Pan4roctonus
differentiated
by any one of the following: telotarsi I-III with 4, 5,5-6
(usually six on III) retrosuperior
setae (Fig. 16); basitarsus III with nine to 10 superior
setae (Figs. 30-31); basitarsi
I-III strongly compresselda terally, superior setae on each
segmenti n single fde (Figs.
28-31); humeral macrosetae inconspicuous or absent on internal surface,
three on dorsal
surface (proximal absent); chelal internal setae absent;
chela with four (of 26) triehobothrla
on ventral palm (Figs. 23-24); dorsal metasomal setae I-IV
inconspicuous in both
sexes, 0,1,1,1 pairs: pectinal teeth in males 26-27.
ComparisonsT: able 2. Differs further from P.
borregoensisi n having one retroinferior
terminal seta on telotarsus I.
Description of female holotype (adult male
unknown).-Measurements: Table
Coloration: pale yellow with very weak fuseous markings on
carapace and tergites.
Carapace: anterior margin very subtly concave; surface very
finely granular; furrows and
carinae weakly developed except posterior median furrow
moderately developed postedorly.
Tergites: I-VI uniformly extremely freely granular,
posterior margins with very weak
granules; VII finely granular; median carina I-IV obsolete,
V-VI barely discernible, VII
smooth, weak; VII paired lateral carinae weakly developed,
weakly granular. Sternites:
III-VI smooth to very freely granular; VII lightly granular,
one pair moderately developed
granular lateral earinae. Metasomacl arinae: dorsals I-IV
weak, crenulate, dorsal furrow
I-III shallow, IV very shallow; dorsolaterals I-IV very
weakly granular, V obsolete,
smooth; laterals I weakly granular, II-IV obsolete, V marked
by few weak granules
anteriorly; ventrolaterals I-III weak, smooth, IV weakly
granular, V granular to dentate;
ventrals I obsolete, II-III weak, smooth, IV weakly
granular, V dentate; intercarinal
surfaces very finely granular except V sparsely granular
ventrally. Metasomasle tae: short
to moderately long, very fine; dorsals 0,1,1,1;
dorsolaterals inconspicuous or absent;
laterals 0,0,0,0,2-3 ; ventrolaterals 2,3,3,4,10; ventrals
2.3,4,4. Telson: smooth; eight pairs
long lateral and ventral setae. Pectines: do not quite reach
distal margin of coxa IV.
Chelieera: fixed digit with one or two pigmented dentieles
on inferior border; movable
digit with four or five crenulations on inferior border.
Humerus: all earinae moderately
developed, lightly to moderately granular; intercarinal
surfaces very finely granular;
macrosetae include three dorsals, proximal absent, and two
external medials; internal
surface without macrosetae. Brachium: internal carinae
weakly granular, extemal carinae
obsolete to smooth; intercadnal surfaces smooth; four
internal macrosetae, dim short and
t’me. Chela: all carinae weak, smooth, except ventroexternal and ventral
lightly granular
proximally; intercarinal surfaces smooth; internal
macrosetae inconspicuous or absent;
primary denticles on fixed fingers 3,4,5-6,5,5-4,6-5,
movable fingers 6-5,6,6,6-7,6-4,3-4.
Basitarsi I-III: strongly compressedla terally; mrs seta on
III short, free, set well away
from superior setae; superior setae 6-5,8,10. Telotarsal
setae I-IV: proinferiors 1,1,1,1,
distal inconspicuous or absent on each segment;promedials
2,2,2,1 ;prosupedors
3,3,3,3,
proximal distinctly smallest on each; retrosuperiors
4,5,5-6,4, proximal reduced on IV;
retromedials 1,2,2,2; retroinfefiors 0,1,2,2, distal
inconspicuous or absent on each segment
III-IV; retroinferior terminals 1,2,2,2, most superior of
two inconspicuous or very
fme.UngueIs4 V: about 3/4 as long as, or samel ength as,
telotarsus.
Variation.-Weak fuscous markings more evident in immatures.
Ventral metasomal
setae varied 2,3,3-4,4; laterals on V varied from 0 to 3.
Pectines in juvenile male extend to
1/2 length of trochanter IV. Primary dentides in rows 1-5
total on pedipalp fixed finger
22, movable finger 27-32.
Etymology.-The name "hirsutipes" refers to the relatively
numerous tarsal setae
characterizing this species.
Remarks.-This species and P. xanthus represent the
most conspicuously modified
arenicolous species in the genus Paruroctonus.B oth
species appear to be restricted to the
extensive sand dunes at the northern end of the Gulf of
California.
Distribution.-Fig. 27. Extreme southeastern California and
adjacent Yuma County,
Arizona.
Specimenes xamine&-ParatypeUs.. S.A.: CALIFORNIImAp;
erial County, 13 mi. WW interhaven,
18 March1 976( M. A. Cazier, O. F. Francke), 1 male, 1
female (OFF):A RIZONYAu;m aC ount. 1
mi. WS omerton1, 9 March1 976( M.A . Cazier, O. F. Francke),1 female(
OFF)
