62 David R. Lenat 



P. papillifera I R 



Mooreobdella tetragon R 



TURBELLARI 



Cura foremanii C 



Dugesia tigrina C 



Hydrolimax grisea R 



BRYOZOA 



Plumatella repens C 



Fredericella sultana R 



MISCELLANEOUS 



Porifera: Eunapius sp. C 



Nemertea: Prostoma graecens R 



Hydracarina C 



Nematoda C 



' Includes Isonychia bicolor. 



^ Subgenera listed for Ephemerella are considered as genera by some authors. 



^ Old identifications of Lewis (1974) have been revised in accordance with Bed- 



narik and McCafferty (1979). 

 ■* Includes Enallagma divergens. 

 ^ Includes Oecetis cf. cinerascens. 

 ^ Probably includes Cernotina sp. 

 ^ This species listed as Parametriocnemus in many other surveys. 



Near Pseudorthocladius; identified by Len Ferrington. 



"reported from New Jersey and east Pennsylvania". This interpretation 

 of range probably results from taxonomic difficulties rather than rarity. 

 I have found this species to be widespread in Piedmont and Coastal 

 Plain streams, especially in the latter. 



Several common Piedmont macroinvertebrates were rare or absent 

 in Cane Creek. Ephemerella catawba Traver, which I have found to be a 

 highly abundant organism in most Piedmont streams, was collected 

 only once. This mayfly prefers sand-gravel areas, a rare habitat in Cane 

 Creek. The lack of sand substrates probably also accounts for the 

 absence of Baetisca Carolina Traver, Progomphus obscurus Rambur, 

 and Robackia demeijerei (Kruseman). 



Taxa collected in first-order tributaries were markedly different 

 from the fauna at lower stream stations. Many of these first-order 

 stream taxa were more typical of small mountain streams: Diplectrona 

 modesta Banks, Ephemerella funeralis McDonnough, Amphinemura 

 sp., Micropsectra sp., and Heterotrissocladius sp. This may reflect the 

 colder water temperature normally found in headwater areas (Vannote 

 and Sweeney 1980). Other taxa collected only in first-order tributaries 

 included Paraleptophlebia sp., Eccoptura xanthenes (Newman), Pyc- 

 nopsyche gentilis (McLachlan), and Molanna blenda Sibley. 



