The Neotrichia caxima Group (Trichoptera: Hydroptilidae) in the southeastern United States Author Harris, Steven C. Author Rasmussen, Andrew K. text Zootaxa 2010 2608 25 44 journal article 10.5281/zenodo.197730 4d396133-2bba-4288-aef5-6de78bb06c8b 1175-5326 197730 Neotrichia mentonensis Frazer and Harris ( Figs 15 , 16 ) Frazer and Harris (1991) : 7, 3 Neotrichia mentonensis is endemic to several tributaries of the Little River along the Alabama/ Georgia state line. Males are separated from the similar N. dracanamalama on the basis of the inferior appendages which have an undivided dorsal process in ventral view ( Fig. 15 B). Female. Length 1.9–2.1 mm , 17 antennal segments, brown in alcohol. Abdominal segments VII–X typical for genus, sternum VIII with large, rectanguloid mesal plate ( Fig. 16 B) similar in general appearance to that of N. rasmusseni . However, anterior margin of plate in N. mentonensis relatively straight compared to sinuate margin seen in N. rasmusseni . Bursa copulatrix ( Fig. 16 A) with tapering copulatory channel about same length as genital chamber; this chamber with sclerotized bands laterally extending anteriorly as elongate processes, tapering to acute apex, bell-shaped mesal sclerite divergent anteriorly. Material examined. Alabama, DeKalb County , West Fork of Little River @ Union Bridge, nr. Cloudmont Resort, 22 June 1988 , Frazer, 53, 2Ƥ. Georgia , Chattooga County, Gilreach Creek @ Co. Hwy. 234, N34.34 , W85.27 , 21 July1989 , Frazer, 1Ƥ. Distribution. AL, GA.