Description of a New Species of Slave-making Ant in the \u3ci\u3eFormica Sanguinea\u3c/i\u3e Group (Hymenoptera: Formicidae)

The new species, Formica gynocrates, is described and illustrated from all the castes. This slave-making species is a member of the sanguinea group and is most similar to F. pergandei. The type locality is the E. S. George Reserve, Livingston County, Michigan. Specimens were also examined from North Dakota, Wyoming, and Colorado. A key is provided for the separation of the described North American members of the sanguinea group. The most commonly associated slave species is F. vinculans Wheeler, a member of the neogagates group. It is our opinion that F. vinculans is a valid species and not a synonym of F. neogagates, as has been previously supposed

Explaining the abundance of ants in lowland tropical rainforest canopies

The extraordinary abundance of ants in tropical rainforest canopies has led to speculation that numerous arboreal ant taxa feed principally as “herbivores” of plant and insect exudates. Based on nitrogen (N) isotope ratios of plants, known herbivores, arthropod predators, and ants from Amazonia and Borneo, we find that many arboreal ant species obtain little N through predation and scavenging. Microsymbionts of ants and their hemipteran trophobionts might play key roles in the nutrition of taxa specializing on N-poor exudates. For plants, the combined costs of biotic defenses and herbivory by ants and tended Hemiptera are substantial, and forest losses to insect herbivores vastly exceed current estimates

Notes on some Polistes in the American Museum of Natural History, with descriptions of new North American subspecies (Hymenoptera, Vespidae). American Museum novitates ; no. 1701

9 p. ; 24 cm.Includes bibliographical references (p. 9)

New synonymy in Caribbean ants of the genus Leptothorax (Hymenoptera: Formicidae)

Volume: 88Start Page: 154End Page: 15

Prey stalking Behavior Of A Thomisid Spider, Xysticus californicus Keyserling (Araneae, Thomisidae)

Volume: 94Start Page: 201End Page: 20

The Hylaeus of the Bonin Islands, westernPacific Ocean (Hymenoptera Colletidae)

Volume: 69Start Page: 1End Page: 1

Taxonomic notes on the Myrmecocystus melliger complex (Hymenoptera: Formicidae)

Volume: 170Start Page: 1End Page:

Studies on North American bees of the genus Hylaeus. 4. The subgenera Cephalylaeus, Metziella and Hylaeana (Hymenoptera: Colletidae)

Volume: 144Start Page: 1End Page:

New bees of the genus Hylaeus from Sri Lanka and India (Hymenoptera: Colletidae)

Volume: 328Start Page: 1End Page: 1