Freshwater Mussels Middle Island Creek 157 



Additional data on the museum specimens are included in Table 1. Over 

 two hundred specimens were collected during this study. 



DISCUSSION 



Middle Island Creek apparently is a stream of good water quality. 

 The large number of mussel species and individuals indicate thriving 

 populations. Eight species were newly found in the creek, and all species 

 previously reported (Ortmann 1919; Bates 1971) were still present. Most 

 of the species are very common and widespread throughout the upper 

 Ohio River basin, but Villosa fabalis (Lea, 1831) and Pleurobema clava 



Table 1. List of mussel species of Middle Island Creek, West Virginia, and sam- 

 pling sites where each occurred. Museums housing historical specimens are indi- 

 cated in parentheses. Asterisk (*) indicates first time collected in Middle Island 

 Creek. 



Species Sampling site 



12 3 4 5 6 



Anodonta grandis grandis Say (OSU) X X 



Strophitus undulatus undulatus (Say) (MCZ) X X 



Alasmidonta marginata Say* 



Simpsonaias ambigua (Say)* X 



Lasmigona complanata (Barnes) (OSU, CM) X 



Lasmigona costata (Rafinesque) (OSU) 



Tritogonia verrucosa (Rafinesque) (OSU) 



Quadrula quadrula (Rafinesque) (OSU, CM) 



Quadrula pustulosa pustulosa (Lea)* 



Amblema plicata plicata (Say) (OSU) 



Fusconaia flava (Rafinesque) (MCZ, OSU) 



Pleurobema clava (Lamarck)* 



Elliptio dilatata (Rafinesque) (OSU) 



Ptychobranchus fasciolaris (Rafinesque) (OSU) 



Actinonaias ligamentina carinata (Barnes)* 



Obovaria subrotunda (Rafinesque) 



Villosa fabalis (Lea)* 



Villosa iris iris (Lea)* 



Lampsilis radiata luteola (Lamarck) (MCZ) 



Lampsilis ventricosa (Barnes) (MCZ) 



Lampsilis fasciola Rafinesque (OSU) 



Epioblasma triquetra (Rafinesque)* 











X 





X 



X 



X 



X 



X 

 X 

 X 



X 



X 



X 



X 



X 



X 



X 

 X 



X 





X 



X 



X 



X 



X 



X 



X 



X 



X 









X 



X 



X 



X 



X 



X 





X 



X 



X 



X 



X 



X 



X 



X 



X 



X 



X 



X 



