Key to species of Polyphrix Townes 1 Ovipositor slender, ventral valve apex with two basal teeth widely spaced; width of transverse furrow at base of propodeum, measured centrally, 1.00 width of basal area of propodeum (Figs. 18, 19); para­ocular white stripe complete, encircling eye fully (Fig. 8)........................................................................................................................... 2 ­ Ovipositor thick, ventral valve apex with all teeth uniformly spaced (Fig. 3); width of transverse furrow at base of propodeum, measured centrally, 0.73–0.76 width of basal area of propodeum (Fig. 17); para­ocular white stripe absent from supraclypeal area to posterior orbit (Fig. 7) ......................................................................... P. atlantica sp. n. 2 Pronotum laterally with dorsal submarginal lamellar protuberance clearly exceeding dorsal margin medially (Figs. 4, 12), projecting upwards (Fig. 15); antenna with 8 fully white flagellomeres; propodeum with four large, oval dark spots, two in front of and two behind anterior transverse carina (Fig 18); areolet 1.80 wider than high....................................................................................................................... P. cristata sp. n. ­ Pronotum with dorsal submarginal protuberance moderately small, sharp (Fig. 13), projecting laterally (Fig. 16); antenna with 11–12 fully white flagellomeres; propodeum without dark spots (Fig. 19); areolet 1.87–2.40 wider than high......................... ............................................................................................................ P. varians Townes

Published as part of Nogueira, Liana K. & Aguiar, Alexandre P., 2005, Generic definition, key, and two new species of Polyphrix Townes (Hymenoptera: Ichneumonidae: Cryptinae) from the Atlantic Forest, pp. 25-35 in Zootaxa 1010 (1) on pages 33-34, DOI: 10.11646/zootaxa.1010.1.3, http://zenodo.org/record/5048972