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First record of Micromus variegatus (Fabricius) (Neuroptera:Hemerobiidae), an accidentally introduced Palearctic species, inthe United StatesAuthor(s): James B. Johnson and Malcolm M. FurnissSource: Pan-Pacific Entomologist, 87(4):294-296. 2011.Published By: Pacific Coast Entomological SocietyDOI: http://dx.doi.org/10.3956/2011-18.1URL: http://www.bioone.org/doi/full/10.3956/2011-18.1

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Scientific Note

First record of Micromus variegatus (Fabricius) (Neuroptera:Hemerobiidae), an accidentally introduced Palearctic species, in the

United States

One specimen of Micromus variegatus (Fabricius 1793) (Neuroptera: Hemerobii-

dae) was collected in the city of Moscow in northern Idaho. The specimen data are:

U.S.A.: Idaho: Latah Co.: Moscow, elev. 840 m, 8 August 2010, M. M. Furniss. The

specimen was found on the wall of a house in an area with diverse vegetation,

including coniferous and deciduous trees, shrubs and herbaceous species that

support a diversity of potential prey. The specimen was initially recognized on the

basis its distinctive wing markings (Fig. 1). Its identity was confirmed using

identification keys (Aspock et al. 1980) and by comparison with authoritatively

determined material from Europe. The specimen is deposited in the William F. Barr

Entomology Museum at the University of Idaho.

This is the first reported specimen of M. variegatus from the United States. The

species was first reported in North America in British Columbia, Canada

(Klimaszewski & Kevan 1988). Those authors suggested that the species was

introduced from Japan. It is now reported from five localities in southern BC

(Scudder & Cannings 2009). Micromus variegatus is also known in eastern Canada

with 14 specimens from Saint-Laurent-de-Ile-d Orleans, Quebec (Klimaszewski et al.

2009). That population is believed to be the result of an independent introduction

from the British Isles or Western Europe.

The discovery of M. variegatus in Idaho, approximately 480 km from the nearest

known site in Penticton, BC, and 700 km from the original North American

collection on Galiano Island near Victoria, BC, provides additional documentation

of the establishment and spread of this species in North America. Its broad

geographical and ecological distribution in Eurasia, from the British Isles through

Iran and other arid areas in the Middle East to Japan (Aspock et al. 1980, Aspock et

al. 2001), suggests that it could ultimately become widespread in North America. Its

impact on native lacewing populations, especially native species of Micromus, should

be monitored if M. variegatus increases in abundance.

We thank John Oswald for his assistance in locating the relevant literature and

reviewing the manuscript, Sean McCann, Simon Fraser University, Burnaby, BC,

Canada, for the use of his photograph, and Subject Editor Eric Benbow for helpful

comments.

James B. Johnson1 , Malcolm M. Furniss, Department of Plant, Soil, and

Entomological Sciences, University of Idaho, Moscow, Idaho 83844-2339

1Corresponding author, email djohnson@uidaho.edu

THE PAN-PACIFIC ENTOMOLOGIST87(4):294–296, (2012)

Figure 1. Micromus variegatus. Photograph courtesy of Sean McCann.

2012 SCIENTIFIC NOTE 295

LITERATURE CITED

Aspock, H., U. Aspock & H. Holzel. 1980. Die Neuropteren Europas. Eine zusammenfassendeDarstellung, der Systematik, Okologie und Chorololgie der Neuropteroidea (Megaloptera,Raphidioptera, Planipennia) Europas. Goecke & Evers, Krefeld 1:1–495, 2:1–355.

Aspock, H., H. Holzel & U. Aspock. 2001. Kommentierter Katalog der Neuropterida (Insecta:Raphidioptera, Megaloptera, Neuroptera) der Westpalaarktis. Denisia 2:1–606.

Klimaszewski, J. & D. K. M. Kevan. 1988. The brown lacewing flies of Canada and Alaska(Neuroptera: Hemerobiidae). Part III. The genus Micromus Rambur. Giornale Italiano diEntomologia 19:31–76.

Klimaszewski, J., L. LeSage & K. Savard. 2009. First record of the adventive species Micromusvariegatus (Fabricius) from eastern Canada (Neuroptera: Hemerobiidae). ZooKeys 27:1–6.

Scudder, G. G. E. & R. A. Cannings. 2009. A checklist of the neuropterid insects of BritishColumbia (Insects: Megaloptera, Neuroptera and Raphidioptera) with a summary of theirgeographic distribution. Journal of the Entomological Society of British Columbia 106:17–23.

Received 23 May 2011; Accepted 24 Oct 2011 by M. E. Benbow; Publication date 23Mar 2012.

296 THE PAN-PACIFIC ENTOMOLOGIST Vol. 87(4)