Showing papers on "Vespoidea published in 1992"
DOI•
31 Dec 1992
TL;DR: A revision of the Palaearctic members of the ant subgenus Lasius s.str.
Abstract: A revision of the Palaearctic members of the ant subgenus Lasius s.str. is presented the fundamentals of which are application of Numeric Morphology-Based Alpha-Taxonomy (NUMOBAT), investigation of type specimens of 58 taxa, critical evaluation of original descriptions of further 22 taxa, and decision-making based on the GAGE species concept. Excluding nomina nuda and unavailable names, 80 taxa are considered which divide into 56 recognized good species (with 16 of these described here as new), 12 junior synonyms, 11 incertae sedis, and one name representing a F1 hybrid. Eighteen phenotypic characters – seven shape, eight seta and two pubescence characters as well as absolute size – were recorded numerically in 4900 worker individuals originating from 1722 nest or spot samples. The subdivision of the subgenera Lasius s.str. Ruzsky 1913, Cautolasius Wilson 1955, Dendrolasius Ruzsky 1913, Chthonolasius Ruzsky 1913 and Austrolasius Faber 1967 is clearly confirmed by morphological data with each of the 99 recognized Palaearctic species being unambiguously assignable to either subgenus. A key to the 56 Palaearctic species of Lasius s.str., subdivided into five geographic regions, is presented. All species are depicted as z-stack photos in two standard positions. The new species Lasius precursor sp. nov. is proposed as a model for transition from a largely monogynousmonodomous social type (exemplified by the sister species Lasius turcicus Santschi 1921) to a supercolonial type (exemplified by the closely related species Lasius neglectus Van Loon et al. 1990).
119 citations
TL;DR: The contrasting behavior of G. ingeborgae with these two prey taxa is described, and a crude substitution experiment suggests that the cyanide system, perhaps acting through it biochemical concomitants, serves as the major kairomone directing this ant’s hunting behavior.
Abstract: Gnamptogenys lineolata from Republica Dominicana and G ingeborgae from Cis-Andean Colombia are described as new. The latter species was found on one occasion associated with the body rings of a small millipede, and observations of this ant in a laboratory artificial nest in the U. S. showed that it would hunt, kill, and provision its nest with a local polydesmid defended by a hydrogen cyanide-benzaldehyde-phenol allomone combination, but rejected julid quinone-defended millipedes. The contrasting behavior of G. ingeborgae with these two prey taxa is described, and a crude substitution experiment suggests that the cyanide system, perhaps acting through it biochemical concomitants, serves as the major kairomone directing this ant’s hunting behavior.
19 citations
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11 citations
TL;DR: A study of the ants collected in and around Victoria and on Thetis Island during the Autumn of 1987 and the Spring of 1988 is described.
Abstract: A study of the ants collected in and around Victoria and on Thetis Island during the Autumn of 1987 and the Spring of 1988 is described. Twenty-four species were found, and the locations and habitats have been noted. Two of the Leptothorax species are believed to be new records for Canada and another remains unidentified. Some myrmecophiles were also recorded.
8 citations
7 citations
Journal Article•
4 citations
TL;DR: The following abbreviations are used for measurements and ratios: head length, Weber’s length, petiole length, and gastral length.
Abstract: The following abbreviations are used for measurements and ratios. CI Cephalic index: (HW/HL) (100) EL Eye length: maximum eye length (diameter) HL Head length\" with head in full frontal view, maximum measurable distance between upper margin of vertex and lower margin of clypeus. HWHead width\" maximum measurable head width, in frontal view, excluding eyes. IGRIndex of gastral reflection\" length of gastral sternum 2/length of gastral tergum 2 (Ward, 1988) SI Scape index: (SL/HL) (100) SL Scape length: length of scape shaft, exclusive of basal condyle. TL Total length\" combined head length, Weber’s length, petiole length, and gastral length. WL Weber’s length\" diagonal length of mesosoma from pronotal slope to distal edge of propodeal lamellae.
3 citations
TL;DR: The alate-queen based Rhoptromyrmex rawlinsoni sp.
Abstract: Taylor, R.W., 1992. Rhoptromyrmex rawlinsoni sp. nov., a new apparently workerless parasitic ant from Anak Krakatau, Indonesia (Hymenoptera: Formicidae: Myrmicinae). Memoirs of the Museum of Victoria 53: 125-128. The alate-queen based Rhoptromyrmex rawlinsoni sp. nov. (Anak Krakatau I., Indonesia) is described and illustrated. It is presumed on morphological grounds to be a workerless parasite in the nests of another, unknown, ant species.