Pseudouroctonus m. castaneus
Pseudouroctonus m. thompsoni
Pseudouroctonus rufulus (Gertsch & Soleglad 1972)
Gertsch & Soleglad, 1972: 568, 584-585, fig. 27, 129, 130; Soleglad,
1973b: 353; Díaz Najera, 1975: 6, 9.
Vejovis rufulus: Stahnke, 1974: 130, 136.
Vaejovis rufulus: Williams, 1980: 53, 78, fig. 78, 81; Williams &
Savary, 1991: 284, fig. 23; Beutelspacher, 2000: 108, 137, 154, map 89.
Pseudouroctonus rufulus: Stockwell, 1992: 409; Kovarík, 1998: 145;
Gertsch & Soleglad 1972 - Male holotype from Punta Banda, Baja California
Norte, México, 200 ft., April 4, 1969 (S. Williams), in collection of
California Academy of Sciences (Type No. 11474).
Gertsch & Soleglad,
brownish scorpion allied to cazieri, distinguished by following
features: total length of female 26.9 mm., of male 25.7 mm.; male
roughly granulated but female quite smooth; median ocular tubercle well
in front of middle of carapace; pectinal teeth, nine for female, 11 for
male; chela large in male, well granulated, with fixed finger not so
long as palm width; chela of medium size in female, with fixed finger as
long as palm width; lower margins of fixed and movable fingers of
chelicerae smooth, without trace of denticles; all keels on cauda
prominent, granulated, bluntly serrated in side view.
COLORATION: Like that of cazieri, yellowish brown, with faint, dusky
mottling present on carapace and preabdomen, the latter also with pair
of dark, oval spots on each tergite forming median band running into
posterior one; keels on cauda and pedipalps reddish brown.
STRUCTURE: Similar to that of cazieri but cauda thinner and pedipalps
proportionally smaller. For measurements, see table 5.
Carapace: Of male: entire surface covered with quite heavy, round
granules; frontal lobes with six reddish bristles. Frontal emargination
a shallow, rounded indentation; median eye tubercle low, with few
rounded granules, situated three-eighths distance from front to
posterior margin. Median eyes small, 0.2 mm., separated by nearly their
diameter. Lateral eyes, three, but posterior eye minute or obsolete.
Carapace of female (fig. 129) with inconspicuous granules over most of
Preabdomen: Tergites of male with dull luster, finely granulated
throughout, with heavier granules along posterior margins and on each
side, most numerous in posterior tergites. Tergite VII with prominent
median and lateral pairs of keels, each armed with about a dozen heavy,
rounded granules; intercarinal spaces with numerous granules. Sternites
quite smooth; sternite V with weak traces of lateral keels. Tergites of
female smooth in appearance, seen to be finely granulated under high
power, with keels less strongly developed.
Cauda: Of male (fig. 27) with first segment broader than long; second
segment as long as broad; posterior segments longer than broad; fifth
caudal segment longer than carapace. All keels prominent, with serrate
granules; apical granules on dorsal and lateral keels forming distinct,
sharp spurs; intercarinal spaces on dorsum of all segments with
scattered granules, on venter largely lacking except on segment V. Cauda
of female with first three segments broader than long.
Telson: See figure 130. Vesicle elongate oval, slightly narrower than
caudal segment V, smooth above, with small granules below and on sides.
Sting almost half as long as vesicle.
Pectines: Those of female with median piece twice as wide as long, with
very shallow emargination in front; pectin twice as long as median
piece; middle lamellae, five; pectinal teeth, nine. Those of male with
number of middle lamellae, seven, and pectinal teeth, 11.
Chelicerae: With basic pattern of group; lower margin of movable finger
smooth; lower margin of fixed finger without trace of denticles or
Pedipalps: Of male like those of cazieri but with heavier granulation;
chela with superior keel smooth, pitted, flanked by rounded granules;
lateral keels more granulose, crenulate in lateral view. Keel of
denticles on fixed and movable fingers of chela with six and seven
supernumerary teeth respectively. Chela of female smaller.
Walking legs: Like those of cazieri: venter of tarsus with three fine
spines on each side of median line of spinules."
"Diagnosis.- Adults to 30 mm long.
Base color yellowish brown with faint dusky mottling on carapace and
mesosomal dorsum. Pedipalp fingers short, palm swollen; ratio of
movable-finger length to carapace length about 0.8-0.9; ratio of chela
length to palm width 2.8-3.0; palm with ventral keel obsolete; supernumerary
granules 6 on fixed finger, 7 on movable finger; fixed finger with
trichobothrium id slightly distal to finger origin, trichobothrium ip above
movable-finger articulation. Metasoma with segments I and II each wider than
long. III with length approximating width, IV with ratio of length to width
1.3-1.4; ventromedian and ventrolateral keels crenular. Pectine teeth 11-12
in males, 9-10 in females.
Similar to V. lindsayi but differs as follows: ventral keel of pedipalp palm distinctly developed, angular, granular (not rounded to obsolescent); trichobothrium
ip of fixed pedipalp finger directly over movable-finger articulation (notslightly distal)."
AMERICA. México (Baja California Norte - northwestern
coastal region from Punta Banda south to Puerto Santo Tomas.).
Published Records: Mexico: Baja California Norte; 11
mi. E Puerto Santo Tomas, at altitude of 150 ft., July 11, 1969 (S. C.
Williams, V. F. Lee), female. Punta Banda, 100 ft., July 10, 1969 (S. C.
Williams, V. F. Lee), male, female..
Gertsch and Soleglad (1972) derived
the species name "name from Latin rufus, reddish.". Williams
(1980) noted that this species appears
to prefer hard-packed sedimentary terrain. Most specimens have been collected under dead agave and rocks.