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Species Micromus angulatus

Micromus? - Micromus angulatus Brown Lacewings - Micromus angulatus Brown Lacewing - Micromus angulatus
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Neuroptera (Antlions, Owlflies, Lacewings, Mantidflies and Allies)
Suborder Hemerobiiformia (Lacewings, Mantidflies and Allies)
Family Hemerobiidae (Brown Lacewings)
Genus Micromus
Species angulatus (Micromus angulatus)
boreal NA (NF-YT south to NY-SD)(1); probably naturally Holarctic
To the extent that we can tell, M. angulatus is probably naturally Holarctic. The genus Micromus is subcosmopolitan, with species nearly everywhere, except, interestingly, South America. There are a number of endemic species of Micromus in North America, some of which are in species groups that also have Palearctic members. So, it is not unreasonable to believe that M. angulatus could also be so. It is also a more northerly species, adapted to the colder northern climate. This can be interpreted to support either a natural Holarctic distribution, or a successful introduction of a northern species from the Old World. One might be able differentiate these based on population-level genetic studies, but we don't have any hard data on that. --John Oswald, pers. comm. to =v=
Works Cited
1.Species catalog of the Neuroptera, Megaloptera, and Raphidioptera of America North of Mexico
Penny N.D., Adams P.A., Stange L.A. 1997. Proc. Calif. Acad. Sci. 50: 39-114.