Cr 
fs) 
c AMERICAN SPIDERS AND THEIR SPINNINGWORK. 
to a readier comparison from which to get clearer light, if possible, upon 
some questions on the general relations between hosts and guests.! The 
first column gives the name of the spider, when known, the second column 
the name of the parasite, the third column the character of the parasitism :— 
ORBWEAVERS. 
Argiope cophinaria. Pezomachus (?) n. sp. Egg parasite. 
n rf Pimpla rufopectus. Us mh 
Be ue Pimpla scriptifrons. a = 
ns Ls Mestocharis wilderi. ig Me 
af y: Chrysocharis banksii. e ef 
ne 2 -Chrysocharis pikei. My . 
Argiope argentata. Eupelmus piceus. 5 § 
Epeira cavatica. Large unknown larva. Body parasite.” 
Epeira (unknown). Pimpla rufopectus. Ege parasite. 
me a Holcopelte nitens.* 
rf f Beeus americanus. et + 
se « Pezomachus dimidiatus (?). 7. f 
Epeira cayatica. Pezomachus gracile (?). s 4s 
Bpeira strix (?). Polysphincta koekelei. Body parasite. 
i J Polysphineta strigis. g: se 
Epeira diademata. Hemiteles similis.* « iY 
fe Wy Hemiteles tristator.* Ege parasite. 
mt ‘ Pimpla oculatoria.* “ 
bf ui Polysphineta bodps.* Body parasite. 
+ s Polysphincta carbonator.* y 
4 f Polysphincta rufipes.* fe . 
Hpeira cucurbitina, Polysphincta carbonator. eS ve 
Wpeira antriada (?). se ae = Us s 
Epeira cucurbitina. Polysphincta tuberosa.* fF 
Epeira angulata. Pimpla aquilonia (?). Egg parasite. 
Le Mestocharis wilderi. ss 4 
Epeirid cocoon. Tetraslichus banksii.* y is 
LINEWEAVERS. 
Theridium spirale (?). Polysphineta n. sp. Body parasite. 
Theridium (unknown), Pezomachus fasciatus.* 4 f 
Steatoda borealis. Polysphincta n, sp. ef : 
Linyphia communis. fi Ki BE 
Labulla inconstans. “ a . fc 
Theridium ; Polysphincta theridii. 4 Y3 
Theridium : Polysphineta bodps.* a us 
‘TUBEWEAVERS. 
Dictyna volupis. Polysphincta dictyne. Body parasite. 
Micaria (unknown). Pezomachus micarize. Ege parasite. 
1 Those species marked with stars (*) are European species. 
2, Within the body. 
’ Probably hyperparasitic, primarily infesting some Ichneumonid in the spider’s cocoon, 
Howard. 
* THyperparasitic. Toward. 
