1963] 
Domicile — Florida Spiders 
35 
Florida Localities. Liberty County ; Tallahassee ; Leesburg ; T rilby. 
Comments. P. placidus appears to be a characteristic spider of 
coniferous trees. Both adults and immatures are recognized by the 
presence of a prolateral, dark, longitudinal band on patellae III and 
IV. Adult males have a coat of shiny scales on the abdominal dorsum, 
as do also the males of peninsulanus , marxi, and imbecillus. 
Philodromus peninsulanus Gertsch 
Figures 4, 9, 12, 18 
Synonymy. See Roewer (1954) and Bonnet (1958). 
Description. Male: total length 3.20 mm; cephalothorax 1.60 mm 
long and 1.56 mm wide; femur II 2.28 mm long; ocular quadrangle 
0.28 mm long and 0.49 mm wide. These measurements and the 
description that follows are taken from the type male. Carapace dis- 
tinctly longer than wide, side margins abruptly constricted at the 
level of the posterior row of eyes; flattened in appearance, sloping 
gradually to the sides from the area of the dorsal groove; orange- 
yellow in color, with a thin white line at side margins and a pair 
of dusky, submarginal, longitudinal bands; pale median band indis- 
tinct, terminating anteriorly at the “cervical groove”, which is marked 
by a white V. Eyes, except the anterior medians, seated on low, white 
tubercles. Legs orange-yellow. Dorsum of abdomen yellow-white, 
with a thin coat of shiny scales. Venter off-white. 
Tibia of palpus slightly longer than wide, approximately the same 
thickness throughout; lateral apophysis shorter than the ventral, 
about as wide as long, with a short point on the lower corner (Fig. 4) . 
Embolus slender and somewhat sinuate, arising proximally on the 
prolateral margin of the tegulum (Fig. 18). 
Female: The female is described here for the first time. The fol- 
lowing measurements are from a single female: total length 4.00 mm; 
cephalothorax 1.69 mm long and 1.64 mm wide; femur II 1.76 mm 
long; ocular quadrangle 0.28 mm long and 0.54 mm wide. Carapace 
similar in shape and color to that of the male. Legs and abdomen 
colored as in male, but without abdominal scales. Median plate of 
epigynum sinuous along the sides (Fig. 9). Spermathecae elongate 
(Fig. 12). 
Range. The species is represented only by the type male and a 
female collected in Brevard County, Florida, both of which are in 
the American Museum of Natural History. 
Comments. P. peninsulanus is similar to P. placidus, as noted by 
Gertsch (1934) in his diagnosis of the former, but in peninsulanus 
the femora are shorter and the ocular quadrangle wider. In color, 
