i8o 
Psyche 
[June 
Female. Carapace: (Figs. 7, 8, 20). Lateral border rounded in 
dorsal view, widest at or behind center ; somewhat constricted at ant. 
portion of pars cephalica. Shape and position of thoracic groove and 
distribution of setae similar to that in male. Pars cephalica model ate- 
ly elevated, highest either at eye group or slightly behind. Height of 
clypeus at ALE 1 to 2 times vertical diam. of ALE. Diam. of AME 
1 to 2 times their distance apart. Sternum: (Fig. 36). Elongate. 
Shape and position of sigilla as in male. Sternal setae all slender. 
Chelicerae: (Figs. 7, 8, 41). Dorsal protuberance broadly rounded 
in side view. Microteeth positioned beside last 7 to last 3 macro- 
teeth; often extend beyond last macrotooth. No seta-less area on 
ectal side of ant. half of macrotooth row. Abdomen: Single tergite 
corresponding to second tergite on male. Group of prominent setae 
ant. to tergite, sometimes with small patches of sclerotized cuticle at 
their bases, corresponding with first tergite on male. Spinnerets: (Fig. 
30). AL greatly reduced; lacking spigots; not more than 1/7 as long 
as PM, often much less. PM as in males. Genitalia: (Figs. 90-94). 
Seminal receptacles relatively weakly sclerotized ; stalks strongly 
sinuous to stouter and non-sinuous; bowl very weakly developed, its 
border with bulb ill-defined. Coloration : Pars cephalica pale yellow 
to light grayish orange; pars thoracica the same or slightly paler. 
Sternum same as pars cephalica; labium and palpal coxae slightly 
darker. Chelicerae pale grayish orange to orange brown. Pedipalps 
and legs dorsally similar to pars cephalica, ventrally slightly lighter. 
Abdomen similar to male; tergite usually lighter than male tergites. 
diagnosis. Both sexes of A. gertschi can be separated from the 
other species by the greatly reduced AL spinnerets which are 1/5 
or less as long as the PM spinnerets and by the setae scattered over 
the pars thoracica. Also, the relatively small size of the eye group 
and the AME allow separation from the other species by OQW/CL 
and CL/AMD (Tables I and 11). Males. The structure of the 
palpus (Figs. 58-60) and the shapes and macrosetae distribution pat- 
terns of the tibia and metatarsus of leg I (Figs. 74-77) are distinctive 
Explanation of Plate 13 
Figs. 61-67. Geographic variation in A. gertschi. (All measurements 
in mm. For scatter diagrams solid black dots represent P specimens, X’ s 
represent M specimens.) 61-63. Males. 61. Mod. Dice-Leraas diagram of 
CL variation. 62. Scatter diagram of ITarL plotted against CL. 63. Scatter 
diagram of IML plotted against CL. 64-67. Females. 64. Histogram of 
ICTR. (One unit of vertical scale represents a single specimen.) 65. Histo- 
gram of CT. (One unit of vertical scale represents a single chelicera.) 
66. Mod. Dice-Leraas diagram of CT/ICTR variation. 67. Scatter diagram 
of IVTL plotted against CL. 
