Oecanthus fultoni

Snowy Tree Cricket

Family: Gryllidae · Class: Insecta · Order: Orthoptera

The Snowy Tree Cricket (Oecanthus fultoni) is a small, pale-colored cricket belonging to the family Gryllidae. Also known as the thermometer cricket, this species exhibits sexual dimorphism typical of tree crickets. Males are generally smaller and more delicate in build, while females are slightly larger and possess a prominent ovipositor. The body coloration ranges from pale green to nearly white, with transparent or translucent wing covers. Adults typically measure 12-17 mm in length, with long, thread-like antennae that often exceed body length. Oecanthus fultoni has a broad distribution across North America, ranging from southern Canada through the United States. The species occurs throughout much of California, particularly in areas with suitable vegetation and moderate climates. Before 1960, this species was incorrectly identified under the name Oecanthus niveus, leading to taxonomic confusion that has since been resolved (iNaturalist). The species inhabits a variety of vegetated environments, including gardens, orchards, shrublands, and forest edges. Snowy tree crickets are typically found on herbaceous plants, shrubs, and low trees where they feed and seek shelter. They prefer areas with dense vegetation that provides both food resources and protection from predators. The species is often associated with broadleaf plants and can be found from sea level to moderate elevations. Snowy tree crickets are primarily nocturnal and are best known for their distinctive chirping calls produced by males during the breeding season. The calling behavior is temperature-dependent, with chirp rates increasing as temperatures rise, earning the species its alternate name of thermometer cricket. Males produce their calls by rubbing specialized wing structures together to attract females. The species feeds on aphids, small insects, and plant material, making them beneficial predators in agricultural and garden settings. Females lay eggs in plant stems or bark crevices using their sword-like ovipositor. The species typically has one generation per year, with adults active from mid-summer through fall. Eggs overwinter and hatch the following spring, with nymphs developing through several molts before reaching maturity. Currently, Oecanthus fultoni does not hold any special conservation status at the federal or state level. The species appears to have stable populations across its range and may actually benefit from human-modified environments such as gardens and agricultural areas. According to NatureServe, the species has a global rank of G5, indicating it is secure globally with no immediate conservation concerns. The adaptability of this species to various habitats and its broad distribution suggest it faces no significant threats at present. However, like many insects, populations may be affected by habitat loss, pesticide use, and climate change, though specific population trend data for this species is limited.

Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, and more.