Eriolus penicillus Naskrecki

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, : 117

Eriolus penicillus Naskrecki , sp. n.

Figs. 32 A-D, 37C, 50F, Map 16

Type locality: Costa Rica: Heredia Prov., La Selva

Biological Station; type depository: Academy of Natural Sciences, Philadelphia – holotype male

Diagnostic description.— Body small, slender, with wings in both sexes extending beyond apices of hind femora by about half of their length ( Fig. 37 C). Fastigium of vertex conical, with well developed ventral keel, as long as 1.5 eye diameter. Prosternum unarmed. Male stridulatory file weakly sinusoidal, 1.2 mm long, 76 μm wide, with 146 closely spaced and relatively narrow teeth ( Fig. 50 F); stridulatory area on male wings strongly projecting, approximately triangular in shape; mirror triangular; secondary veinlet next to AA 1 present, parallel; stridulatory area of left wing devoid of secondary venation.

Tenth tergite in both sexes with two, somewhat converging, long and narrow, apically rounded lobes; male cercus about twice as long as thick, with thin, finger-like, subapical spine ( Fig. 32 A); female cercus simple, elongately conical, somewhat curved. Male titillators in the form of a tuft of thin, cuticular threads, their basal parts hidden in sheath of phallic membrane ( Figs. 32 C- D). Male subgenital plate with small apical incision and long styli; female subgenital plate approximately triangular, with minute, triangular lobe on its hind margin. Ovipositor long, saber-shaped, distinctly longer than half of hind femur (ratio ovipositor/hind femur 0.77-0.93) ( Fig. 32 B).

Coloration.— General coloration pale green ( Fig. 37 C); clypeus and mandibles purple; pronotum in both sexes with two thin, yellow stripes on dorsal edges of pronotum; posterior edge of metazona in male without additional markings; tegmina with irregularly distributed, numerous small, black dots.

Measurements.— Table 23 .

Distribution.— E. penicillus is known only from the northeastern Atlantic portion of Costa Rica ( Map 16 ).

Material examined.— COSTA RICA: Heredia Prov., Finca Naranjo Valenciana, 2 km S Pueblo Nuevo, Sarapiquí, elev. 90 m, 9 - 30 September 1992 (coll. M. Ortiz) - 1 female (paratype) ( INBio); same locality, elev. 90 m, 22 December 1992 (coll. M. Ortiz) - 1 female (paratype) ( INBio); Puerto Viejo, La Selva Biological Station, elev. 50 - 150 m, 10° 26' N, 84° 1' W, 5 May 1993 (coll. ALAS ) - 1 male, 1 female (paratypes) ( ALAS ); same locality, 1 - 30 November 1993 (coll. ALAS ) - 2 males (paratypes) ( ALAS ); same locality, 1 - 4 April 1994 (coll. P. Naskrecki) - 1 female (paratype) ( PN collection); same locality, 7 October 1995 (coll. P. Naskrecki) - 1 female (allotype) ( ANSP); same locality, 10 - 15 November 1995 (coll. P. Naskrecki) - 1 female (paratype) ( PN collection); same locality, 10-25 January 1999 (coll. D.L. Wagner) – 1 male (holotype) ( ANSP); Limón Prov., Río Sardinas, R.N.F.S. Barra del Colorado, 12 November 1993 (coll. F. Araya) - 1 female (paratype) ( INBio).

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.

FIG. 37. Costa Rican species of Conocephalinae s. l. A. Erioloides longipennis - female ovipositing, B. Erioloides longinoi - male, C. Eriolus penicillus - female, D. Conocephalus cinereus - male, macropterous form, E. Neoconocephalus triops - male, brown form, F. Sphyrometopa atlantica - male, inset - nymph.

FIG. 50. Stridulatory files of Costa Rican species of Conocephalinae s. l. A. Erioloides longinoi, C. Erioloides sikesi, C. Erioloides acutidentis, D. Eriolus duplidentis, E. Eriolus aculeus, F. Eriolus penicillus, G. Subria scutellaris, H. Subria crassicerca.

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.