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Tamarack Tree Cricket (Oecanthus laricis)
Identification: Length 13-15 mm. Head, pronotum, and legs brown; forewings green (but the green fades in pinned specimens); length of forewings <12 mm.
Habitat: On tamarack in southeastern Michigan and hemlock in northeastern Ohio.
Season: August and September; one generation annually.
Song at 25°C: A continuous trill at 37 p/s; carrier frequency 3.4 kHz.
Song data: See Walker 1963.
Similar species: Pine tree cricket—on pine and balsam fir; length of forewings >12 mm.
More information: genus Oecanthus, subfamily Oecanthinae.
References: Walker 1963.