Cardiac-glycosides
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Danaus eresimus
Soldier, Tropical Queen
Danaus eresimus, commonly known as the Soldier or Tropical Queen, is a butterfly in the family Nymphalidae distributed across North America, the Caribbean, and South America. It is a milkweed butterfly that sequesters cardiac glycosides from host plants for chemical defense. The species is closely related to the Monarch and Queen butterflies, sharing similar orange and black coloration but distinguished by specific wing pattern details. It has been documented utilizing multiple Apocynaceae species as larval hosts, including a recently recorded association with Telminostelma foetidum in Oaxaca, Mexico.
Euchaetes elegans
Elegant Pygarctia, Elegant Tussock Moth
Euchaetes elegans is a moth in the family Erebidae, subfamily Arctiinae, first described by Richard Harper Stretch in 1874. It ranges across the southwestern United States and extends south through Mexico to Colombia. Adults are active during summer months, with flight activity recorded from July through September. The larvae feed exclusively on Asclepias species (milkweeds), sequestering cardiac glycosides for chemical defense.
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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