Cearagrylloides perforatorius Martins-Neto

Martins-Neto, Rafael Gioia & Tassi, Lara Vaz, 2009, The Orthoptera (Ensifera) from the Santana formation (Early Cretaceous, Northeast Brazil): A statistical and paleoecological approach, with description of new taxa, Zootaxa 2080, pp. 21-37 : 27-28

Cearagrylloides perforatorius Martins-Neto , n. comb.

(Pl. IIB; Figs. 2 A, D, H.)

1. Cearagryllus perforatorius Martins-Neto, 1991 .

Specimens included. CV-6015 (holotype), DGM-6281 (paratype), CD-I-41, CV-1020, and the supplementary material originally included, RGMN-662, CV-6015, CV-2429, and RGMN-901.

Additional specimens included. CV-1980, RGMN-506, and RGMN-507.

Specimens excluded. CV-1699, RGMN-203, CD-I-123, and CV-257.

Emended diagnosis. Females with robust body, varying from 29 to 32 mm length; fore wing length varying from 28 to 32 mm; ovipositor length varying from 32 to 36 mm. Ovipositor 1.1 times longer than the body and/or the fore wing length. Relatively large and dorsally rounded head. Fore wing about three times longer than wide; ScP sigmoid, distally converging towards the costal margin and notably thickened basally; R parallel to ScP. MP two-branched; around nine MP2 secondary branches. r-m present, connecting R to MA.

Discussion. Following the examination of new supplementary material (especially well-preserved wings), several apomorphies of this species can be recognized, such as the sigmoid ScP, thickened at its base, as well as the presence of r-m, confirmed in all observed specimens.

Description (supplementary material RGMN-506). Body and forewing length 32 mm. Ovipositor length as preserved 32 mm (total length ca. 36 mm). Fore tibia smooth with a relatively long apical spur. Fore wing ( Fig. 3 A) three times longer than wide, with wide costal area, narrowing towards the apex, filled by rather long cross-veins and accessory veinlets forming a mosaic of heterogeneous cells. ScP sigmoid, thickened at its base, converging towards the costal margin around a quarter wing-length from the apex. R parallel to ScP. M three-branched. Presence of r-m connecting R to MA, situated at the mid length of the wing. At least nine MP2 secondary branches, all connected by cross-veins, forming a mosaic of heterogeneous cells.

Remarks. The specimen CV-1980, an isolated fore wing, was figured by Martins-Neto (1991) as belonging to Cearagryllus poliacanthus . Its wing venation is, in fact, virtually identical to that of Cearagrylloides perforatorius Martins-Neto (1991) , to which species it is now transferred. The specimen CV- 257 does not exhibit sufficient diagnostic characters to be included in the species, being now considered Cearagrylloides sp.

Figures

FIGURE 2. Fore wing (A-C), ovipositor (D-G) and hind legs (H-K) details of the Santana Formation Cearagryllinae (females). A, D, H) Cearagrylloides perforatorius n. gen. et n. comb., drawn from the specimen RGMN- 506 (A), CV- 6015 (D, H); B, E) Cearagrylloides microcephalus n. gen. et n. comb., drawn from the specimen RGMN- 508 (B), and GP / 1 T- 1680 (E); C, G, K) Paracearagryllus poliacanthus n. gen. et n. comb., drawn from the specimen RGMN- 338 (C, G), and from holotype (K); F) Cearagrylloides previstus n. gen. et n. comb., drawn from holotype. Scale bar 1 mm.

FIGURE 3. Dispersion curves for Araripe cearagryllids. A and B fore wing length and ovipositor, respectively for Euclydes ramosfernandesi Martins-Neto, 2007 (Stenopelmatoidea), a possible mimetic Orthoptera of cearagryllids.