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Genus Microcentrum - Angle-wing Katydids

ID please - Microcentrum rhombifolium - female Angle-wing Katydid Nymph - Microcentrum - male M. minus or M. rhombifolium - Microcentrum - female Pterophylla camellifolia ? - Microcentrum katydid - Microcentrum - female Which green Tettigoniidae nymph? - Microcentrum rhombifolium - male Microcentrum - female Katydid nymph?? What species? - Microcentrum
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Orthoptera (Grasshoppers, Crickets, Katydids)
Suborder Ensifera (Long-horned Orthoptera)
Infraorder Tettigoniidea (Katydids, Camel Crickets, and relatives)
Family Tettigoniidae (Katydids)
Subfamily Phaneropterinae (Phaneropterine Katydids)
Genus Microcentrum (Angle-wing Katydids)
Synonyms and other taxonomic changes
Microcentrum Scudder, 1862
Numbers
Checklist of Katydids North of Mexico lists 6 spp. (only M. rhombifolium and M. retinerve widespread)
34 spp. total(1)
Identification
The two most common and widespread species are distinguished by the presence/absence of a "pronotal tooth" at the front of the pronotum:

M. rhombifolium

M. retinerve
Range
e. & so. US; New World genus, most spp. Neotropical(1)
Life Cycle
Click on this image to see photos of eggs and a nymph:
See Also
Amblycorypha - Round-headed Katydids
Scudderia - Scudder's Bush Katydids