1969] 
Rambla — Cave Harvestmen 
395 
Palpus about twice as long as the body, armed ventrolaterally as 
in Fig. 5, dorsally unarmed. Tarsal claw long and curved. 
Legs extremely long and slender, covered with hairs and fine 
granules. Metatarsi divided into astragali and calcanea. Fine granu- 
lations on legs terminate abruptly at calcaneus of metatarsus. Femur 
of first leg has a row of few small tubercles on the ventral surface. 
The fourth leg has an extremely long first tarsal article, other legs 
have first tarsal article longer than the remaining ones (Fig. 7). 
Tarsal formula: 4, 10, 5, 5. Distitarsus of first tarsus with two 
articles, second with four. Third and fourth tarsi of immature speci- 
mens with pretarsus (P), arolium (A) and unguiculus (U) 
(Fig. 6). 
Body concolorous, pale yellow-orange, with venter somewhat 
lighter than dorsum. Appendages the same color as body, but tarsus 
and metatarsus lighter yellowish. 
Penis long and slender. Total length, 1.40 mm. Ventral plate 
of penis armed as in Fig. 8a and b. Tip folded into membranous 
cover, and connected at two lateral projections. 
Female paratype. Total body length, 2.67 mm. Greatest width 
of body 1.57 mm. Chelicera proximal article, 0.78 mm; distal 
article, 1.28 mm. Palpal femur, 1.52 mm; patella., 0.71 mm; tibia, 
1.25 mm; tarsus, 0.92 mm; total length 4.40 mm. Femur of first 
leg, 1.86 mm; total leg length 7.21 mm. Second femur, 3.28 mm; 
total length, 13.54 mm - Third femur, 2.25 mm; total length, 
9.25 mm. Fourth femur, 3.21 mm; total length 11.25 mm - 
Similar in appearance to male but lacking the small tubercles on 
the first femur. Armature of chelicera and palpus are much re- 
duced and less prominent, as shown in Figs. 9, 10, 11. Also body 
and appendages are reduced in size. 
Ovipositor short and enlarged. Total length, 0.70 mm. Width 
at widest portion, 0.60 mm. Ventral plate armed as in Fig. 12a. 
Apex in a frontal view shows a geometric drawing as in Fig. 12b. 
Variations. Males studied showed some variability. One of the 
two males from Oxford Cave has the following measurements: 
total length, 2.75 mm; width of body, 1.72 mm; chelicera, proximal 
segment, 0.80 mm; distal segment, 1.10 mm. Palpal femur, 1.60 mm; 
Figs. 4-8. Stygnomma fiskei n. sp. 4. Lateral view of cheliceral claws, 
male holotype. 5. Ventral view of palpus, male holotype. 6. Fourth 
tarsus of immature specimen. 7. Lateral view of tarsi and distal portion 
of metatarsi of male holotype. 8. Ventral face of penis of male holotype; 
a. Whole penis, b. Tip, much enlarged. (Abbreviations: A, arolium; 
P, pretarsus; U, unguiculus.) 
