The Nerthra elongata species-group is composed of seven species, all of which are endemic to Australia. Two new species are described: Nerthra falcatus Cassis and Silveira n.sp. and Nerthra monteithi Cassis and Silveira n.sp. All are described and illustrated. A phylogenetic analysis of the species is given with all relationships fully resolved.

The new stilt bug Hoplinus paulai is described from Minas Gerais, Brazil. Habitus photographs, scanning electron micrographs of selected structures, illustrations of male parameres, and a revised key are provided to help distinguish this species from other members of the genus. New distribution and/or host records are given for Hoplinus scutellatus Henry, Oedalocanthus ornatus Henry, and Xenoloma princeps Harris, and a discussion pertaining to the rediscovered name-bearing type of Neides spinosissimus Signoret, the type species of Hoplinus Stål, is provided.

The genus Plinachtus (Heteroptera: Coreidae: Gonocerini) from Madagascar is revised and two new species are described. A key to the known species is provided, as well as illustrations of antennal segments, pronotum, male genital capsule and dorsal view. Gonocerus madagascariensis Kiritshenko is transferred to the genus Plinachtus and new distributional records are given.

Three genera and 15 species of Vietnamese wasps belonging to the subfamily Vespinae of the family Vespidae are recorded. Among them, one genus and three species are new records for Vietnam, and the record of one species is doubtful.

Polybia selvana, a new species of paper wasp from Costa Rica, is described.

We detail behavior for the queen of the socially parasitic ant Myrmica luteola Kupyanskaya, and describe the worker, queen, and male. In the laboratory, a M. luteola queen actively invaded a nest of Manica yessensis and consistently rubbed against M. yessensis workers. Further, morphological characteristics that often occur in socially parasitic ants, i.e., short tibial spurs and ventral lobes on the petiole and post-petiole, occur in the queen and workers of M. luteola. The queen is also characterized by a small size (smaller than the worker) and greatly reduced propodeal spines. The observed behavior and morphology strongly suggest that Myrmica luteola is a temporary social parasite.

Paraminota is revised and Chabriella Medvedev, 1990 and Schawalleria Medvedev, 1990 are synonymized with Paraminota. Chabriella minuta Medvedev, 1990 is synonymized with Schawalleria lamprosomoides Medvedev, 1990. A new species, P. lauribina from Nepal is described. A key to species of Paraminota and illustrations of all these taxa are provided.

Netechma similis, new species, from Costa Rica, is described and illustrated, and Netechma caesiata (Clarke), new combination, from Venezuela, is redescribed and illustrated. Netechma Razowski belongs to a group of genera in Euliini characterized by one or more sparganothine-like features of the male genitalia, including a spiny transtilla; a long, slender, hooklike uncus; and densely scaled socii. Adults of the two treated species are superficially most similar to species of Icteralaria Razowski, with a forewing that features a broad, dark, medial band on a pale yellow ground color.

This study was conducted to determine if early feeding experience can affect subsequent prey choice in lynx spiderlings (Oxyopes salticus). After emergence from the egg sac, three groups of 10 spiderlings were each fed exclusively for a one-week period on one of three naturally-occurring prey species (crickets): group 1 fed on nymphs of Oecanthus californicus; group 2 (Neobarrettia spinosa); group 3 (Ceuthophilus conicaudus). Following this, they were tested for subsequent prey preference in choice tests conducted in a plastic arena. Each spiderling was presented simultaneously with one individual of each prey species in a randomized design. Spiderlings exhibited a significant first preference for the original diet. Thus, experience with certain foods encountered by newly hatched spiderlings can affect subsequent prey preference in this species.