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The tribe Acanthaclisini Navas contains 14 described genera which we recognize as valid. We have reared larvae of 8 of these (Acanthaclisis Rambur, Centroclisis Navas, Fadrina Navas, Paranthaclisis Banks, Phanoclisis Banks, Synclisis Navas, Syngenes Kolbe, and Vella Navas). In addition, we have studied preserved larvae from Australia which probably represent the genus Heoclisis Navas. This represents the majority of the taxa, lacking only the small genera Avia Navas, Cosina Navas, Madrasta Navas, Mestressa Navas, and Stiphroneuria Gerstaecker. Studies of these larvae have revealed structural differences, especially of the mandible, which we have employed to provide identification of these genera by means of descriptions, keys, and illustrations. Also, since no modern key exists, we are providing a key to the genera based on adults which will provide some further insight on the generic relationships. Observations on the tribal differences of Myrmeleontidae based on larvae are made with a preliminary key to the known tribes.
A new genus, Dejunaleon Miller and Stange, is described with two new species: Dejunaleon loja Miller and Dejunaleon maculosus Stange (Neuroptera: Myrmeleontidae: Brachynemurini). A key to species is provided as well as distributional data. A description of the larva of Dejunaleon loja is given. A key to genera of the tribe Brachynemurini is provided based on larvae and adults.
Mansell (1983) described two new species and genera of Crocinae from Peru and Bolivia bringing the total number of South American species of this subfamily to five species. However, all five species occur well south of the equator. Recently the authors discovered a sixth species in northern Venezuela greatly extending the northern range of the family in South America. This new species belongs to the genus Moranida Mansell. Both adults and larvae were found and are described here with a key to the species of Crocinae of South America. We also found and reared Moranida peruviensis Mansell from Lambayeque, Peru, and provide this new record. This paper represents contribution No. 645 of the Bureau of Entomology.
Descriptions or diagnoses are given for 36 species of New World Eremoleon including 12 new species:
Eremoleon attenuatus, E. durangoensis, E. jacumba, E. jamaica, E. inca, E. monagas, E. morazani, E. pygmaeus, E. samne, E. tanya, E. tepuyiensis and E. venezolanus. A neotype is designated for Hesperoleon atomarius Navás 1933.
The larvae of 25 species are described and keyed. Keys to the adults and larvae are given, and biological notes are provided. Twenty-five species were reared from larvae found in cave mouths, rock overhangs, or other less common habitats; for example, E. nigribasis were found in deep recesses of mammal burrows, E. gracile were reared from reptile holes in the ground, E. punctipennis were found in beetle frass beneath logs, and E. femoralis in small twig holes or abandoned termite galleries in termite frass. Many new bombyliid and chalcidid parasites are listed.
Nine species of Navasoleon (Neuroptera: Myrmeleontidae: Nemoleontini) are recognized in the present work with the description of seven new species: N. amazonas Stange, N. brasiliensis Miller, N. egeri Stange, N. lithophilus Miller, N. lotti Stange, N. tarsalis Miller, and N. venezolanus Stange. Navasoleon bosqui (Navás) is designated a nomen dubium. A key to the species is provided as well as to the genera of Nemoleontini with closing pretarsal claws. The larvae of two species are described and keyed with biological notes. Biological data presented in Miller and Stange (1985), erroneously attributed to N. bolivianus (Banks), has now been corrected to N. lithophilus. Included in this treatise are 71 color photographs including photos of male and female terminalia, male genitalia, and two species of larvae.
Twenty six species of the genus Purenleon Stange (Neuroptera: Myrmeleontidae: Nemoleontini) are recognized from the New World, of which ten are described as new species: P. oaxacae, P. fernandezi, P. tibialis, P. adamsi, P. andinus, P. apache, P. aztecus, P. cavei, P. farri and P. toltecus. Neotypes are designated for Psammoleon banksi Esben-Petersen 1933 and for Formicaleo inaequalis Navás 1913. The larvae of sixteen species have been reared and are described with data on their biologies. The genus is subdivided into three species groups based mostly on leg structure. The inscriptus group consists of fi ve species, the tibialis group consists of two species and the rest of the species are in the bistictus group. Keys to the species based both on adults and larvae are provided and descriptions given.