Seasonal
Guides
Anthocharis sara
Sara orangetip, Pacific orangetip
Anthocharis sara is a pierid butterfly native to western North America, ranging from Baja California north to extreme southwestern Oregon and east to the Sierra Nevada and western Nevada. It is one of three distinct species in the Sara orangetip complex, separated from A. julia and A. thoosa by >2% mitochondrial DNA COI barcode divergence and morphological characters of immature stages. The species exhibits strong seasonality with two broods annually and has been documented utilizing diverse mustard family host plants.
Operophtera brumata
Winter Moth
Operophtera brumata, the winter moth, is a geometrid moth native to Europe and the Near East that has been introduced to North America. It is notable among temperate Lepidoptera for adult activity during late fall and early winter. Females are flightless, while males are fully winged. The species is a significant pest of deciduous trees and an important food source for birds such as Blue Tits, which feed their young almost exclusively on winter moth caterpillars. The USA National Phenology Network includes this species in its Pheno Forecast program to aid pest management.
Podon
Podon is a genus of marine cladocerans in the family Podonidae, characterized by onychopod morphology. The genus includes at least four described species: P. intermedius, P. leuckarti, P. leuckartii, and P. schmackeri. Members are euryhaline and eurythermal, inhabiting estuarine and coastal marine waters. Populations exhibit strong seasonal dynamics, with spring and fall peaks and summer disappearance in temperate regions.