Leuctra tenuis (Pictet) .

This species is widely distributed across eastern North America (DeWalt et al. 2010) and has been reported from ravine streams in eastern Illinois (DeWalt 2002) and Trout Park near Elgin, in Kane County of northern Illinois (Frison 1935). It has since been extirpated from the latter location (DeWalt et al. 2005). Grubbs (2004) reported this species from southern Indiana near the Ohio River in Harrison County, Indiana.

We have recently collected this species from several ravine streams in central Indiana. The range of this species in Indiana is probably broader, but its late summer to autumn emergence has likely precluded a more comprehensive understanding of its statewide distribution. IN, Montgomery Co., Mill Creek, 8 km N Waveland, Pine Hills Nature Preserve, 39.9421, - 87.0503, 8/5/2006, R.E. DeWalt, 3♂, 4♀ (reared) (INHS) ; Tributary Sugar Creek, 6 km SSE Alamo, Pearl Ravine on Trail 2, Shades State Park, 39.945, - 87.0912, 8/5/2006, R.E. DeWalt, 6♂, 4♀ (reared) (INHS) ; Parke Co., Tributary Sugar Creek, 5 km NNW Marshall, Newby Gulch, Turkey Run State Park, 39.8882, -87.1998, 8/5/2006, R.E. DeWalt, ♂, ♀ (reared) (INHS) .