Acroneuria kosztarabi Kondratieff & Kirchner 1993

Acroneuria kosztarabi Kondratieff & Kirchner, 1993 Notes Acroneuria kosztarabi is commonly referred to as the Virginia Stone (Stark et al. 2012). This species was known from a relatively small range from Ohio south to North Carolina and Tennessee (Verdone et al. 2022, DeWalt et al. 2024). Verdone et al. (2022) recently provided evidence that Acroneuria kirchneri Stark & Kondratieff, 2004 is a junior subjective synonym of this species. Historical reports of A. trijuncta (Walker, 1852) by Needham (1925) pertain to this species. In New York, adult collection dates for this species range from late June to mid-July (Fig. 33). These records represent a new state record and a significant northward range extension. Our records are from large, low elevation lakes (see below) at elevations ranging from 28-99 m asl (Fig. 34) from Level IV Ecoregions Eastern Adirondack Foothills (58 ac) and Champlain Lowlands (83 b) in northeastern New York (Fig. 35 c). No recent collections of this species have been made in Lake George. We collected pre-emergent nymphs from the undersides of large rocks on south-facing exposed shorelines of Lake Champlain. Our failed attempts to collect this species from accessible areas of the shoreline in May and June over the course of several years suggest that the nymphs of this species may spend much of their life cycle in deeper waters that are inaccessible to standard collection techniques. In Virginia and North Carolina Verdone et al. (2022) found larvae of A. kosztarabi in pools and runs of rivers in areas of lower velocity.