384 
Psyche 
[Vol. 88 
Methods 
Test tubes (10 X 75 mm) were covered with Tack Trap®, a sticky 
trapping compound, and capped with a cork. Luminous twigs, 
conifer needles and leaf fragments, covered with mycelia of a 
Mycena sp., were put into 31 such tubes. An identical number of 
control tubes contained similar but nonluminous forest litter. Tubes 
with glowing fungi were placed as closely as possible to the original 
position of their contents (note that mycelia are most abundant deep 
in litter, but traps were placed on the litter surface). Controls were 
set ca. 80 mm to the side. Glass screw top vials (14 X 40 mm) were 
also coated with Tack Trap®. From 3-6 fruiting bodies of the 
luminous mushroom Dictyopanus pusillus were put into 72 such 
vials. An identical number of controls contained 3-6 D. pusillus, 
killed and rendered nonluminous by bathing in alcohol. Luminous 
and control vials were alternately placed, ca. 80 mm apart, on and 
by rotting logs on which D. pusillus had been found. Traps were put 
out at night, gathered the following morning, and arthropods stuck 
on their surfaces removed. 
All specimens were captured during August in Alachua County, 
Florida. 
Results 
More arthropods were captured on traps baited with glowing 
fungal mycelia ( Mycena sp.) and luminous fruiting bodies ( D . 
pusillus ) than their respective controls (x 2 = 10.14, p< .001; \ = 
6.41, p< .01, see Table 1). Taxa significantly more abundant on 
luminous traps in the summed samples are Collembola (x 2 — 12.81, 
p < .001), and Diptera = 5.54, p < .025). It is of interest that 
Collembola are not attracted to the bioluminescence of a sedentary 
luminous predator, larvae of the fungus gnat Orfelia fultoni (Sivin- 
ski 1982). Predators, i.e. spiders, ants, earwigs occur in a luminous: 
dark ratio that borders on significance (x 2 = 3.76, p < .10). Groups 
captured in statistically indistinguishable numbers on luminous and 
control traps are Isopods (x 2 — 0.78, p > .25) and Amphipods (x 2 = 
0.59, p > .25). An unusual set of captures is the 5 crickets, 
Eunemobius carolinus, taken only with luminous mycelia. 
