Dark Blue Quill vs Lesser Cockroach

Side-by-side species comparison

Attribute Dark Blue Quill Lesser Cockroach
Scientific Name Paraleptophlebia mollis Ectobius panzeri
Order Ephemeroptera Blattodea
Family Leptophlebiidae Ectobiidae
Size 6-9 mm 6-9 mm
Habitat Rivers & Streams Heathland
Diet Detritivores Detritivores
Regions North America Europe (Britain to eastern Mediterranean)
Conservation Least Concern Not Evaluated

Dark Blue Quill

A small dusky-winged mayfly of Appalachian headwater streams. Nymphs are slow crawlers among leaf debris in gentle currents.

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Did You Know?

It is one of the earliest mayflies to emerge each spring, sometimes hatching when snow still lines the streambanks.

Lesser Cockroach

A small dark cockroach found in heathlands and open habitats across Europe. It is active during warm summer months.

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Did You Know?

It overwinters as an egg case (ootheca) buried in soil, hatching only when spring temperatures rise.