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Genus Parabacillus - Short-horn Walkingsticks

Walkingstick - Parabacillus - Parabacillus coloradus - female Parabacillus coloradus - female Parabacillus coloradus - female Pale walkingstick - Parabacillus coloradus - female Walkingstick - Parabacillus Western short-horn walkingstick - Parabacillus hesperus Parabacillus coloradus? - Parabacillus Parabacillus hesperus? - Parabacillus
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Phasmida (Walkingsticks)
Family Heteronemiidae
Genus Parabacillus (Short-horn Walkingsticks)
3 spp., of which 2 in our area(1)
Authors differ in opinion as to whether P. hesperus and P. coloradus represent a single species or two; mostly they have been considered as different. The two differ in distribution, and in proportion of the last abdominal segment of the males (in P. hesperus about as long as wide; in P. coloradus about two times as long as wide). P. hesperus is apparently found in west Texas, southern New Mexico, and west from southern Arizona and southwestern Utah into California and Oregon. P. coloradus occurs northeast of this and north to about South Dakota, Wyoming, and Idaho. The two probably come into contact, and perhaps blend in Texas, New Mexico, Arizona, and Utah.