Paruroctonus arnaudi Williams 1972
Williams, 1972: 4-5, 8, fig. 1; Soleglad, 1973b: 355; Williams,
1980: 32, 34, fig. 38, 39; ►Haradon, 1985: 24, 40; Kovarík, 1998: 143;
Beutelspacher, 2000: 66, 136, 152, map 32; Sissom, 2000:506; Soleglad &
Fet, 2003b: 6; Soleglad & Fet, 2003a: 8.
holotype (male), CAS (Type
No. 11334), Socorro Sand Dunes, Baja California Norte, Mexico, 12-VII-1969 (S. C. Williams, V. F. Lee).
Haradon (1985) referred this species to the boreus
microgroup in the boreus infragroup of the genus Paruroctonus (then
recognized as the nominate subgenus of a more broadly
circumscribed genus Paruroctonus that included what is now
recognized as the genus Smeringerus Haradon). In a partial key to the
members of the subgenus, he ascribed the following attributes to this
"Cheliceral fixed digit inferior carina extends
proximally at least to level of bicusp; carapace length/cheliceral fixed
digit length ratio 4 .2 or more; Pectinal teeth 24/24 or more in males
and 17/18 or more in females and 37 or more primary denticles (less
proximal row) on pedipalp movable fingers, or if fewer pectinal teeth
then either (1) dorsal metasomal setae I-IV 0,0,0,1, or (2) no mrs seta
on basitarsus II boreus infragroup; Basitarsus II with mrs seta;
Carapace length/cheliceral fixed digit length ratio 7.0 or more boreus
microgroup; Metasomal setae: ventrals I-IV 3,4,4,5 ; ventrolaterals 4 on
IV and 7 on V; Pedipalp fingers in adult male deeply scalloped
proximally, in adult female weakly scalloped."
"Diagnosis. - Basic color of cuticle goldenyellow
with distinctive dusky to dark marbling on carapace and mesosomal dorsum;
ventral keels of metasoma usually with dusky outline; pedipalp finger same
color as palm; pedipalp palms swollen, strongly granular keels; pedipalp fingers moderately scalloped, male with distinctive open proximal space when fingers closed; pectine teeth 21-25 in females. 26-31 in males; space between ventromedian keels of metasoma without abundant, stout, reddish setae, segment
III with fewer than 10 such setae; pedipalps with fixed finger equal to or shorter than palm in length.
Similar to P. grandis and P. silvestrii. Distinguished from
P. grandis as follows: metasomal segments not as elongate; with dusky outlining of ventral metasomal keels; pedipalp fingers of male more deeply scalloped and with larger open proximal space when fingers closed; space between ventromedian metasomal keels not hirsute. Distinguished from
P. silvestrii as follows: males with distinctive proximal space when pedipalp fingers closed; pedipalp palm ventrally not conspicuously granular; not as darkly marked."
AMERICA. México (northwestern coast of
Baja California Norte).
Paratypes - 61
specimen (41M, 20F, including an allotype (CAS, Type No. 11334), Socorro Sand Dunes, Baja California Norte, Mexico, 12-VII-1969
(S. C. Williams, V. F. Lee). Baja
California Norte, Mexico: 19 km N Rancho El Topo, I6-VII-I969 (Williams, Lee): 2.6 km W Colonia Guerrero, 16-VII-1962 (Parrish): Punta Baja. 2-IX-1963 (Schwenkmeyer).
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