black-faced bush cricket
Orocharis nigrifrons T. Walker 1969

map
male
head
face

11 s of calling song [948KB]; male from Manatee Co., Fla.; 25.2°C. (WTL684-8)
6 s of calling song [260KB]; same as above but truncated and down-sampled.


Sound spectrogram of 2 s of calling at 25.2°C (from WTL684-8). Dominant frequency 4.8 kHz.
Click on spectrogram to hear graphed song.

Identification:  Length 15-18 mm. Ocellar diameter less than distance between lateral and median ocellus; weakly developed projections at ocelli; no bristles longer than 0.1 mm on head behind lateral ocelli. Face entirely black medially. Stridulatory file has 98-110 teeth.

Habitat:  Black mangrove; occasionally other mangroves.

Season:  Perhaps year-round (records are Mar.–Sept.).

Song at 25°C:  Tinkling, melodious trills lasting 1–3 sec. Pulses within trill are paired. Rates are 10 pr/s and (within pairs) 42 p/s.

Similar species:  Keys and three-horned bush crickets (O. diplastes and O. tricornis)—some bristles longer than 0.1 mm on head behind lateral ocelli; stridulatory file with 110–145 teeth.

More information:  subfamily Eneopterinae, genus Orocharis

Nomenclature:  OSF (Orthoptera Species File Online)