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Title Come and gone: description of a new species of Eucharitidae (Hymenoptera) attacking Solenopsis (Hymenoptera: Formicidae) in Texas.

Authors Chien, I.; Heraty, J. M.

Author Affiliation Department of Entomology, University of California, Riverside, California, USA.

Author Email john.heraty@ucr.edu

Journal Insect Systematics and Diversity 2018 Vol 2 No. 1 pp. ixx012

ISSN 2399-3421


Abstract

Eucharitidae (Hymenoptera: Chalcidoidea) are the only family in which all members are specialized parasitoids of ant brood, with species of Orasema Cameron (Oraseminae) parasitizing several genera of Myrmicinae, including Solenopsis Westwood and Pheidole Westwood (Formicidae). In 1988, a new species of Orasema was discovered in southern Texas attacking the brood of what is recognized as a Solenopsis geminata (Fabricius) (Hymenoptera: Formicidae) × Solenopsis xyloni McCook (Hymenoptera: Formicidae) hybrid. Adults of Orasema oviposit onto the green stems and leaves of Vachellia sp. (Fabaceae). Orasema taii n. sp. was only found attacking the hybrid colonies and was not recovered from adjacent nests of Solenopsis invicta Buren (Hymenoptera: Formicidae), which at that time were equally abundant in the area. Wasps were abundant at the time of collection, but since these initial collections, the parasitoids have not been recovered. Hybrid populations have declined precipitously with the invasion of the imported fire ant, and both the hybrid and parasitoid may have been extirpated at least from the area of discovery. Based on morphological and molecular evidence, O. taii n. sp. is placed into the Orasema bakeri species group. The adult and immature stages and their behavior in the field are described.
Publication type
Journal article

Publisher
Oxford University Press

Year of publication
2018

Location of publication
Cary

Country of publication
USA

Language of publication
English

Language of summary
English

Geographical location
Texas
USA


Record number
20183235876

Organism descriptor
Eucharitidae
Fabaceae
insects
Pheidole
Solenopsis (Hymenoptera)
Solenopsis geminata
Solenopsis invicta
Solenopsis xyloni


Descriptor
arthropod pests
descriptions
genes
insect pests
molecular taxonomy
morphology
morphotaxonomy
natural enemies
new species
nucleotide sequences
parasites
parasitoids
pests
plant pests
social insects
taxonomy


Identifier
DNA sequences
Orasema bakeri
Orasema taii
pest arthropods
pest insects
red imported fire ant
systematics
United States of America
Vachellia


Broad Term
Hymenoptera
insects
Hexapoda
arthropods
invertebrates
animals
eukaryotes
Fabales
eudicots
angiosperms
Spermatophyta
plants
Formicidae
Solenopsis (Hymenoptera)
Great Plains States of USA
USA
APEC countries
Developed Countries
North America
America
OECD Countries
Gulf States of USA
Southern States of USA
Southern Plains States of USA
West South Central States of USA
Southwestern States of USA