Bioacoustics of Gymnogryllus odonopetalus

Diagnosis. Male. Bottom of rostrum truncated slightly inward. Epistomal suture slightly wide and distinctly curved upward. Distal edge of labrum narrow and straight. Lateral ocelli a little large, oval and flat. Occiput somewhat narrower than anterior pronotum. Pronotum slightly parallel-sided. Oblique veins four (three, on covered tegmen, and outermost vein apart from corner), the outermost vein normally close to the corner of stridulatory vein; second vein short and very distant from that corner. Inner side of mirror normally bent (strongly bending on covered tegmen). Crossvein between chord and mirror reaches to a little below the inside corner of mirror. Inner branches of Cu1 at apical field nine, the last vein being very short (eight on covered tegmen and fourth closing to fifth at base). Forewings distinctly reach well beyond the tip of abdomen. Stridulatory file, inside apex apart from hair, with only 58 anvil-like teeth. Hindwings long, obviously reaching beyond the tip of cercus. Genitalia: Median notch between paired lower apical teeth not reaching dorsal edge of epiphallic apex, above it with a lappet slightly inclined inward. Outer edge of paired lower apical teeth with an ear-like boss at median. Coloration. Head and pronotum rufous. Most of hind femur brown. FWs light brown. Occiput uniform rufous. Bottom 1/3 of cheek brown. Frons with inconspicuous angular light patch. Crescent pattern of pronotum distinctly red. Bottom 1/3 part of lateral lobe with a distinct light stripe. Subapex of hind femur with brown dorsal patch.

Diagnosis. Male. Frons normal. Epistomal suture wide and almost straight. Distal edge of labrum slightly concave. Lateral ocelli rounded and slightly convex. Occiput somewhat narrower than anterior pronotum. Pronotum slightly narrowed in front. Oblique veins three, the outermost vein apart from the corner of stridulatory vein. The inner side of mirror strongly bent (same on covered tegmen). The crossvein between the chord and mirror arrives at the inside corner of mirror. Inner branches of Cu1 at apical field eight (seven on covered tegmen). Forewings do not reach the tip of abdomen. Stridulatory file, inside apex distant from hairs, with 55 anvil-like teeth and four angular ones inside. Hindwings short, slightly overreaching the end of abdomen. Genitalia: Median notch between paired lower apical teeth not reaching dorsal edge of epiphallic apex, above it with a lappet; epiphallus very short and distinctly raised dorsally. Coloration. Head and pronotum rufous. The apical half of hind femur brown, remainder yellow brown. FWs light brown. Occiput rufous with inconspicuous wide black stripe. Cheek with bottom 1/3 brown. Frons with a yellow strip across the median ocellus, and an angular yellow patch under the stripe, between them a pair of brown spots. Crescent pattern of pronotum distinctly red. Bottom 1/3 part of lateral lobe with a light stripe which is distinct in front. The subapex of hind femur without any dorsal patch.

Diagnosis. Male. Frons normal. Epistomal suture wide and obviously curved upward. Distal edge of labrum rounded. Lateral ocelli a little large, oval and flat. Occiput obviously wide. Pronotum dilated in front. The lateral lobes almost without pubescence. Oblique veins three, the outermost vein apart from the corner of stridulatory vein. Inner side of mirror bent (slightly bending on covered tegmen). The crossvein between the chord and mirror arrived at the inside corner of mirror. Inner branches of Cu1 at apical field seven (same on covered tegmen). Forewings reaching the tip of abdomen. Stridulatory file, inside apex near the hair, with 61 anvil-like teeth and four angular ones inside. Hindwings long, more or less equal to the length of cercus. Genitalia: Epiphallus naturally split into two parts, median notch also not reaching dorsal edge of epiphallic apex, above it with a lappet. Coloration. Head and pronotum from rufous to dark brown. Apical half of hind femur brown and FWs taupe. Occiput uniform rufous; vertex dark brown. Cheek with bottom 2/3 brown. Frons uniform colored. Crescent pattern of pronotum distinctly red. Bottom half of lateral lobe with a distinct light stripe. Subapex of hind femur with a large yellowish brown patch dorsally.

Diagnosis. Male. Frons normal. Epistomal suture narrow and upwardly arched. Distal edge of labrum narrow and straight. Lateral ocelli rounded and flat. Occiput somewhat narrower than anterior pronotum. Pronotum slightly narrowed in front. Oblique veins three, the outermost vein apart from the corner of stridulatory vein. The inner side of mirror strongly bent (normally bending and upper root of side divided on covered tegmen). The crossvein between the chord and mirror reach to below the inside corner of mirror. Inner branches of Cu1 at apical field seven (eight on covered tegmen), the third vein divided at midlength. Forewings reaching the tip of abdomen. Stridulatory file, inside apex connect with hairs, with 59 anvil-like teeth and two angular ones inside. Hindwings long, obviously extended to apex of cercus. Genitalia: Median notch between paired lower apical teeth not reaching dorsal edge of epiphallic apex, above notch with a curved surface. Coloration. Head, pronotum and most of hind femur blackish brown. FWs brown. Occiput uniform black. Cheek with bottom 1/3 brown. Frons uniform in color. Crescent pattern of pronotum brown. Bottom 1/5 of lateral lobe with light stripe. Subapex of hind femur with dark brown patch dorsally.