00821nas a2200121 4500008004100000245012900041210006900170300001200239490000600251520027700257100002300534856014200557 2013 eng d00aReport of Trigoniophthalmus alternatus (Silvestri, 1904) (Insecta: Microcoryphia: Machilidae) in Southern West Virginia, USA0 aReport of Trigoniophthalmus alternatus Silvestri 1904 Insecta Mi a467-4680 v93 a

The introduced jumping bristletail, Trigoniophthalmus alternatus (Silvestri, 1904), is reported from the state of West Virginia, USA, for the first time. This location extends the range of this species 380 km southwest of its nearest previously reported locality.

1 aDe Jong, Grant, D. uhttps://archaeognatha.myspecies.info/content/report-trigoniophthalmus-alternatus-silvestri-1904-insecta-microcoryphia-machilidae-southern01916nas a2200217 4500008004100000245011000041210006900151260000900220300001100229490000900240520120900249653001801458653002801476653001801504653002401522653002601546653003301572100001901605700001501624856005901639 1980 eng d00aSurvey of the Microcoryphia (Insecta) of the northeastern United States and adjacent provinces of Canada.0 aSurvey of the Microcoryphia Insecta of the northeastern United S c1980 a1 - 170 v27013 a

A survey of the Microcoryphia of New York,

New Jersey, and Pennsylvania as well as the New

England states and the Canadian provinces of

New Brunswick, Nova Scotia, and Newfoundland

showed four species present. Petrobius brevistylis

and Trigoniophthalmus alternatus were

probably introduced from Europe on ballast; Pedetontus

saltator, new species, and Machiloides

petauristes, new species, are native. Petrobius

canadensis Paclt, 1969, is synonymized with Petrobius

brevistylis Carpenter, 1913. The presence

of Petrobius maritimus (Leach) in North America

is not confirmed. Machilis variabilis Say, described

from "North America," is not identifiable.

Males were not found among the hundreds of

specimens of North American Trigoniophthalmus

alternatus examined, making a parthenogenetic

mode of reproduction highly likely. Males were

rare in Petrobius brevistylis (approximately 3 percent

of all specimens examined), and were not

discovered among the limited material of the new

species of Pedetontus and Machiloides.

10aArchaeognatha10aMachiloides petauristes10aMicrocoryphia10aPedetontus saltator10aPetrobius brevistylis10aTrigoniophthalmus alternatus1 aWygodzinsky, P1 aSchmidt, K uhttp://digitallibrary.amnh.org/dspace/handle/2246/5387