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Collection of Zapada chila Ricker (Plecoptera: Nemouridae)

Published by National Park Service | Department of the Interior | Metadata Last Checked: January 25, 2026 | Last Modified: 2016-10-11T00:00:00Z
"Two different PIs, working separately, took permits to seek specimens of the stonefly genus Zapada for a taxonomic study. A new species (Z. fumosa n. sp.) is currently being described from Walker Camp Prong in GRSM (Grubbs et al., in preparation). While this species appears to be somewhat well-distributed across the high Southern Appalachian Mountains, it is now apparent that Z. chila, coincidentally also described from Walker Camp Prong over 60 years ago is amongst the rarest of stonefly species in eastern North America. Zapada chila is known from only five specimens collected between 1944 and 1979. This permit would serve two purposes: to assess if Z. chila is still present in Walker Camp Prong and provide needed fresh material to complete the taxonomic study of eastern Zapada. Z. chila was relocated from two locations on Walker Camp Prong in 2014 for the first time in 35 years. The new species was found there and also near the top of Noland Creek. Three additional stonefly species were searched for by one of the PIs (Scott Grubbs). Leuctra monticola and L. nephophila (Plecoptera, Leuctridae) were described from Cades Cove and Andrews Bald, respectively. Both species are endemic to the high southern Appalachian Mountains and very uncommon in collections. Along with four others, these two species has been placed in the Leuctra biloba species group. He seeks to assess if an unassigned species fits into this group using the current morphologically-based character traits. The third species, Acroneuria filicis (Plecoptera, Perlidae) was described from southeastern Kentucky ca. 70 years ago. A paratype series was also designated from ""Chimneys Camp Grounds."" Recent SEM work in my lab with eggs of this species has shown the GRSM specimens to be distinctive from A. filicis from the Type Locality in Kentucky and elsewhere from several localities throughout eastern North America. He anticipates that the GRSM A. filicis represents an undescribed species. Grubbs collected in summer of 2015, but needs to collect for L. monticola in the spring. Grubbs was able to locate Z. chila from Walker Camp Prong and L. nephophila from Noland Creek. Specimens of additoinal species were collected."

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