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Pompiliodon gen. nov. and its type species Pompiliodon katina sp. nov. are described and illustrated. The relationships to related genera (Priochilus Banks, 1944 and Balboana Banks, 1925) are discussed.

Phylogenetic studies addressing relationships among chrysidid wasps have been limited. There are no hypotheses proposed for the Neotropical lineages of Chrysidini other than the classic cladogram published in the 1990s by Kimsey and Bohart. Herein we present a cladistic analysis based on 64 morphological characters coded for 54 species of Chrysidini, 32 of them being Ipsiura and 22 representing Caenochrysis, Chrysis, Exochrysis, Gaullea, Neochrysis, and Pleurochrysis. The species of Ipsiura were recovered as monophyletic and as the sister clade of Neochrysis in all most parsimonious trees. We discuss the high plasticity of some morphological characters as evidenced by their high homoplasy in the phylogenetic results, and we clarify the main morphological changes inferred on the phylogenetic tree for this genus. The effects of the inferred homoplasy were evaluated under an implied weighting cladistic analysis, and from a probabilistic perspective with Bayesian inference. Those alternative strategies did not alter the general conclusions about the monophyly of Ipsiura or the generic relationships in Chrysidini (changes were noticed in the species-level relationships within certain parts of Ipsiura, where low branch support was common across all approaches). Among the species groups proposed by Linsenmaier (1985), only the marginalis group was recovered as monophyletic. We also evaluated the convoluted biogeographic history of the group. The resulting historical reconstructions indicate a complicated scenario of diversification of these wasps in the Neotropics, and a close association with forested biomes is discussed.

The south Asian genus Cladobethylus Kieffer, 1922, is reviewed, with a key to the species. Five new species are described, one from the island of Borneo (Cl. darlingi), two from Thailand (Cl. densepunctatus and Cl. thailandicus), one from Korea (Cl. koreensis), and one from Sumatra (acehensis).

The pompilid genus Balboana Banks, 1944 is preoccupied by Uvarov, 1939. A new replacement name, Braunilla Wasbauer and Kimsey is proposed and a species checklist included.

The small chrysidid genus Rhadinoscelidia Kimsey, 1988, is reviewed and the new species Rh. chaesonensis sp. n. is described. Peculiar deformations of the head are documented in a large series of one species, Rh. malaysiae Kimsey, 1988, from Thailand.

The species Hedychridium buffingtoni Kimsey & Copeland, sp. n. is described from two male specimens collected in Kasaala, Kenya. They are distinguished from other species of Hedychridium by the strongly transversely carinate metasomal terga II and III, edentate apical rim of tergum III, strongly lobed propodeal tooth, ecarinate frons and darkly pigmented cuspis. Copyright Lynn S. Kimsey, Robert S. Copeland.

The species of the chrysidid genus Ipsiura are reviewed with emphasis on the taxa occurring in Brazil. In the present study 34 Ipsiura species are recognized, diagnosed, and illustrated. Two new species are described here: Ipsiura bohartiana Lucena sp. nov. and I. duckeana Lucena sp. nov., and two others are transferred from Neochrysis to Ipsiura: I. assecia (Linsenmaier, 1997), comb. nov. and I. guayanensis (Linsenmaier, 1997), comb. nov., increasing to 41 the total of valid species in the genus. New diagnoses and redescriptions are provided for 34 species based on study of their types. For the first time, a comparative and illustrated study of male genitalia is presented for the majority of Ipsiura species. Notes on types and depository collections, a revised key for identification of species along with illustrations of diagnostic features, as well as geographical distribution maps are also given.

Three new species of Mahinda are described, bo from Vietnam, borneensis from Malaysian Borneo and sulawesiensis from northern Sulawesi. A key to the three known species is provided including the previously described species, saltator Krombein, 1983.

This biography of the Hungarian/Romanian/Israeli hymenopterist Qabir Argaman (= Carol Nagy) provides a list of his publications (except for newspaper articles) and the new taxa and new replacement names he proposed. Dr. Argaman began his career in Hungary, publishing under the name Carol Nagy. He later moved to Romania and finally moved to Israel, where he assumed the name Qabir Argaman. In total, he published 84 articles on the order Hymenoptera and described 348 new taxa (2 families, 11 subfamilies, 58 tribes, 153 genera or subgenera, and 125 species or subspecies) in 15 families, as well as 1 new species of Scarabaeidae (Coleoptera).

The species of the brachycistidine genus Acanthetropis are reviewed. A key to the species is provided along with distribution maps. One species, A. normalis Malloch, 1926, is relegated to synonymy under A. ae-qualis (Fox, 1899). Copyright Lynn S. Kimsey, Marius S. Wasbauer.

The south Asian amisegine genus Atoposega Krombein, 1957, is reevaluated. Three new species, A. rufithorax, A. striata and A. thailandica are described from Thailand and the previously described species, A. lineata (Krombein, 1957) from Borneo, A. rieki (Krombein, 1957) from Myanmar and A. simulans Kimsey, 1986 from Malaysia are redescribed. The species, A. decorata Kimsey, 1995, was found to lack the generic characters diagnostic for Atoposega. Atoposega is only known from females.

Twelve species of the brachycistidine genus Colocistis Krombein, 1942 are reviewed and two new species, Colocistis chemsaki and C. oaxacana, are described from Baja California and Oaxaca, Mexico respectively. A key to the species and species distribution maps are provided. Copyright Lynn S. Kimsey, Marius S. Wasbauer.

A new genus and species, Megalara garuda is described from Sulawesi (Indonesia). The new species is one the largest known members of the crabronid subfamily Larrinae. It has a unique suite of putatively apomorphic morphological characters and is most closely related to the genus Paraliris. We found indications of a significant allometric variation in body size and mandibular length and shape in male Megalara, and the presence of acarinaria at least in females of the new genus. Allometric variation and acarinaria have previously been shown to occur in Paraliris, which is another indication for a close relationship of Megalara and Paraliris.

The chrysidid genus Loboscelidia is reviewed and 11 new species are described, including Loboscelidia cinnamonea (Borneo), Loboscelidia fulgens (Viet Nam), Loboscelidia fulva (Thailand), Loboscelidia incompleta (India), Loboscelidia kafae (Borneo), Loboscelidia laminata (Viet Nam), Loboscelidia meifungae (Borneo), Loboscelidia nasiformis (Thailand), Loboscelidia nitidula (Thailand), Loboscelidia pecki (Viet Nam), and Loboscelidia sisik (Borneo). A key to males of the species of Loboscelidia is given.