Key to species of Titanochrysa Sosa & Freitas gen. nov. 1 Microtholi absent from S2–8; forewing with membrane surrounding crossveins (except costal crossveins) infuscate; mandibles symmetrical; male: dorsal rods of arcessus X-shaped, membrane beneath arcessus with two lines of setae mesally........................................................ Titanochrysa circumfusa (Burmeister, 1839) comb. nov. (Figs. 1–4) 1’ Microtholi present on S2–8; membrane around crossveins with or without infuscate markings; mandibles symmetrical or asymmetrical; males: dorsal rods of arcessus parallel, membrane beneath arcessus with or without two lines of setae mesally 2 2 Forewing membrane entirely without shading; mandibles symmetrical; male: membrane beneath arcessus with two lines of small setae mesally................................ Titanochrysa trespuntensis Sosa & Freitas sp. nov (Figs. 13–16) 2’ Forewing membrane surrounding inner gradates with infuscation; mandibles asymmetrical; male: membrane below arcessus without small setae mesally.............................................................................. 3 3 Forewing with network of short, dark, reticulate veins covered by a black spot on medial area; male: arcessus with dorsal rods short, merging apically; female: seventh sternite 3.5 times longer than wide...................................................................................... Titanochrysa pseudovaricosa (Penny, 1998) comb. nov. (Figs. 5–8) 3’ Forewing with membrane around inner gradates infuscate, but without reticulate network of veins; male: arcessus with sclerotized dorsal rods long, merging basally; female: seventh sternite 2.4 times longer than wide.................................................................................. Titanochrysa ferreirai Sosa & Freitas sp. nov. (Figs 9–12)

Published as part of Sosa, Francisco & Freitas, Sergio De, 2012, A new genus of Neotropical Chrysopini (Neuroptera: Chrysopidae), pp. 1-14 in Zootaxa 3351 on page 17, DOI: 10.5281/zenodo.210667