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FAMILY VAEJOVIDAEGenus ParavaejovisGenus Paruroctonus

boreus infragroup

     Paruroctonus arnaudi
     Paruroctonus bantai
          Paruroctonus bantai bantai
          Paruroctonus bantai saratoga
     Paruroctonus boreus
     Paruroctonus maritimus
     Paruroctonus silvestrii
     Paruroctonus variabilis
   becki microgroup
     Paruroctonus becki
   xanthus microgroup
     Paruroctonus xanthus
   baergi microgroup
     Paruroctonus arenicola
          Paruroctonus arenicola arenicola
          Paruroctonus arenicola nudipes
     Paruroctonus baergi
     Paruroctonus boquillas
     Paruroctonus marksi
     Paruroctonus utahensis
gracilior infragroup
     Paruroctonus gracilior
stahnkei infragroup
   stahnkei microgroup
     Paruroctonus stahnkei
   shulovi microgroup
     Paruroctonus shulovi
          Paruroctonus shulovi shulovi
          Paruroctonus shuvoli nevadae
     Paruroctonus simulatus
   borregoensis microgroup
     Paruroctonus ammonastes
     Paruroctonus bajae
     Paruroctonus borregoensis
          Paruroctonus b. borregoensis
          Paruroctonus b. actites
     Paruroctonus hirsutipes
     Paruroctonus luteolus
     Paruroctonus nitidus
     Paruroctonus pseudopumilis
     Paruroctonus surensis
     Paruroctonus ventosus
   williamsi microgroup
     Paruroctonus pecos
     Paruroctonus williamsi

Genus PseudouroctonusGenus Serradigitus
Genus Smeringerus
Genus Syntropis
Genus Uroctonites
Genus Uroctonus
Genus Vaejovis
Genus Vejovoidus

Catalog of the VaejovidaeVaejovid  Bibliography

Why study vaejovids?

Paruroctonus utahensis (Williams 1968)

Vejovis boreus (MIS): Bugbee, 1942: 320 (see Sissom and Francke 1981: 94)..
(Paruroctonus) aquilonalis (MIS): Gertsch & Allred, 1965: 9 (part); Gertsch & Soleglad, 1966: 7, 42-44, fig. 20, 23 (part see Sissom and Francke 1981: 94).
(Paruroctonus) utahensis Williams, 1968b: 313-315, fig. 1-2 tbl. 1.
Paruroctonus aquilonalis
(MIS): Williams, 1972: 3 (part?); Soleglad, 1972a: 74 (part?); Soleglad, 1973b: 355 (part?); Stahnke, 1974a: 138 (part?); Muma, 1975a: 55; Rowland & Reddell, 1976: 1; Riddle et al. 1976: 295; Riddle and Pugach 1976: 248; Riddle 1978: 243; Beutelspacher, 2000: 65, 139, 146, 152, map 31.
Paruroctonus utahensis
: Williams, 1972: 3; Soleglad, 1972a: 74; Soleglad, 1973b: 355, tbl. 2; Johnson and Allred 1972: 157, 169-170, fig. 24, tbl. 9; Stahnke 1974: 138; Allred & Gertsch, 1976: 95, 99; Riddle 1979: 125, 1981:233; Sissom & Francke, 1981: 94, 95, 107, fig. 1-6, 29, 30, 35; Francke & Soleglad, 1981: 251,  figs. 50-52; Polis et al. 1981: 11, 16; Bradley & Brody, 1984: 437-440; Sissom, 1997: 13; Kovarík, 1998: 144; Sissom & Jackman, 1997: 151; Sissom, 2000:510.
Vaejovis aquilonalis
(MIS): Díaz Najera, 1975: 6, 19.
(Paruroctonus) utahensis: Haradon, 1984a: 211-212, fig. 5-8, 10, 19-20, 36; Haradon, 1985: 24.

type(s):  Vejovis (Paruroctonus) utahensis Williams: Holotype male (adult) from U.S.A., Utah, San Juan County, 2 miles NE Bluff, 14 July 1967 (S. C. Williams, M. A. Cazier, J. Davidson). Depository: CAS, Type No. 10175.

subsequent accounts:
Haradon 1984a Diagnosis.-A species in the baergi group of nominate subgenus Paruroctonus differentiated by: telotarsus III with four long retrosuperior setae, and two retromedial setae (subdistal seta may be smaller than distal) (Fig. I0); basitarsus III with seven to (usually eight) superior setae in essentially single file, mrs seta slightly freer than and about 1/2 as long as superior setae (Figs. 7-8); humeral macrosetae include three inframedials on proximal 3/5 of internal surface (distal may be smaller than others) (similar (Fig. 15), and two or three (usually two) medials on distal 3/5 of external surface (similar to Fig. 14); pedipalp internal macrosetae include four on palm, two on movable finger, none on fixed finger (Fig. 36); pedipaip fingers in adult male weakly scalloped, closed fingers form narrow proximal gap (Fig. 19); pectines in adult female barely extend trochamer IV, carapace length/pectinal anterior margin length ratio greater than 1.5. Intragroup comparisons are presented in Table 4. The above diagnosis is based upon specimens (CAS, AMNH) from Utah (paratopotypes), New México, Texas and Chihuahua, representing previously reported localities.

distribution: NORTH AMERICA. México(Chihuahua), USA (Arizona, New México, Texas, Utah): Colorado River and Rio Grande drainages in southern Utah, northern Arizona, New México, western Texas, and northern Chihuahua. View Map

published records:  Paratypes: 12M, 19F (CAS; including F allotype “CAS, Type No. 10175”), same locality as holotype; 46M, 20F from 1/2 mi W Bluff (CAS); 9M, 8F from Bluff city limits, in flood plain of San Juan River, San Juan County, Utah, USA.

notes:  Beutelspacher (2000) used the name Paruroctonus aquilonalis, although it has long been placed in synonymy (Sissom & Francke, 1981). He also erroneously listed the species as part of the fauna of Sonora (p. 146), although his only record is the specimen from the Samalayuca Dunes in Chihuahua reported by Gertsch & Soleglad (1966).

Sissom and Hendrickson 2005:39,40 - Key to the Vaejovid Scorpion Species of Northeastern México - Dorsolateral carinae of metasoma more or less evenly denticulate throughout (i.e., without an enlarged terminal denticle); legs I–III with distinct retrolateral setal combs; Anterior margin of carapace almost straight; fixed cheliceral finger with ventral keel extending from tip to bicusp area; Pectinal tooth counts above 24 in males and 17 in females; basitarsus of leg II without mrs seta (Haradon 1985; Sissom & Henson 1998); pedipalp chela fixed finger with more than 30 primary denticles (excluding those of proximal row); Pedipalp femur with two or three external medial setae; with 0, 1, 1, 2 pairs of setae on dorsolateral carinae of metasoma I–IV; with 0, 1, 1, 2 pairs of setae on the lateral supramedians; with 1 pair of setae on lateral inframedians of metasomal segment I; with 2, 3, 3, 4 pairs of setae on the ventrolateral carinae of I–IV. Samalayuca Dunes, Chihuahua......... Paruroctonus utahensis



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