Crested
Guides
Abacion
Brown Crested Millipedes, Crested Millipedes
Abacion is a genus of large, dark brown crested millipedes in the family Abacionidae, order Callipodida. The genus comprises approximately 10 described species distributed in North America. Members are characterized by prominent dorsal crests on their body segments, a distinctive feature of the group. The genus was established by Rafinesque in 1820 and represents one of the more conspicuous millipede taxa in its range due to its size and crested appearance.
Callipodida
Crested Millipedes
Callipodida is an order of millipedes comprising approximately 130 species across three extant suborders and seven families. Members are characterized by elongated bodies with 40–60 segments, reaching up to 100 mm in length, and often display distinctive dorsal crests or ridges. The order exhibits a disjunct distribution across the Northern Hemisphere, with populations in North America, Europe, western Asia, southern China, and Southeast Asia. Sexual maturity is achieved through teloanamorphosis, with males possessing a single pair of gonopods derived from the seventh leg pair.
Nomotettix cristatus
crested pygmy grasshopper, crested grouse locust, northern crested grouse locust
Nomotettix cristatus is a small pygmy grasshopper in the family Tetrigidae, commonly known as the crested pygmy grasshopper or crested grouse locust. It is one of approximately 35 Nearctic species of Tetrigidae. The species exhibits three recognized subspecies with distinct geographic distributions across North America. Like other members of its family, it is characterized by an elongated pronotum that extends over the abdomen, a trait distinguishing pygmy grasshoppers from typical grasshoppers in Acrididae.
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