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American Midland Naturalist Monograph No. 1 



a tuft of long, barbed hairs. Body wall thin, semi-translucent, smooth and 

 shining. 



Tubercles. — In addition to the large, tufted tubercles which accentuate the 

 margins are numerous small ones with one to four small hairs on each, scat- 

 tered over the dorsal surface. They are absent or faint on the lateral walls 

 above the legs. There is a large one above leg I and another above leg II. 

 Anterior to the mouth parts on the venter, tubercles small and each with a 

 single hair. 



Discs. — Evidenced only by faint depressions in symmetrical areas which 

 lack tubercles; absent on the venter. 



Legs. — Long and large, with the surfaces smooth and shining and with 

 numerous long, barbed hairs. All tarsi lack subapical dorsal protuberances and 

 humps. Claws large. Length of tarsus I, 0.9; metatarsus, 1.02. Length of tarsus 

 IV, 1.56; metatarsus, 1.20. (Measurement from a late nymphal stage which is 

 about as large as the adult.) 



Coxae. — All coxae contiguous, smooth, shining, and with hairs as on the 

 legs. 



Fig. 56. Antricola marginalus (Banks). A, Tubercles from the margins. B, Leg I 

 of nymph. C, Leg IV of nymph. D, Barbed hair. E, Capitulum of nymph, lateral view. 



