Orchelimum fraternum Rehn and Hebard 1915
Creators: name: Naskrecki, Piotr
Publisher: name: Zenodo
Year: 2000
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Orthoptera
Tettigoniidae
Orchelimum
Orchelimum fraternum

description: <i>Orchelimum fraternum</i> Rehn and Hebard, 1915 Figs. 3 A-F, 41A-C, 51E-F, Map 3 1915a Rehn &amp; Hebard, Trans. Amer. Ent. Soc. 41: 22, 79 &gt;&gt; <i>O. (Metarhoptrum)</i>; type locality: Mexico: Jalisco, Guadalajara; type depository: Academy of Natural Sciences, Philadelphia, PA, USA &gt;&gt; holotype male 1932 Hebard, Trans. Amer. Ent. Soc. 58: 334 <i>Diagnostic description.—</i> General characteristics as described above; mesopterous, with tegmina surpassing apex of abdomen but not reaching apices of hind femora (Fig. 3 A). Stridulatory file of male 1.62 mm long, with 68 primary teeth (see Fig. 41 A-B), maximum width of file 72.9 μm; teeth of file thick, peg-like, more densely arranged at ends of file than in its middle portion. Left (upper) mirror of stridulatory apparatus as in Fig. 3 C, about as long as eye diameter. Fastigium of 1.2 times wider than scapus. Ventral edges of hind femur unarmed. Male cercus as in Fig. 41 C; ovipositor distinctly shorter than hind femur (ratio ovipositor/hind femur 0.6-0.7), weakly upcurved (Fig. 3 F). <i>Coloration.—</i> Coloration light green; dorsum of head and pronotum with wide, dark band border with thin, yellow stripes (Fig. 3 C). Abdomen yellow dorsally, male cerci dark yellow, with reddish tips. <i>Measurements</i> (mm).— Measurements (4 males, 5 females). — body with wings: male 22.6-24.4, female 23- 23.1; pronotum: male 4.9-5.1, female 5-5.4; tegmen: male 16.5-17.3, female 15-16; hind femur: male 18.7-19, female 18.7-18.7; ovipositor: female 11.1-12.4. <i>Bioacoustics.—</i> The call of <i>O. fraternum</i> consists of regular series of short buzzes, each lasting 0.49- 0.77 s (at 28°C) and separated by 0.6- 0.77 s of silence (Fig. 51 E-F). Each buzz has two pulse train groups. The first group consists of 6-7 pulse trains produced at a slow rate (24.5-28.5/s), with trains separated by 7-14 ms (avrg. 11.26±2.4, n=19) of silence. The second, faster (47-48.2/s) and longer group consists of 11-25 train groups separated by only 1-3 ms (avrg. 1.8±0.5, n=18) of silence. Individual train groups are of similar length in both the slow and fast pulse train groups, and last 19-26 ms (avrg. 21±2.3, n=17). The call is low Q, with most energy apparently allocated between 9 and 16 kHz. <i>Material examined.—</i> <b>COSTA RICA: Guanacaste Prov.</b>, Area de Conservacion Guanacaste, Santa Rosa National Park, 21 - 24 August 1999 (coll. P. Naskrecki, D. Otte, G. Morris) - 4 males, 5 females (GKM, PN collection); Mexico: Jalisco, Guadalajara, (coll. Crawford) - 1 male (holotype) (Philadelphia).
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 24-26, DOI: 10.5281/zenodo.270035
description: {"references": ["Rehn, J. A. G., and Hebard, M. 1915 a. Studies in American Tettigoniidae (Orthoptera). IV. A synopsis of the species of the genus Orchelimum. Trans. Amer. Ent. Soc. 61: 11 - 83."]}