Bioacoustics of Miogryllae

1. Small size ( 9-12 mm ). Tegmina reduced, without stridulatory apparatus. Tympana of the first pair of legs usually absent, if present, only on one side of the tibia...................................................................... 2 - Medium size ( 15-25 mm ). Tegmina with variable development, generally covering up to the second abdominal tergite or further in males. Stridulatory apparatus present. Tympana of the first pair of tibiae usually present........................... 3 2. Tegmina reaching the second tergite, with parallel longitudinal veins and anal field slightly overlapping, tympana absent. Main lobe of pseudepiphallus notch deep and wide; pseudepiphallic parameres thin; ectophallic sclerite poorly developed; ectophallic fold divided, well-developed, extending through the pseudepiphallic median lophi....................... Kazuemba - Tegmina very reduced, reaching only the first tergite anterior border, never touching, without venation, tympana present at least in females on the outer side of the fore tibia. Main lobe of pseudepiphallus notch narrow and not very deep; pseudepiphallic parameres wide and conical; ectophallic sclerite well-developed and divergent; ectophallic fold undivided, poorly-developed, not extending through the pseudepiphallic median lophi....................................... Mellogryllus n. gen. 3. Tegmina with variable development, generally rectangular. Space between the lateral lophi wide. Pseudepiphallic parameres with their postero-apical parts long (strongly projected beyond the posteromedial margin of pseudepiphallus). Ectophallic fold noticeably protruding between lateral lophi, spine-shaped..................................................... 4 - Tegmina ovoid. Space between lateral lophi moderately narrow. Pseudepiphallic parameres with their postero-apical parts not projected beyond the posteromedial margin of pseudepiphallus. Ectophallic fold not protruded between the lateral lophi.................................................................................................. Gryllita 4. Pseudepiphallic parameres with denticulations at apex; ectophallic apodeme divergent, rami with thicky apexes, forming two very close masses, but not merging............................................................. Faguagryllus - Pseudepiphallic parameres with smooth apex; ectophallic apodeme convergent, rami apexes without modifications.................................................................................................... Miogryllus