Cratomelus Blanchard, 1851

Cadena-Castañeda, Oscar J., Castañeda, Didier, Garay, Andrea & Rincón, William Fernando, 2022, Studies on chevron crickets: Morphological redescription of Chilean red cricket Cratomelus armatus Blanchard, 1851 (Orthoptera: Anostostomatidae), Zootaxa 5169 (2), pp. 136-146 : 138-140

publication ID	https://doi.org/ 10.11646/zootaxa.5169.2.2
publication LSID	lsid:zoobank.org:pub:5F4164D8-E1D4-42A8-AEE1-F89939F05FB9
DOI	https://doi.org/10.5281/zenodo.6919890
persistent identifier	https://treatment.plazi.org/id/03D62533-FFA3-9124-98B4-7D33FEF0C05C
treatment provided by	Plazi
scientific name	Cratomelus Blanchard, 1851
status

Treatment

Cratomelus Blanchard, 1851 View in CoL

Redescription. Body mid-size (25–35 mm.), body surface generally smooth and shiny, color reddish ( Figs. 1 View FIGURE 1 and 4 View FIGURE 4 ). Head as broad as pronotum ( Fig. 1D View FIGURE 1 ), rounded and smooth; almost as wide as high in frontal view ( Fig. 1C View FIGURE 1 ). Vertex rounded. Eyes ovoid, not protruding. Ocelli circular and small. The eyes and antennal pits are located in the middle of the face ( Fig. 1C View FIGURE 1 ). Fastigium moderately narrow, almost as wide as the scape, lateral edges sulcated. Mandibles of the male without sexual specialization. Maxillary palpi longer, first and second subequal in size and rectangular; third cylindrical almost two times longer as the first and second together; fourth as long as the third, five little longer than the fourth with the apex with a small prolongation ( Fig. 1A View FIGURE 1 ). Thorax. Pronotal disc longer than wide; posterior margin rounded and little broader than the anterior margin ( Fig. 1D View FIGURE 1 ); lateral lobules rectangular, wider than high and with a rounded lateral edge, ventral margin almost straight ( Figs. 1A View FIGURE 1 and 4A View FIGURE 4 ). Meso and metanotum unmodified and without glandular pits. Prosternum armed with a pair of closely spaced triangular spines; mesosternum quadrangular with rounded lateral lobes and a notch in the middle of the lobes; metasternum hexagonal, 3.5 times wider than long, with a small notch on the posterior margin. Wings shortened, with distinctly S-shaped CuP and the widened area between MP+CuA2 ( Figs. 2F View FIGURE 2 , 4A View FIGURE 4 ); hind wings in both sexes transformed into stridulatory apparatus (tegmino alar stridulation) ( Figs. 2G View FIGURE 2 , 5B View FIGURE 5 ). Legs. Coxae laterally flattened, with a distal spine on the dorsal margin. Fore and mid femora with few small spines on ventral margin ( Fig. 2 View FIGURE 2 A-B, hind femur slightly serrulate ventrally and dorsally and without rows on inner side; outer side with well-developed chevrons relief ( Fig. 2C View FIGURE 2 ). Fore tibia without tympana ( Fig. 2A View FIGURE 2 ); fore and mid tibiae with movable spurs on ventral margins, apex, and two or one dorsally spurs ( Figs. 2A–B View FIGURE 2 ). Hind tibiae with strong and not movable dorsal spines, the apex spurs movable and conspicuous ( Figs. 2D–E View FIGURE 2 ). Abdomen cylindrical, penultimate tergite of male varying, prolonged or not; medial parts of ultimate tergite not separated from its lateral parts, with hooks ( Fig. 2I View FIGURE 2 ). Paraprocts wide, curved, and flattened ( Fig. 2L View FIGURE 2 ). Male subgenital plates with articulated styles ( Fig. 2K View FIGURE 2 ). Male genitalia. Small, almost entirely membranous, ti moderately sclerotized, lw.vl. with microstructures ( Fig. 3 View FIGURE 3 ). Female. Similar to male ( Fig. 4 View FIGURE 4 ). Subgenital plate triangular ( Fig. 5D View FIGURE 5 ), ovipositor mid-sized, tapering towards apex, and moderately curved ( Fig. 5E View FIGURE 5 ).