Eriolus acutipennis Saussure et Pictet, 1898

Piotr Naskrecki, 2000, Katydids of Costa Rica / Vol. 1, Systematics and bioacoustics of the cone-head katydids (Orthoptera: Tettigoniidae: Conocephalinae sensu lato)., Philadelphia, PA: The Orthopterists Society at the Academy of Natural Sciences of Philadelphia, : 113

Eriolus acutipennis Saussure et Pictet, 1898

Figs. 32 E-G, Map 16

1898 Saussure and Pictet, Biol. Centr. Amer. Orth. 1: 384; type locality: Panama, Bugaba, 800-1500 ft.; type depository: The Natural History Museum, London – holotype female.

1999 Naskrecki and Otte, Illustr. Cat. Orthop. I (CD ROM) >> holotype illustrated

Diagnostic description.— Body small, with wings in both sexes extending beyond apices of hind femora by less than 1/3 of their length. Fastigium of vertex small, blunt, about as long as eye diameter. Prosternum unarmed. Male stridulatory file and left stridulatory area damaged in the only available male specimen; mirror approximately rectangular, with rounded corners. Tenth tergite in both sexes with two small, roughly triangular lobes; male cercus straight, slightly thickened subapically, with small sub-basal tooth internally ( Fig. 32 E); female cercus simple, elongately conical, somewhat curved. Male titillators elongate, flattened, with subapical, round dilatations, apices truncated ( Fig. 32 G). Male subgenital plate with deep, rectangular incision, resulting in styli being situated on long, widely separated lobes; styli long and thin; female subgenital plate wider than long, with minute, triangular lobe on its hind margin. Ovipositor short, sickle-shaped, about as long as half of hind femur (ratio ovipositor/hind femur 0.53) ( Fig. 32 F).

Coloration.— General coloration light green; clypeus and mandibles green; pronotum in both sexes with two thin, yellow stripes on dorsal edges of pronotum; posterior edge of metazona in male with two small, brown, rectangular markings.

Measurements.— Table 23 .

Distribution.— This species is known only from the southernmost portion of Puntarenas Prov. ( Map 16 ) and adjacent areas of Panama (Bugaba).

Material examined.— COSTA RICA: Puntarenas Prov., Las Alturas, 15 July - 15 August 1991 (coll. J. Doubles) - 1 female ( UMMZ); Valle de Coto Brus, Las Cruces, Wilson Botanical Gardens, elev. 700 - 1000 m, 1 - 6 December 1995 (coll. P. Naskrecki) - 1 male ( ANSP); PANAMA: Bugaba, 800-1500 ft., Champion – 1 female (holotype) ( BMNH).

Figures

FIG. 32. Costa Rican species of Eriolus. A-D. E. penicillus: A. male cerci, dorsal view, B. ovipositor, C. epiphallus, posterior view, D. epiphallus, lateral view, E-G. E. acutipennis: E. male cerci, dorsal view, F. ovipositor, G. titillators.

MAPS 13 - 18. Distribution of species of Conocephalinae s. l. in Costa Rica. 13. Sphyrometopa femorata, S. atlantica, Eppia truncatipennis, 14. Erioloides longipennis, E. macrocephalus, E. longinoi, E. brevipennis, 15. Erioloides, consobrinus, E. acutidentis, E. latiscobinus, E. sikesi, 16. Eriolus aculeus, E. acutipennis, E. duplidentis, E. penicillus, 17. Subria sylvestris, S. crassicerca, S. scutellaris, 18. Podacanthophorus alas, P. nelciae, P. vargasi, P. maylinae.