Katydids of Costa Rica / Vol. 1, Systematics and bioacoustics of the cone-head katydids (Orthoptera: Tettigoniidae: Conocephalinae sensu lato). Author Piotr Naskrecki text 2000 The Orthopterists Society at the Academy of Natural Sciences of Philadelphia, Philadelphia, PA book 10.5281/zenodo.270035 647046fe-0ee5-401d-b4f8-aea0355fde7f 270035

TABLE 22. Key for identification of Costa Rican species of Eriolus

Species acutipennis	Male cercus straight, with small sub-basal tooth internally	10th tergite (both sexes) with two small, triangular lobes (Fig. 31 E)	Ovipositor sickle-shaped, as long as half of hind femur (Fig. 31 F)	Male subgenital plate with styli located on widely separated, narrow lobes
aculeus	with large, oblique, apical arm	with two long, thin, parallel lobes (Fig. 29 D)	saber-shaped, as long as 0.7 of hind femur (Fig. 29 A)	with small apical incision and long styli
penicillus	with thin, finger-like subapical spine	with two long, thin, convergent lobes (Fig. 31 A)	saber-shaped, as long as 0.8-0.9 of hind femur (Fig. 31 B)	with small apical incision and long styli
duplidentis	conical, with small, thick basal spine and large protuberance midlength	with shallow, widely triangular incision (Fig. 30 D)	sickle-shaped, as long as half of hind femur (Fig. 30 A)	without styli and with small, triangular apical incision