Northern Rock Crawler vs Common Darter
Side-by-side species comparison
| Attribute | Northern Rock Crawler | Common Darter |
|---|---|---|
| Scientific Name | Grylloblatta campodeiformis | Sympetrum striolatum |
| Order | Grylloblattodea | Odonata |
| Family | Grylloblattidae | Libellulidae |
| Size | 15-30 mm | 35-44 mm body length |
| Habitat | Indoors | Ponds & Lakes |
| Diet | Omnivores | Omnivores |
| Regions | North America | Western Europe, Central Europe, Southern Europe, Northern Europe |
| Conservation | Near Threatened | Least Concern |
Northern Rock Crawler
A rare ice-dwelling insect that lives on glaciers and snowfields at near-freezing temperatures. Handling one with bare hands can overheat and kill it.
Did You Know?
Rock crawlers are so cold-adapted that a human hand is hot enough to kill them — they prefer temperatures between 1-4C and die above 20C.
Common Darter
Europe's most abundant dragonfly, with mature males turning bright orange-red. It is often the last dragonfly flying in autumn, sometimes into November.
Did You Know?
Mating pairs lay eggs by repeatedly dipping the female's abdomen into the water while flying in tandem.