Vieira Navás is a small genus of Neotropical green lacewings in the tribe Belonopterygini. Here, a fifth species, Vieira flinti sp. nov., is described from Venezuela and Brazil. This species shares significant features with disparate members of the genus; thus the genus as a whole is now known to express a more continuous range of morphological variation than previously recognized. We present a key for identifying Vieira species and new geographic records for previously described species in the genus.

Ungla Navás is a small and relatively unstudied genus of Neotropical Chrysopini (Neuroptera: Chrysopidae: Chrysopinae) from Central and South America. Here, the genus is reported from Venezuela for the first time, and seven new species are described: Ungla demarmelsi sp. nov.; Ungla diazi sp. nov.; Ungla curimaguensis sp. nov.; Ungla martinsi sp. nov.; Ungla nigromaculifrons sp. nov.; Ungla rubricosa sp. nov.; and Ungla yutajensis sp. nov.

The monotypic leucochrysine genus Nuvol was previously known from three specimens of Nuvol umbrosus Navás, collected in the Atlantic Forest region of Brazil. For many years these specimens have been missing, and the genus has remained without a modern description. Here, the species is redescribed based on two newly discovered specimens (females) from the Amazonian region. The female terminalia are relatively simple, except for the subgenitale, which is enlarged, folded into two sections, and heavily sclerotized. Unique aspects of the wing venation and the unusual pattern of banding on the wings support the retention of Nuvol as a valid genus within the Leucochrysini. There are differences between the Amazonian specimens studied here and the earlier descriptions based on specimens from the Atlantic Forest. These differences may indicate the presence of two distinct, geographically separated species within the genus. However, largely because we do not know the sexes of the earlier specimens, we are treating the differences discovered in the two female specimens as expressions of intraspecific variation.

Species of Ceraeochrysa Adams are distributed from southeast Canada to Argentina. Larvae feed on aphids, thrips, white flies, mites, and neonatal larvae of Lepidoptera in varied agroecosystems. Seven species are known in Venezuela, viz. Ceraeochrysa achillea Freitas & Penny, C. angulata (Navás), C. bitacornua Freitas & Penny, C. caligata (Banks), C. cubana (Hagen), C. everes (Banks), and C. valida (Banks). In this study, three species are described as new to science, Ceraeochrysa melaenopareia sp. nov., Ceraeochrysa pittieri sp. nov., and Ceraeochrysa torresi sp. nov.

This taxonomic study includes: (i) a redescription of Leucochrysa (Leucochrysa) nigrilabris (Banks) (♂ and ♀), based on the type specimen and new material and (ii) images of the Leucochrysa (L.) insularis (Walker) type, adult color polymorphism, and genital characters (♂ and ♀). For both species, it provides: (iii) descriptions of the larvae, (iv) biological notes, and (v) geographic records. Using the above information, we compare the two species with each other and with other Leucochrysa (Leucochrysa) species that purportedly are closely related. We conclude: First, the larval features of L. (L.) nigrilabris and L. (L.) insularis coincide with those previously described as characteristic of the genus Leucochrysa and its subgenus Leucochrysa. Second, based on their genitalia (♂ and ♀), larval morphology, and biology (e.g., deposition of eggs in clusters), the two species are distinct, but very closely related. And, third, L. (L.) nigrilabris and L. (L.) insularis share several characteristics with the Leucochrysa (L.) "varia-like" species; these include similar adult color polymorphisms and aspects of their larval morphology. However, their genitalia (♂ and ♀) differ significantly from those of the described L. (L.) "varia-like" species, and thus we consider the two sets of species to be distinct.Resumo O presente estudo taxonômico inclui: (i) redescrição de Leucochrysa (Leucochrysa) nigrilabris (Banks) (♂ e ♀), com base no espécime-tipo e novo material, e (ii) imagens do tipo, polimorfismo de coloração dos adultos e genitália (♂ e ♀) de Leucochrysa (L.) insularis (Walker). Para ambas as espécies, apresentam-se ainda: (iii) descrições das larvas, (iv) informações biológicas e (v) registros geográficos. Tais informações são usadas para comparar as duas espécies entre si e com outras espécies de Leucochrysa (Leucochrysa) que supostamente são proximamente relacionadas. A partir dessas comparações, conclui-se que (1) as características das larvas de L. (L.) nigrilabris e de L. (L.) insularis coincidem com aquelas previamente descritas como típicas do gênero Leucochrysa e de seu subgênero Leucochrysa; (2) com base nas caracterís-ticas da genitália (♂ e ♀), morfologia larval e biologia (por exemplo, deposição de ovos em cachos), as duas espécies são distintas, mas muito proximamente relacionadas, e (3) L. (L.) nigrilabris e L. (L.) insularis compartilham várias caracterís-ticas com Leucochrysa (L.) varia e espécies afins, as quais incluem polimorfismo de coloração no estágio adulto e aspectos da morfologia larval semelhantes. Entretanto, suas genitálias (♂ e ♀) diferem significativamente das de L. (L.) varia e espécies afins descritas, de forma que esses dois conjuntos de espécies são considerados como distintos. ResumenEl presente estudio taxonómico incluye: (i) redescripción de Leucochrysa (Leucochrysa) nigrilabris (Banks) (♂ y ♀), con base en el espécimen tipo y nuevo material y (ii) imágenes del tipo, polimorfismo de coloración de adultos y genitalia (♂ TAUBER ET AL.102 · Zootaxa 3750 (2) © 2013 Magnolia ...