Allocearagryllus 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: 25

publication ID 10.5281/zenodo.187344


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scientific name

Allocearagryllus Martins-Neto


Allocearagryllus Martins-Neto   n. gen.

Etymology. A different Cearagryllus  

Type species. Notocearagryllus leipnitzi Martins-Neto, 2002   b

Diagnosis (male). Speculum approximately square (posterior margin slightly shorter than the anterior) with sp 1 converging on sp 2. CuA secondary branches beginning above the speculum (area supra-specular). Ve i n d-am situated at the boundary of anterior and anterolateral margins of the speculum. Curved d vein. Area below the posterior margin of the speculum similar in width to the adjacent ones.

Discussion. Similar to Notocearagryllus Martins-Neto, 1999   in the general aspect of the tegmen morphology, differing however in features of the speculum: the posterior margin is slightly shorter than the anterior in Allocearagryllus   n. gen. (posterior longer than anterior in Notocearagryllus   ); sp 1 converges on sp 2 in Allocearagryllus   n. gen. (parallel in Notocearagryllus   ); sp 2 origin is at the base of the posterolateral margin of the speculum in Allocearagryllus   n. gen. (at the posterior margin in Notocearagryllus   ). Additionally, the CuA secondary branches begin above the speculum in Allocearagryllus   n. gen., and after the speculum in Notocearagryllus   . Allocearagryllus   n. gen. is also larger: tegmen length 25 mm as preserved (representing about 2 / 3 total length), compared with a total tegmen length of around 22 mm in Notocearagryllus   . The features outlined above also distinguish the new genus from Cearagryllus   . The d vein deflects at the anterior margin of the speculum in both Notocearagryllus   and Cearagryllus   , and d is curved forward in Allocearagryllus   n. gen. The area below the posterior margin of the speculum is as wide as the adjacent ones in Allocearagryllus   n. gen., wider in both Cearagryllus   and Notocearagryllus   .