Oecanthus quadripunctatus

Identification relies on examination of markings on the first two antennal segments at the base. Distinguished from other Oecanthus species by specific spot patterns on these segments: O. quadripunctatus has four spots (two on each of the first two segments), whereas O. nigricornis has black antennae with white tips, O. argentinus has different antennal markings, O. californicus and O. fultoni have distinct spot arrangements. Examination requires magnification due to small size of diagnostic features. Males can be distinguished from females by their expanded, paddle-shaped forewings.

Small, slender cricket with elongated antennae. Body length approximately 20 mm maximum. Males have expanded, paddle-shaped forewings modified for sound production with intricate venation patterns. Females have slender forewings hugging the body tightly and a short, stout ovipositor visible at the abdomen tip. Diagnostic markings occur on the first two segments at the base of the antennae.

Found in grassy fields, meadows, and tall weeds. Occurs in vegetation ranging from ground level to shrubs. In Colorado, documented in habitats including yucca stands and weedy areas. Less strictly arboreal than some tree cricket species.

North America. Documented in United States: Alabama, Arizona, Arkansas, California, Colorado. Presence in Colorado confirmed among five Oecanthus species in the state.

Adults active late summer through early fall. In Colorado Front Range, peak activity observed in September.

Omnivorous, feeding on plants and small insects such as aphids.

Eggs inserted into berry canes and other plant stems using the female's ovipositor. Developmental stages and overwintering mode not documented in available sources.

Males sing to attract females, lifting forewings to 90-degree angle in heart-shaped posture. Some males align wings with gaps in foliage or chew holes in leaves to reduce acoustic interference and intensify calls. Upon female approach, males switch to softer orientation song and expose the metanotal gland on the thorax; females feed on glandular secretion during mating. This secretion serves as distraction while male transfers spermatophore. Female feeds on secretion for several minutes post-mating.

Predator of small insects including aphids; also functions as herbivore. Serves as prey for larger invertebrates and vertebrates. Male songs contribute to acoustic environment of grassland and meadow habitats.

Subject of citizen science and bioacoustic research. Not documented as agricultural pest. Provides accessible introduction to cricket biology and acoustic communication for naturalists.

• Oecanthus nigricornisBlack-horned tree cricket; distinguished by black antennae with white tips versus four spots on antennal segments
• Oecanthus argentinusPrairie tree cricket; differs in antennal markings and habitat preference
• Oecanthus californicusWestern tree cricket; distinct antennal spot pattern
• Oecanthus fultoniSnowy tree cricket; distinct antennal spot pattern

• tree cricket
• stridulation
• acoustic communication
• courtship feeding
• North America

• BugGuide
• Wikipedia
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy
• Catalogue of Life
• Grasshoppers of Colorado
• Grasshoppers of Colorado
• Grasshoppers of Colorado
• Grasshoppers of Colorado
• Bug Eric: Tree Cricket Courtship
• Tucuras, langostas, y saltamontes | Beetles In The Bush