Sympetrum janeae spec. nov. from eastern North America, with a key to nearctic Sympetrum (Anisoptera: Libellulidae)

The new sp. is described from adult and larval material (holotype 6, allotype 9: marsh along Carle's Pond, Somerset Co., NJ, USA; 25-VII1-I984; deposited at USNM, Washington) and its affinities are discussed. Kalosympetrum subg.n. (type sp.: Libellula rubicundula Say) is introduced. Adult and larval keys to ncarctic Sympetrum are provided along with a summary of known distributions.