Identification key to the South American species of Purenleon 1. Mid tibia greatly swollen (Fig. 9d), distinctly broader than foretibia; basitarsus of hind leg about twice as long as greatest diameter; posterior margin of sternite VII in the female elongated laterally (Fig. 10f), like a small gonapophyses (tibialis gr oup)������.���.���.���.���.���.���.������.���.���.���.���.���.���.���.���.���.���.���.���.���...2 1���. Mid tibia weakly swollen (Fig. 2d), about equal in breadth to foretibia; basitarsus of hind leg at least 2.5 times longer than greatest diameter; sternite VII of female not produced laterally (Fig. 4b) (bistictus group)���.���.���.���.���.���.���.���.���.���.5 2. Thorax mostly dark brown (Fig. 7d)������.���.���.���.���.���.���.���.���.���.���.���.���. 3 2���. Thorax mostly yellow (Fig. 9b)............................................................................ 4 3. Forewing with small brown marks on the base of most radial crossveins; mid tibia mostly dark brown with light brown areas; male parameres not dorsally enlarged and with apex sclerotized and rough; female with pregenital plate reduced������.���.���.���.���.���.���.���.���.���.���.���.���.���.���.���.���.���.. P.fernandezi 3���. Forewing without small brown marks on the base of most radial crossveins (Fig. 9b); mid tibia mostly yellow with dark brown marks (Fig. 9d); male parameres dorsally enlarged (forming a dome) (Fig. 10b) and with apex not sclerotized; female pregenital plate large and ventrally extended (Fig. 10f)������.���.���.. P. rafaeli sp. n. 4. Pronotum with several elongate white setae at lateral margin, at least subequal in length to those on forecoxa; mid tibia mostly dark brown, with few yellow areas; male mediuncus absent and paramere not folding apically ������.���.���.���. P. tibialis 4���. Pronotum with few elongate white setae at lateral margin, shorter than those on forecoxa; mid tibia yellow with small rounded dark marks on the base of the long setae (Fig. 7b); male mediuncus present and paramere folding apically (Fig. 8d)������.���.���.���.���.���.���.���.���.���.���.���.���.���.���.���.. P. limeirai sp. n. 5. Forewing with posterior Banksian line clearly evident; hind wing with a longitudinal apical brown mark (Fig. 6)������.���.���.���.���.���.���.���.���.���.���.���.���.. P.nebulosus 5���. Forewing posterior Banksian line not evident; hind wing without a longitudinal apical brown mark (Fig. 3) ������.���.���.���.���.���.���.���.���.���.���.���.���.���.���..6 6. Area between antennae yellow (Fig. 2a); forefemur set with some short black setae; male ectoproct with postventral lobe (Fig. 3)������.���.���.���.���.���.���.���.. P. cautus 6���. Area between antennae dark brown; forefemur covered with many medium sized black or white setae; male ectoproct without postventral lobe ������.���.���.���.���..7 7. Pronotum with several elongate white setae at lateral margin, at least subequal in length to those on forecoxa; male paramere with apex without a concave excavation������.���.���.���.���.���.���.���.���.���.���.���.���.���.���.���.���..��� P. andinus 7���. Pronotum without elongate white setae at lateral margin, sometimes one or two moderately long white setae; male paramere with an apical concave excavation������.���.���.���.���.���.���.���.���.���.���.���.���.���.���.���.������.. P. clavatus

Published as part of Machado, Renato Jose Pires & Tavares, Leon Gustavo de Miranda, 2020, Notes on the Brazilian species of Purenleon Stange (Neuroptera: Myrmeleontidae), with description of two new species, pp. 62-80 in Insect Systematics & Evolution 51 (1) on page 78, DOI: 10.1163/1876312X-00002200, http://zenodo.org/record/3786701