii  resembles H. princeps  except for the pedipalp chelae, which are typically infuscate in the latter.

DISTRIBUTION: Heteroctenus bonettii  is endemic to Pedernales Province south of the Sierra de Baoruco in the western part of mainland Dominican Republic and Isla Beata, the type locality (fig. 4A). Most of the known locality records fall within the Parque Nacional Jaragua, at altitudes ranging from 14 to 92 m.

ECOLOGY: Heteroctenus bonettii  is restricted to deciduous spiny forest and thorn scrub with cacti on karst limestone ( Prendini et al., 2009). Scorpions were commonly found sheltering between slabs of rock (though never under bark or wood) by day, and with UV light detection at night. The habitat and habitus are consistent with the lapidicolous ecomorphotype ( Prendini, 2001b). Heteroctonus bonettii  was sympatric with the buthids Centruroides alayoni  , C. jaragua  , C. lucidus  , Microtityus iviei Armas, 1999  , and Microtityus lantiguai Armas and Marcano Fondeur, 1992  , and the diplocentrid Heteronebo oviedo ( Armas, 1999)  .

MATERIAL EXAMINED: DOMINICAN REPUB- LIC: Pedernales Prov. : Parque Nacional Jaragua: Cabo Rojo, 17°53′45.2″N 71°39′35.8″W, 15 m, 9.vii.2004, E.S. Volschenk and J. Huff, dry cactus and spiny forest on limestone karst, hand collected from under stones, and with blacklightsGoogleMaps  , 5 ♂, 11 ♀, 5 subad., 2 juv. (AMNH), 1 juv. ♂ (AMCC [LP 3267]); road to Cabo Rojo, 0.6 km S of DR 44, 17°58.201′N 71°39.036′W, 14 m, 7.vii.2010, J. Huff and S. Schoenbrun, karst limestoneGoogleMaps  , 1 ♂, 1 ♀, 1 subad. ♂ (AMNH), 1 subad. ♂ (AMCC [LP 10524]); road to Fondo Paradi, 1.8 km from Highway 44, 17°48.692′N 71°26.600′W, 302 ft, 12.i.2004, J. Huff, found between rocksGoogleMaps  , 2 ♀ (AMCC [LP 2471, 3265]); unmarked track into park between Manuel Goya and Oviedo, 17°48′41.5″N 71°26′35.9″W, 83.3 m, 9.vii.2004, E.S. Volschenk and J. Huff, deciduous forest and thorny scrub, hand collected from under stones and with blacklightsGoogleMaps  , 15 ♂, 8 ♀, 1 subad., 1 juv. (AMNH), 1 juv. [pedipalps] (AMCC [LP 3266])  .

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Scorpiones

Family

Buthidae

Genus

Heteroctenus

Loc

Heteroctenus bonettii ( Armas, 1999 )

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

Rhopalurus bonettii

Armas, L. F. de 1999: 126
Loc

Rhopalurus bonettii

Armas, L. F. de 1999: 126