Eastern Tent Caterpillar

Eastern Tent Caterpillars, Extrafloral Nectaries, and Ants boggs.47 Fri, 04/05/2019 - 18:36
Overwintered eastern tent caterpillar (ETC) (Malacosoma americanum) moth eggs are hatching in southwest Ohio; a sure sign that spring has sprung. As their common name implies, the caterpillars are accomplished tent-makers displaying their silk handiwork in branch forks.
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Joe Boggs
Eastern Tent Cats Hatch boggs.47 Fri, 03/30/2018 - 19:18
Astronomical spring is marked by the vernal equinox. I mark "entomological spring" when overwintered Eastern Tent Caterpillar (ETC) moth eggs hatch. That's why I always collect a few egg masses in late winter and hold them outside (in the shade) so I can monitor for this supernal event. It began happening today at around 12:00 p.m.
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Joe Boggs

Eastern Tent Caterpillars Coming Off Some Nests in S.W. Ohio

The pace of Eastern Tent Caterpillar (ETC) (Malacosoma americanum) development varies widely in southwest Ohio.  However, some caterpillars have reached their final instar stage and are abandoning their highly visible silk nests located in branch forks to go on a crawl-about in search of pupation sites.  Their abandoned nests will remain evident throughout much of the early summer as they gradually disintegrate.

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Joe Boggs

Eastern Tent Cats to Arrive Soon

The accumulated Growing Degree Days (GDD) that predicts eastern tent caterpillar (ETC) (Malacosoma americanum) egg hatch is 92.  Cincinnati has reached 89 GDD meaning that ETC eggs are poised to begin hatching in southwest Ohio.  ETC spends the winter in shiny, blackish-brown egg masses wrapped around twigs on their host plants.  A close examination will reveal that the eggs are encased in a structure that resembles bubble-wrap.

 

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Joe Boggs