Glaphyrosoma brevivaginalis, 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: 12-15

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Glaphyrosoma brevivaginalis

n. sp.

Glaphyrosoma brevivaginalis   n. sp.

( Figures 7–10 View FIGURE 7 View FIGURE 8 View FIGURE 9 View FIGURE 10 , Map 1) Orthoptera

Holotype. ♂ (in alcohol). Mexico, Nuevo León, Highway 61. 8.1 Km S of Highway 58 at Km 182; 1835m. 20 September 2003. D.B. Weissman, D.C. Lightfoot (D.B. Weissman Stop # 03-108) (S 03-108, Died 3/10), CASENT 9077074, CAS Entomology type # 19280 ( CAS).  

Paratypes. 5♀. Same data as holotype, but with different codes: S03-108 F 1372 to 1376. (3 females paratypes to CAS and 2 females to CAUD)  

Others specimens examined. 4♂ immatures. Same data as holotype, used for the dissection of testes. CASENT 9086109 ( CAS)   .

Description. Male. Body small for genus, shiny, and relatively uniformly colored ( Fig. 7A View FIGURE 7 ): head and majority of tergites reddish brown (in a transversally striped body coloration) but with lower half of frons, most part of mouthparts, scape, pedicel, ventrolateral and first half parts of tergites from pronotum to subapical tergite, and apical tenth abdominal tergite ochre, as well as with all ocelli and all palpi yellowish ( Figs. 7B, C, D View FIGURE 7 ). Fore tibia with ventral margin covered by a soft row of hairs from the middle to the apex, and on the dorsal margin, that row of hairs continues in the distal portion. Mid tibia with four ventral spines on each side. Hind femur with eight transversal main pegs rows on inner side, near to base ( Fig. 7D View FIGURE 7 ). Hind tibia with nine spines on the dorsal outer margin, and eight spines on the dorsal inner margin. First two abdominal tergites with pegs close together ( Fig. 7D View FIGURE 7 ). Posterior edge of the ninth tergite rounded, slightly extended to the sides, without completely covering the last abdominal tergite, only the lateral regions ( Fig. 7F View FIGURE 7 ). Tenth tergite hooks, robust and conspicuous ( Figs. 7G, H View FIGURE 7 ). Epiproct with straight posterior edge; each paraproct cylindrical, curving upwards from half its length, moderately dilated and with a rounded apex and devoid of spinula; dorsal half of the paraproct in a thin fold, forming a concave cavity on the inner face ( Fig. 7I View FIGURE 7 ). Cerci thin and rather long, almost 2.5 times as long as paraproct ( Fig. 7H View FIGURE 7 ); subgenital plate rectangular, wider than long, triangular styles, postero-median notch shallow ( Fig. 7J View FIGURE 7 ).

Female. Similar to the male in form, but with lighter coloring patterns and larger ( Figs. 8A, B, C, D View FIGURE 8 , 9 View FIGURE 9 ). Hind femur with four to six transverse main pegs rows, on inner side near to base (three specimens with six pegs rows) ( Fig. 8E View FIGURE 8 ). Tenth tergite without modifications or furrows; epiproct and paraprocts ovoid, without specializations. Subgenital plate triangular, as wide as long, apex rounded ( Fig. 8F View FIGURE 8 ). Ovipositor reduced, as long as a fourth of the hind femur’s length, almost straight and with a sharp apex, valves smooth, without denticulations ( Fig. 8G View FIGURE 8 ).

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

Measurements (in mm.). Holotype: LB: 18. Pr: 5. HF: 14.5. HT: 14. Paratypes: LB: 15–19. Pr: 5.5–6. HF: 15–16.5. HT: 14–15. Ov: 4–5.

Etymology. It refers to the reduced ovipositor that contrasts markedly with that of the other species of the genus.

Habitat. To oatmeal trails in woods.

Drum. Unknown.

Karyotype. T03- 26. 2n ♂ = 29. The largest pair of autosomes are metacentric while autosomal pairs 2 through 14 are all rod shaped. The largest chromosome is the single metacentric X ( Fig. 10 View FIGURE 10 ).

DNA. F1372 & F1373 map ( Fig. 2 View FIGURE 2 ) in Vandergast et al. (2017) closest to G. huasteca   n. sp.

Comparision. G. brevivaginalis   n. sp., is similar to G. mexicanum   , although the new species is smaller. Both have transversally striped body coloration, but in the new species the brown stripes are thinner and less conspicuous. The male paraprocts in G. brevivaginalis   n. sp. lack the preapical spine that is present in G. mexicanum   ; the membranous region of the paraproct in the new species is dorsal and does not fold, while for G. mexicanum   the distal half of this region is membranous and folds into the paraproct. From females, G. brevivaginalis   n. sp. has the shortest ovipositor of all known species, reaching only one fourth of the length of the hind femur, in contrast to the other known species, which are as long as half the length of the hind femur or a little longer.


California Academy of Sciences