Eppia truncatipennis Stål, 1876

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, : 95

Eppia truncatipennis Stål, 1876

Figs. 24 A-E, 48E, 57C-D, Map 13

1876 Stål, Observ. Orth., Bihang Vet.-akad. 3:42; type locality: Panama, Chiriquí; type depository: Naturihistoriska Rijksmuseum, Stockholm – holotype female

Diagnostic description.— General characteristics as described above. Male stridulatory file (n=1) 2 mm long, with 112 teeth, maximum width of teeth 140 μm ( Fig. 48 E).

Measurements (in mm). — (6 males, 7 females; range, avrg±SD) body with wings: male 50.3-57.8, 53.1±2.7, female 53.9-59.9, 56.5±2.1; pronotum: male 8.5-10.2, 9.1±0.6, female 8.9-9.7, 9.3±0.3; tegmen: male 41.8-47.3, 44.1±2, female 45.4-49.8, 47.3±1.6; hind femur: male 24.6-28.2, 26.1±1.2, female 26-29.5, 27.4±1.3; ovipositor: 12.5-15.1, 14±0.9.

Bioacoustics.— The call of E. truncatipennis (based on a specimen from Gamboa, Panama, courtesy of M. Greenfield) consist of a series of rapid chirps, produced at the rate of about 3/s (temperature unknown). Each chirp, lasting 105.3-139.5 ms (n=15), consists of 6-7 pulses ( Figs. 57 C-D). Most energy of the call is allocated between 8 and 9.5 kHz, and in the first harmonic between 16 and 19 kHz. The energy distribution above 22 kHz is unknown.

Material examined.— COSTA RICA: Puntarenas Prov., 4 km NW of San Vito de Java (jct. of road and Río Java), elev. 914.4 m, 20 January 1967 (coll. I.J. Cantrall) - 4 females ( UMMZ); Península de Osa, Rancho Quemado , elev. 200 m, 15 November 1992 (coll. R. Aguilar, M. Segura and F. Quesada) - 1 male ( INBio); Rancho Quemado, Pen. Osa, 15 February 1991 (coll. F. Quesada) - 1 female ( INBio); Rancho Quemado Península de Osa, elev. 200 m, 15 October 1992 (coll. F. Quesada) - 1 female ( INBio); Rancho Quemado, Península de Osa, elev. 200 m, 19 - 27 August 1993 (coll.A. Gutiérrez) - 1 female ( INBio); Sirena, Corcovado N.P., elev. 0 - 100 m, 15 October 1990 (coll. J.C. Saborio) - 1 male ( INBio); COLOMBIA: Dept. Magdalena, Río Frío, 22 March 1925 (coll. F.W. Walker) - 24 males, 32 females ( UMMZ); ECUADOR: Guayas Prov., Río Frío, 20 km E of Hda. Balao Chico, 26 - 27 April 1963 (coll. Hubbell and Peña) - 3 females ( UMMZ); MEXICO: Chiapas Prov., Dist. Soconusco, Finca Esperanza, 14 - 17 July 1937 (coll. Hartweg-Brodkorp) - 1 female ( UMMZ); PANAMA: Bocas del Toro, Changuinola, 14 January 1922 (coll. F. Cobb) - 1 male ( UMMZ); Canal Zone, Barro Colorado Island, 16 - 18 March 1926 (coll. F.M. Gaige) - 2 males ( UMMZ); same locality, 2 January 1967 (coll. I.J. Cantrall) - 1 male ( UMMZ); same locality, 27 January 1968 (coll. O.J. Sexton) - 1 female ( UMMZ); S-9 Road (ca. 6 km SW Gatun), 30 December 1972 (coll. E.A. Strauch) - 1 female ( UMMZ); Panama, top of Cerro Azul (10 mi. E and 9 mi. N Panama City), 14 January 1967 (coll. I.J. Cantrall) - 1 female ( UMMZ).

Figures

FIG. 24. Eppia truncatipennis. A. female - habitus, B. female face, C. female head and pronotum, dorsal view, D. titillators, everted, E. male cerci, dorsal view.

FIG. 48. Stridulatory files of Costa Rican species of Conocephalinae s. l. A. Sphyrometopa femorata, C. Sphyrometopa atlantica, C. ditto, enlarged fragment, D. Eppia truncatipennis, enlarged fragment, E. ditto, entire file, F. Caulopsis cuspidata, entire file, G. ditto, enlarged fragment, H. Caulopsis microprora, enlarged fragment, I. ditto, entire file.

FIG. 57. Oscillograms of male airborne calls of Costa Rican species of Conocephalinae s. l. A. Neoconocephalus triops, B. ditto, 0.5 s fragment, C. Eppia truncatipennis (Panama, Gamboa), D. ditto, 0.5 s fragment, E. Sphyrometopa atlantica, F. ditto, 0.5 s fragment, G. Sphyrometopa femorata, 0.5 s fragment.

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.