Conocephalus (Xiphidion) angustifrons Redtenbacher 1891
Creators: name: Naskrecki, Piotr
Publisher: name: Zenodo
Year: 2000
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Dryophthoridae
Conocephalus
Conocephalus angustifrons

description: <i>Conocephalus (Xiphidion) angustifrons</i> (Redtenbacher, 1891) Figs. 1 C, 2E, 2J, 36A, 39B, 39J, 52C-D, Map 1 1891 Redtenbacher, Monogr. Conoceph.: 498 &gt;&gt; <i>Xiphidium;</i> type locality: Colombia: Tolima and Sta Fe de Bogota; type depository: Naturhistorisches Museum, Vienna, Austria – male and female syntypes 1906 Kirby, Syn. Cat. Orth. 2: 282. &gt;&gt; <i>Anisoptera</i> 1915b Rehn and Hebard, Trans. Amer. Ent. Soc. 41: 260 &gt;&gt; <i>Conocephalus (Xiphidion)</i> <i>Diagnostic description.—</i> General characteristics as described above; most individuals in the Costa Rican population mesopterous (Fig. 36 A), rarely macropterous. Stridulatory file of male 1.06 mm long, with 40 teeth, maximum width of file 50 μm (Fig. 39 J); teeth of file thick, peg-like, more densely arranged at proximal end of file. Left (upper) mirror of stridulatory apparatus as in Fig. 1 C, shorter than eye diameter. Fastigium of 1/2 to 3/4 as wide as scapus. Outer ventral edge of hind femur armed with 1-4 minute, black spines. Male cercus as in Fig. 39 B; ovipositor distinctly shorter than hind femur (ratio ovipositor/hind femur 0.62-0.71), weakly upcurved (Fig. 2 E). <i>Coloration</i>.— Coloration unique, in live individuals head and anterior portion of pronotum aquamarine green or teal, posterior part of pronotum, thoracic terga and first four abdominal terga emerald green; remaining portion of abdomen of male bright orange-red, that of female reddish-brown; all femora brown, hind knees dark brown; fore and mid tibia emerald green, hind tibia dark green to brown. Dorsum of head and pronotum with wide, dark band, typical of most species of the genus (Fig. 36 A). Coloration deteriorates considerably in preserved specimens but most of them still retain dark bluish-green coloration, unlike any other species of <i>Conocephalus</i>. <i>Measurements</i>.— Table 2. <i>Bioacoustics.—</i> The call of <i>C. angustifrons</i> consists of a series of short chirps, produced at the rate of about 1.4- 2.0 per second (at 26°C) (Fig. 52 C). Each chirp lasts 92- 124 ms (avrg. 116±10.3, n=10) and consists of 3-4 wingstrokes (opening and closing), with the first wingstroke being incomplete (Fig. 52 D). Typically of the genus, the call is low Q, with most energy within the audible part of the call allocated between 6.5-16 kHz. <i>Remarks.—</i> This species is known from the Atlantic portion of Costa Rica (Map 1), Panama, and Colombia. It is one of the most distinctive species of the genus and cannot be confused with any other species of <i>Conocephalus</i> in Costa Rica. <i>Conocephalus angustifrons</i> seems to be active mostly at night although males also stridulate during the day. This species appears to be predaceous, successfully hunting insects of nearly equal body size (e.g., katydids of the genus <i>Phlugis</i>). <i>Material examined.—</i> <b>COSTA RICA: Cartago Prov.</b>, 2 mi SE Turrialba (grounds of Inst. Interamer. de Sci. Agricolas), 1 - 3 October 1961 (coll. Hubbell, Cantrall, Cohn) - 5 males, 1 female (UMMZ); Monumento Nacional Guayabo, A.C.A.C. Amistad, 15 July 1994 (coll. G. Fonseca) - 1 male (INBio); Quebrada Segunda Ref., Nac. Fauna Silv. Tapantí, elev. 1250 m, 15 April 1992 (coll. R. Vargas) - 1 female (INBio); <b>Heredia Prov.</b>, Braulio Carillo N. P., Estac. El Ceibo, elev. 400 - 600 m, 15 December 1989 (coll. R. Aguilar and M. Zumbado) - 2 males (INBio); Puerto Viejo, La Selva Biological Station, elev. 50 - 150 m, 10° 26' N, 84° 1' W, 1 - 4 April 1994 (coll. P. Naskrecki) - 1 male (INBio); same locality, elev. 50 - 150 m, 10° 26' N, 84° 1' W, 13 April - 10 May 1998 (coll. P. Naskrecki) - 2 males (INBio); <b>Limón Prov.</b>, Estac. Hitoy-Cerere Res. Biol. Hitoy Cerere, Río Cerere, elev. 200 m, 15 December 1990 (coll. G. Carballo) - 1 male (INBio); same locality, elev. 200 m, 15 April 1991 (coll. G. Carballo) - 1 male (INBio); same locality, elev. 100 m, 15 June 1991 (coll. A. Moreno) - 1 female (INBio); same locality, elev. 100 m, 15 June 1991 (coll. G. Carballo) - 1 male, 1 female (INBio); Los Diamantes (1 km E of Guápiles), 26 - 27 January 1967 (coll. I.J. Cantrall) - 10 males, 6 females (UMMZ); Saturno Farm, Estrella Valley, elev. 30.48 m, 12 September 1923 - 2 males (ANSP); <b>PANAMA</b>: Canal Zone, Barro Colorado Island, 20 January 1967 (coll. I.J. Cantrall) - 1 female (UMMZ).
description: Published as part of <i>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,</i> on pages 14-16, DOI: 10.5281/zenodo.270035
description: {"references": ["Redtenbacher, J. 1891. Monographie der Conocephaliden, Verh. k. k. zool. - botan. Ges. Wien, 41, 315 - 562."]}