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1 April 2013 Establishment of the Palearctic Heterogaster urticae (F.) (Hemiptera: Lygaeoidea: Heterogastridae) in North America, with New British Columbia Records of the Native H. Behrensii (Uhler)
A. G. Wheeler Jr., E. Richard Hoebeke
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Abstract

Stinging nettle (Urtica dioica L.; Urticaceae), a Holarctic perennial herb, is a host plant of two lygaeoids of the family Heterogastridae: Heterogaster urticae (F.) in the Palearctic and H. behrensii (Uhler) in the Nearctic Region. We give the first published North American records (other than port-of-entry interceptions) of H. urticae, based on fieldwork in British Columbia in 2010 and 2011. We also give new distribution records for H. behrensii, a species of special concern in the province; it previously was known in Canada only from one site in British Columbia. Morphological characters are provided to distinguish the species. Both heterogastrids were collected from stinging nettle in British Columbia's Lower Fraser Valley and on Vancouver Island; H. urticae also was taken in the Vancouver Metro Area. The species were syntopic in two nettle colonies. We suggest that the heterogastrids'syntopy provides an opportunity to determine whether the adventive H. urticae might adversely affect the native H. behrensii.

A. G. Wheeler Jr. and E. Richard Hoebeke "Establishment of the Palearctic Heterogaster urticae (F.) (Hemiptera: Lygaeoidea: Heterogastridae) in North America, with New British Columbia Records of the Native H. Behrensii (Uhler)," Proceedings of the Entomological Society of Washington 115(2), 189-196, (1 April 2013). https://doi.org/10.4289/0013-8797.115.2.189
Published: 1 April 2013
JOURNAL ARTICLE
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KEYWORDS
adventive species
Heteroptera
new records
stinging nettle
syntopy
Urtica dioica
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