Cratomelus armatus 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 : 140-144

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.6929234
persistent identifier	https://treatment.plazi.org/id/03D62533-FFA5-9128-98B4-78BAFCFAC0E4
treatment provided by	Plazi
scientific name	Cratomelus armatus Blanchard, 1851
status

Treatment

Cratomelus armatus Blanchard, 1851 View in CoL

( Figs. 1–5 View FIGURE 1 View FIGURE 2 View FIGURE 3 View FIGURE 4 View FIGURE 5 )

http://lsid.speciesfile.org/urn:lsid: Orthoptera .speciesfile.org:TaxonName:20213

Redescription. In addition to the characters of the genus: Male. Medium size (25–35 mm.), body reddish-brown shiny ( Figs. 1A–B View FIGURE 1 ). Head. Fastigium of vertex not projected, almost as wide as scapus. Fastigium of frons rounded, touching fastigium of vertex. Clypeus wider than high, subtriangular, lateral margin gradually narrowing towards apical margin, slightly curved; apical margin arched. Scapus and pedicellus unarmed ( Fig. 1C View FIGURE 1 ). Thorax. Pronotal disc with rounded anterior and posterior border, anterior border covered with short hairs ( Fig. 1D View FIGURE 1 ). Legs. Fore tibia with a spur on the inner dorsal margin, near the apex, three or four spurs on both ventral margins, and apex with two spurs of similar length ( Fig. 2A View FIGURE 2 ). Mid-tibia with two spurs on the outer dorsal margin and three spurs on the inner dorsal margin, ventral margins with four spurs, and apex with two spurs similar in length on each side ( Fig. 2B View FIGURE 2 ). Hind femur with granules on dorsal margin; outer face of the femur with 12-16 chevrons located in the upper half, occupying two-thirds of the length of the femur; genicular lobe armed with a spinule on the ventral margin ( Fig. 2C View FIGURE 2 ). Hind tibia with six conspicuous spines on each dorsal margin, ventral margins with two or three small spurs, apex with three spurs on each side, the most prominent being the dorsal ones ( Figs. 2D–E View FIGURE 2 ). Wings. Tegminae surpasses the first abdominal tergite, reaching about the middle of the abdomen ( Fig. 1D View FIGURE 1 ). Dorsal edge of tegmina curved, ventral one straight, widened area between MP+CuA2 with ten to twelve transversal veins ( Fig. 2F View FIGURE 2 ). Hind wing with thickened veins, with two markedly expanded areas, the first and most conspicuous between the Sc and R veins, ovoid and elongated, the dorsal edge after this area is surrounded by Sc branches. The second area, between the CuP vein and the anal veins, is elongated and lanceolate ( Fig. 2G View FIGURE 2 ). Abdomen robust, posterior margin of 6th and 7th tergites angulated, projecting moderately. 8th tergite extends over the last abdominal tergites, and is slightly divided at apex ( Fig. 2H View FIGURE 2 ). 9th tergite with rounded posterior border and projecting moderately over last segment ( Figs. 2 View FIGURE 2 I-K). 10th tergite slightly divided by a membranous area, with a conical hook on each side ( Fig. 2I View FIGURE 2 ). Cerci simple, projecting upwards from the base towards the apex ( Fig. 2J View FIGURE 2 ). Paraprocts flattened, thin flexible, in the form of a wide hook ( Figs. 2I, L View FIGURE 2 ). Male subgenital plate notch deep, reaching half the total length of the subgenital plate and covered by hairs along the edge of the notch; stily cylindrical and with almost the same thickness throughout its length ( Fig. 2K View FIGURE 2 ). Phallic complex almost membranous, dl. lanceolate with an angulated posterior edge ( Fig. 3A View FIGURE 3 ); ldl and lw.vl. located sideways ( Figs. 3A–B View FIGURE 3 ); ldl rounded, in the middle of these is located ti, which is moderately sclerotized, yellowish, and located on the inner borders of ldl ( Figs. 3B–C View FIGURE 3 ). lw.vl located, in ventral view, quadrangular, shorter than ldl, and covered by numerous microstructures ( Figs. 3B View FIGURE 3 ). Ejv rounded and medium-sized; ejd thin and tubular, without sclerotizations ( Fig. 3D View FIGURE 3 ). Df thin and surrounding the anterior border of the genitalia ( Fig. 3A–D View FIGURE 3 ).

Female. Similar in shape and size to the male ( Fig. 4 View FIGURE 4 ). Tegmina rounded, both in the costal and anal margins, venation with a similar organization to the male ( Fig. 5A View FIGURE 5 ). Hindwing with specialized venation similarly to the male ( Fig. 5B View FIGURE 5 ). Posterior margin of the 7th and 8th tergites in the central portion moderately elevated, 10th tergite with a depression in the dorsal central area ( Fig. 5C View FIGURE 5 ). Epiproctus semicircle-shaped; below those, the paraprocts are flattened, sclerotized, and surrounding the excretory pore ( Fig. 5C View FIGURE 5 ). Subgenital plate triangular wider than long ( Fig. 5D View FIGURE 5 ). Cerci without modification, thin and medium size. Ovipositor as long as two-thirds the length of the hind femur, dorsal and ventral borders smooth, slightly curving upwards, apex slightly pointed ( Fig. 5E View FIGURE 5 ).

Specimenes examined. Chile, 1 female. 1957. 1 male. Surroundings of Valdivia (Alrededores de Valdivia), 17-1-1959, L. Langguth. ( CAUD) . Chile, 1 male and 1 female. Barra del Río Bueno , II-1995, R . Vaz Ferraira (FCMU).

Measurements (mm) male/female: LB: 25–30 / 25–28. Pr: 7.5–9 / 7–8. Teg: 5–6.5 / 5–5.5. HF: 15–17 / 14–15. HT: 14–16 / 13–14. SP: 4–4.5 / 2–3. Ov: 10–11.

Distribution. Mainly in South-Central Chile, from sea level to 1600 m. They also inhabit islands to the south of their distribution. Recently reported for the Argentine side of the Andes ( Zubarán & Braun 2018).

Comments. The type locality of this species is Chile, with no additional locality data. When compared with the lectotype specimen and the 14 paralectotype specimens (two of these with additional data, collected in Concepción and another from Talcahuano), deposited in the MNHN Paris, they fit the diagnostic characters of the specimens studied here, confirming that phenotypically they belong to the same species. Additionally, we compared specimens deposited in the collections of MFN, NMW, MACN, and type specimens of synonyms of the species such as Cratomelus productus Ander, 1932 (NHRS) and Lencinca ferrugínea Walker, 1870 (BMHN), all also fit the morphological characteristics of our specimens here described.