Bioacoustics of Eremus

Description. Small to medium sized species ( Figs. 60 A–B). Head: Face ovoid; nearly smooth, finely shagreened; fastigium verticis distinctly wider than scapus; ocelli indistinct; fastigium frontis separated from fastigium verticis by a fine suture; subocular furrows distinct, widening ventrad to a wide depression ( Fig. 61A ). Abdominal tergites two and three each with two rows of very small stridulatory pegs (3, 3–5; 5–6, 4–5; n = 2 males ). Wings reduced to minute pads not reaching hind margin of corresponding notum. Legs: Fore coxa with a spine at fore margin; fore and mid femora unarmed; fore tibiae with 4, mid tibiae with only 3 pairs of ventral spines (in one male first pair completely lacking, in the other male there is a minute spine on external side, on the right legs on both sides) and 1 pair of very small ventral spurs; hind femur with 4–6 external and 3–7 internal spines on ventral margins; hind tibia with spaced spines on both dorsal margins, ventral margins without pre-apical spine; with 3 apical spurs on both sides. Coloration. General color intense dark yellow with black marks; vertex black; pronotum yellow with black rim; legs brownish red with coxa, trochanter and genicular area black; thoracic sternites black; abdominal sternites yellow with black margins except for hind margin which is yellow. Face black with an oval yellow spot on fastigium frontis; clypeus and labrum dark brownish red, margin of clypeus yellow. Male. Eighth abdominal tergite black; prolonged and towards end globular. Ninth abdominal tergite black, together with preceding segment globular; apical margin in middle bent proximad and split forming a small ovoid membranous zone; apex on both sides of midline with a short acute tooth ( Fig. 61B ). Tenth abdominal tergite forming a short black band; sub-interrupted in middle by small epiproct. Epiproct semicircular, in middle with a strongly sclerotised groove with a deeper pit at tip; paraproctes forming large black plates mediad of bases of cerci, and meeting in midline. Eight sternite shorter but wider than preceding sternites with lateral margins up-bent; subgenital plate wider than long, little vaulted in basal area, afterwards little depressed except at both lateral margins, apical margin concave; styli very small, inserted at little projecting lateral angles ( Fig. 61B ). Phallus membranous. Female unknown. Measurements ( 2 males ).—body w/o wings: 22.5–25.0; pronotum: 4.5; tegmen: 0; hind femur: 11.5–12.5; antenna: 90 mm .