Bioacoustics of Teleogryllus (Brachyteleogryllus) rohinae

Description: In addition to the characters of the genus: medium sized cricket very similar to T. occipitalis . Legs. TIII with 5–6 inner and 6–7 outer sub-apical spurs; basitarsomeres III with 3–4 inner and 5–7 outer spines. Color. Body, head and pronotum dark brown ( Fig. 3A–B , 5E & 6D ). Inner margins of eyes with a thick yellow band ( Fig. 10L ), sometimes wide enough to make vertex look yellowish. Male. FW covering the epiproct fully or slightly longer ( Fig. 5E ), HW always longer than abdomen; harp with 3–4 regularly spaced oblique veins with a horizontal middle part (sometimes 1–2 faint veins at the angle of 1 st anal vein) ( Fig. 7E ). Stridulatory file with 235 to 252 teeth (mean 242, n=3); teeth on the stridulatory vein as on Fig. 8C . Mirror longer than wide; apical field with 4–5 cell alignments; lateral field with 12–13 veins ( Fig. 7E ). Male genitalia. Pseudepiphallic sclerite rather square-shaped in dorsal view, posterior margin slightly pointed from the middle, vertex rounded and smooth with convex lateral margins and almost at the level of median structure ( Fig. 10I ). In lateral view: pseudepiphallic sclerite very similar to T. occipitalis and T. emma ; pseudepiphallic apodeme as wide as its base ( Fig. 10J–K ). Female. Body size slightly bigger than males. FWs overlapping 2/3 rd of its width, length restricted up to 7 th abdominal tergite or extended slightly beyond epiproct; dorsal field with 11 diagonally parallel longitudinal veins; lateral field with 11–13 veins ( Fig. 9D ). HWs very long extended beyond the abdomen ( Fig. 6D ). Female genitalia. Copulatory organ sharply tapering anteroposterior and sclerotized posteriorly ( Fig. 11E, F ). Acoustic signal: Calls of T. rohinae consist of two kinds of chirps (long and short) interspersed with each other ( Fig. 12A ). The short chirps are 0.402 ± 0.024s while the longer chirps are more variable with a chirp duration of 0.677 ± 0.331s (mean SD). The short chirps consist of 6.35 0.93 syllables, while the longer chirps consist of 19.5 ± 8.6 syllables per chirp (mean ±SD). While T. rohinae Jaiswara & Jain s p. nov. and T. emma have similar call patterns with long and short calls, they vary in the number of syllables per chirp. Further, the dominant frequency for T. emma has been reported to be 3.7 kHz ( Lu et al . 2018 ), whereas, for T. rohinae , we determined it to be at 5.3 ± 0.16 kHz ( Fig. 12B ).