Long-Tailed Mayfly vs Freeze-Tolerant Cockroach

Side-by-side species comparison

Attribute Long-Tailed Mayfly Freeze-Tolerant Cockroach
Scientific Name Palingenia longicauda Periplaneta japonica
Order Ephemeroptera Blattodea
Family Palingeniidae Blattidae
Size 30-40 mm body; 60-80 mm cerci 25-35 mm
Habitat Rivers & Streams Woodlands
Diet Omnivores Omnivores
Regions Europe Asia, North America (invasive)
Conservation Vulnerable Least Concern

Long-Tailed Mayfly

The largest European mayfly with body and cerci reaching over 120 mm. Its spectacular mass hatches on the Tisza River are a famous natural phenomenon.

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Did You Know?

The annual "Tisza bloom" of this mayfly along the Tisza River lasts only a few hours but has been celebrated in Hungarian culture for generations.

Freeze-Tolerant Cockroach

An invasive cockroach from Asia first found in New York City in 2012. Unlike other cockroach species, it can survive outdoors through freezing winters.

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Did You Know?

This is the only cockroach species in New York that can survive the citys harsh winters outdoors — it was first discovered on the High Line elevated park in Manhattan.