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The nocturnal bee genus Megaloptidia (Hymenoptera: Halictidae)

Published in Journal of Hymenoptera Research, in 1998, in volume 7, pages 1-14

Species richness of Costa Rican Cenocoeliini (Hymenoptera: Braconidae): a latitudinal and altitudinal search for anomalous diversity

Published in Journal of Hymenoptera Research., in 1998, in volume 7, pages 15-24

Sperm Development in the Imaginal Testes of Aleiodes coxalis (Hymenoptera: Braconidae: Rogadinae)

Published in Journal of Hymenoptera Research, in 1998, in volume 7, pages 25-37

Revision of the American Tiphiid genus Quemaya Pate (Hymenoptera: Tiphiidae: Brachycistidinae)

Published in Journal of Hymenoptera Research., in 1998, in volume 7, pages 38-47

Parasitism of Siphoninus phillyreae (Homoptera: Aleyrodidae) by aphelinid parasitoids at different locations in Egypt

Published in Journal of Hymenoptera Research, in 1998, in volume 7, pages 57-61

Revision of North American Aleiodes (Part 2): the apicalis species-group in the New World

Published in Journal of Hymenoptera Research, in 1998, in volume 7, pages 62-73

Territoriality and Mating Behavior of Sphex pensylvanicus L (Hymenoptera: Sphecidae)

Published in Journal of Hymenoptera Research, in 1998, in volume 7, pages 74-83

The effects of cavity diameter and length on the nesting biology of Osmia lignaria propinqua Cresson (Hymenoptera: Megachilidae)

Published in Journal of Hymenoptera Research, in 1998, in volume 7, pages 84-93

A new species of the Baltic amber bee genus Electrapis (Hymenoptera: Apidae)

Published in Journal of Hymenoptera Research, in 1998, in volume 7, pages 94-101

First chromosome record for the family Dryinidae: the karyotype of Anteon brevicorne Dalman (Hymenoptera: Chrysidoidea)

Published in Journal of Hymenoptera Research, in 1998, in volume 7, pages 116-117

A putative pheromone gland associated modification of the hind tibia in Vipio moneilemae (Hymenoptera: Braconidae: Braconinae)

Published in Journal of Hymenoptera Research, in 1998, in volume 7, pages 118-121

A new species of Ibalia from Borneo, and revised phylogeny and historical biogeography of Ibaliidae (Hymenoptera: Cynipoidea)

Published in Journal of Hymenoptera Research, in 1998, in volume 7, pages 149-156

Taxonomy, mature larva, and biology of Gnamptopelta obsidianator (Brullé) (Hymenoptera: Ichneumonidae, Ichneumoninae)

Published in Journal of Hymenoptera Research, in 1998, in volume 7, pages 157-164

The Nesting Behavior and Dynamics of Bicyrtes angulata (F Smith) with a Comparison to other Species in the Genus (Hymenoptera: Sphecidae)

Published in Journal of Hymenoptera Research, in 1998, in volume 7, pages 165-177

Sexual dimorphism of wasp antennal structure in relation to parasitic and non-parasitic behavior (Hymenoptera: Sphecidae)

Published in Journal of Hymenoptera Research, in 1998, in volume 7, pages 178-181

Systematics of Costa Rican Meteorus (Hymenoptera: Braconidae: Meteorinae) species lacking a dorsope

Published in Journal of Hymenoptera Research., in 1998, in volume 7, pages 182-208

Worker Versus Sexual, and Sex Ratio Investments in the Social Wasp Vespula vulgaris (L) (Hymenoptera: Vespinae) in England

Published in Journal of Hymenoptera Research, in 1998, in volume 7, pages 257-267

Response of Glyptapanteles militaris (Walsh) (Hymenoptera: Braconidae), a Larval Parasitoid of the Armyworm, Mythimna unipuncta (Haworth) (Lepidoptera: Noctuidae), to Different Temperatures

Published in Journal of Hymenoptera Research, in 1998, in volume 7, pages 268-273

Response of Pithecellobium tortum Martius (Leguminosae) Seeds to the Attack of the Phytophagous Braconid AUorhogas dyspistus Marsh (Hymenoptera: Braconidae)

Published in Journal of Hymenoptera Research, in 1998, in volume 7, pages 274-279

Priscomasaris namibiensis Gess, a new genus and species of Masarinae (Hymenoptera: Vespidae) from Namibia, southern Africa, with a discussion of its position within the subfamily

Published in Journal of Hymenoptera Research, in 1998, in volume 7, pages 296-304

Geographic variation of sex ratio in Pelecinus polyturator (Drury) (Hymenoptera: Pelecinidae)

Published in Journal of Hymenoptera Research, in 1998, in volume 7, issue 1, pages 48-56

Neotropical Eucoilidae (Cynipoidea) associated with fruit-infesting Tephritidae, with new records from Argentina, Bolivia and Costa Rica

Published in Journal of Hymenoptera Research, in 1998, in volume 7, issue 1, pages 102-115

A note on the mating behavior of Anoplius amethystinus Fabricius (Hymenoptera: Pompilidae)

Published in Journal of Hymenoptera Research, in 1998, in volume 7, issue 1, pages 122-123

Book Review. Annotated Keys to the Genera of Nearctic Chalcidoidea (Hymenoptera). Gary A. P. Gibson, John T. Huber and James B. Woolley (eds.). NRC Research Press, Ottawa, 1997, xi + 794 p.

Published in Journal of Hymenoptera Research, in 1998, in volume 7, issue 1, pages 124-126

A revision of the philomastigine sawflies of the world (Hymenoptera: Pergidae)

Published in Journal of Hymenoptera Research, in 1998, in volume 7, issue 2, pages 127-148

The species of Asaphes Walker from America north of Mexico, with remarks on extralimital distributions and taxa (Hymenoptera: Chalcidoidea, Pteromalidae)

Published in Journal of Hymenoptera Research, in 1998, in volume 7, issue 2, pages 209-256

Morphological caste differences in the Neotropical swarm-founding polistine wasps IV: Pseudopolybia vespiceps, with preliminary considerations on the role of intermediate females in the social organization of the Epiponini (Hymenoptera, Vespidae)

Published in Journal of Hymenoptera Research, in 1998, in volume 7, issue 2, pages 280-295