Leuctra usdi Grubbs 2010

Leipers Fork Needlefly

http://lsid.speciesfile.org/urn:lsid: Plecoptera .specie sfile.org:TaxonName:4322

(Figs. 43‒47)

Leuctra usdi Grubbs 2010:59 . Holotype ♂ (INHS), spring into Pinewood Branch, Leipers Fork of West Fork Harpeth River, 4 km W Leipers Fork, Williamson County, Tennessee

Male. The 7th abdominal dorsal process bears three lobes that terminate at the same plane; lateral lobes are small and directly somewhat diagonally; the medial lobe is subtruncate and ca. 4X the width of the lateral lobes (Fig. 43). The specilla are broadest basally, scarcely recurved and slightly tapered anteriorly, and bear raised tubercles distally along the inner and outer margins (Figs. 44‒47). The subanal lobes are recurved anteriorly, tapered distally, and ca. 80% the length of the specilla (Fig. 46).

Material examined. USA, Alabama, Limestone Co., spring into unnamed tributary to Scarce Grease Branch, 2 km SE Lester, 34.9806, -87.1309, 18 February 2008, S.A. Grubbs, 2♂ (Paratypes, WKU) . Tennessee, Williamson Co., spring into Pinewood Branch, Leipers Fork, West Fork Harpeth River, 4 km W Leipers Fork, 35.8944, -87.0388, 5 March 2007, S.A. Grubbs, 3♂, 2♀ (Paratypes, WKU); same locality but 12 March 2015, S.A. Grubbs, 1♂ (WKUC) .

Distribution. USA: AL, TN (DeWalt et al. 2015).

Remarks. This species is still known only from three small spring runs, two in middle Tennessee and one in northern Alabama (Grubbs 2010).