Glaphyrosoma paragracile, Cadena-Castañeda & Weissman, 2020

Cadena-Castañeda, Oscar J. & Weissman, David B., 2020, Review of Glaphyrosoma (Orthoptera: Stenopelmatoidea: Anostostomatidae) including new species and biological information, Zootaxa 4779 (1), pp. 1-37 : 28-33

Glaphyrosoma paragracile n. sp.

( Figures 21–24, Map 3)

http://lsid.speciesfile.org/urn:lsid: Orthoptera .speciesfile.org:TaxonName:509374

Holotype. ♂ (in alcohol). Mexico, Veracruz, Metlac Canyon of Río Metlac ; 18°54’23.87’’ –97°00’46.31’’. 850m. 20 June 2006; D.B. Weissman, D.C. Lightfoot ( DBW Stop # 06-39) (S-06-39, R06-147 ) CASENT 9077079 ( CAS). CAS Entomology type # 20061 ( CAS).

Paratypes. 2 ♀ 1♂. Same data as holotype but different codes : ♀. (S-06-39 F1792) CASENT 9077077 . ♂ (S06- 39 F1797) CASENT 9077076 ( CAS) . ♀. (S 06-39 F1913) CASENT 9077081 ( CAUD) .

Description. Male. Medium-sized for genus, shiny, and relatively uniformly colored ( Figs. 21A, 24A): head and majority of tergites brown but with lower half of epicranium, most part of mouthparts, scape, pedicel, ventrolateral parts of tergites from pronotum to subapical tergite, and apical tenth abdominal tergite light brown, as well as with all ocelli and all palpi yellowish; rest of body from light brown to yellowish, with somewhat darkened (almost brown) ( Figs. 21B, C, D) small areas near femur-tibia articulations as well as subapical third of hind femur. Head ovoid with rather short and wide rostrum, and almost two times as wide as space between antennal cavities; latter space almost two times as wide as scape; ocelli round, almost equal to each other in size, and 1.5 times wider than pedicel ( Fig. 21B). Fore tibia with ventral margin covered by a soft row of hairs from near the base towards the apex, and in the dorsal margin, that row of hairs continues in the distal portion. Middle tibia with four ventral spines on each margin and two spines on each dorsal margin. Hind femur with two transversal main pegs rows with few spinules, on inner side near to base; hind tibia with nine spines on the dorsal external margin, and eight spines on the dorsal internal margin ( Fig. 21E). First two abdominal tergites with pegs occupying small area of the lateral section of tergites, very close to pleural membrane, these pegs are small and irregularly distributed ( Fig. 21D). Posterior edge of the ninth tergite wavy, covering the last abdominal tergite ( Fig. 21F); tenth tergite divided in the middle, dorso-medial margin with hooks (the hook of the right plate is missing in the holotype specimen), conical, moderately thickened, straight and with the slightly sharp apex ( Figs. 21G, H). Epiproct with rounded posterior edge; each paraproct lanceolate, curving up near the base, narrowing and thinning towards the apex, armed with a lateral spine, near the apex ( Fig. 21I). Subgenital plate wider than long, conical styles, shallow and rounded posteromedian notch ( Fig. 21J).

Female. Similar to the male in shape and coloration ( Figs. 22A, B, C, D, 24B). Hind femur with three transversal main pegs rows with few spinules on inner side near to base ( Fig. 22A). First two abdominal tergites with pegs as in the male, but with the pegs close together ( Fig. 22D). Tenth tergite dorsally divided, rounded epiproct, paraprocts without specialization and ovoid. Subgenital plate triangular with slightly pronounced apex ( Fig. 22F). Ovipositor slightly curving upward from the mesal portion, apex moderately sharp, valves without denticulations or depressions on the margins ( Fig. 22G).

Variation. No variations were observed in the specimens studied, only the differences in measurements.

Measurements (in mm.). Holotype: LB: 25. Pr: 5.5. HF: 15. HT: 14. Paratypes: Male / Females: LB: 21/23– 25. Pr: 5/4.5–5.5. HF: 15/14.5–19.5. HT: 14/11–19. Ov: 7.5–8.5.

Etymology. refers to closeness and kinship with G. gracile .

Habitat. Open riparian forest.

Drum. R06-147 This male drummed around 29 drums/s at 15.5°C with series of 30–103 drums in length ( Fig. 23).

Karyotype. Unknown.

DNA. F1792 ( G. paragracile ) mapped closest (Vandergast pers. comm. to DBW) to F1793, which is G. gracile , but F1793 was not included in Vandergast et al. (2017) because it was not recognized as distinct.

Comparison. G. paragracile n. sp., is similar in coloration and ovipositor to microsympatric G. gracile . The species can be differentiated by terminal structures: while the paraprocts in both have a preapical spine, those in the new species don’t have an apical curvature, and lack the membranous area on the dorsal margin. The subgenital plates in both females are triangular, with the apex prolonged.