Giant
Guides
Amblycheila cylindriformis
Great Plains Giant Tiger Beetle
Amblycheila cylindriformis is a flightless tiger beetle native to the Great Plains of North America. It is the largest tiger beetle species in North America, with adults reaching 25–38 mm in length. The species is strictly nocturnal and inhabits grassland environments, where adults walk on bare ground and larvae construct deep burrows in specific soil types.
Amblycheila hoversoni
South Texas giant tiger beetle
Amblycheila hoversoni is a flightless, nocturnal tiger beetle first described in 1990 (published 1991). It holds the distinction of being the largest tiger beetle species in the Western Hemisphere. The species is endemic to south and west-central Texas, where it inhabits grassland and prairie habitats. Like other members of the genus Amblycheila, it exhibits a lumbering, deliberate gait rather than the rapid, jerky movement typical of most tiger beetles.
Anax walsinghami
giant darner, giant green darner
Anax walsinghami is the largest dragonfly species in North America, with a wingspan reaching up to 120 mm and body length of 89–117 mm. Commonly known as the giant darner or giant green darner, this species belongs to the family Aeshnidae and is distributed across Central America and North America. Despite its impressive size, it is exceeded by the closely related giant Hawaiian darner (A. strenuus). The IUCN lists the species as Least Concern with a stable population.
Longistigma caryae
Giant Bark Aphid
Longistigma caryae, commonly known as the giant bark aphid, is the largest aphid species native to the United States. First described in 1841 from pignut hickory in Massachusetts, this species was later placed in its own genus due to its distinctive extremely long, slender stigma that extends around the end of the wing. It feeds on the bark of hickory trees and has been documented across eastern and central North America.
Megaphasma
giant walkingstick
Megaphasma is a genus of giant walkingsticks in the family Diapheromeridae, containing at least two described species. The genus includes Megaphasma denticrus, recognized as the longest insect species in North America, with females reaching 150+ mm in body length. Members of this genus are characterized by their exceptional size, cryptic stick-like appearance, and distinctive morphological features including toothed mesofemora. The genus is primarily distributed in the south-central United States.
Polistes dominula
European Paper Wasp
Polistes dominula is a highly successful invasive social wasp native to Eurasia that has established populations across North America, South America, New Zealand, South Africa, and other regions. First detected in North America near Boston in 1978, it has become one of the most abundant wasps on the continent. The species builds small, exposed paper nests in protected locations and preys primarily on live insects, particularly caterpillars. Unlike yellowjackets, it does not scavenge for meat or sugar. Its rapid spread has been attributed to ecological flexibility, superior competitive ability, and tolerance of human-altered environments.
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