Cratolocustopsis cretacea ( Martins-Neto, 1990 )

Cratolocustopsis cretacea ( Martins-Neto, 1990) View in CoL

Figs. 5 View FIGURE 5 , 6 View FIGURE 6

Locality and horizon: Type locality imprecise; from one of the several quarries in the region of Nova Olinda and Santana do Cariri municipalities, Ceará State, Brazil. Nova Olinda Member , Crato Formation, Santana Group. Early Cretaceous, Aptian .

Type material: Holotype male (coll. no. GP/1 T-1671) and paratype male (coll. no. GP/1 T-1618a), both specimens are in the collection of Instituto de Geociências da Universidade de São Paulo (IGc/ USP) ( Fig. 6 View FIGURE 6 ).

Additional material examined in this study: A relatively well-preserved specimen of uncertain sex in the collection of Museu de Paleontologia Plácido Cidade Nuvens, Universidade Regional do Cariri, Santana do Cariri , Ceará, Brazil, coll. no. MPSC 9841 View Materials . Donation from Museum der Natur — Paläontologie / Geologie ( Museum of Nature — Palaeontology / Geology), Hamburg, Germany ( Collection number CNBS _00410), as part of the guidelines discussed at the “Brazil-German Colloquium on Paleontology: Science, Cooperation, and Diplomacy for the Future” .

Description of new material: Large parts of the body and wings preserved. Missing are most details of the prothoracic leg, the mesothoracic leg as well as the tarsus of the metathoracic leg. Structures of the abdominal apex obscured by metathoracic legs.

Measurements: Body length (head to abdominal apex) 17.9 mm. Head height 3.6 mm. Pronotum length 8.65 mm. Metafemur ca. 11.4 mm long. Metatibia (as preserved) 9.9 mm long. Forewing 20.6 mm long, 3.4 mm high.

Body: Head relatively small. Pronotum rather large and posteriorly elongated. Lateral margin with very prominent concave curve.

Legs: Prothoracic leg inconspicuous. Femur slightly wider than tibia. Metathoracic leg: femur relatively slender. Distal half of tibia dorsally with some small spines of which four are preserved.

Forewing: Length/height-ratio 6.1. ScP length at least 89% of twl. Termination of ScP (costal wing margin or fused to RA) not preserved. Space between ScP and RA 13.6% of total wing height (measured between RP4 and RP5). Origin of RP at 48.1% of twl, posterior to M bifurcation. Space between RA and RP 14% of wing height. RP with five branches. M with two branches. Fork of M at 43% of twl. Branches of M and RP more or less parallel. CuA + CuPaα with two branches. Anterior branch relatively parallel to M and RP, reaching wing margin at 61.3% of twl. Posterior branch strongly concave and fused to CuPaβ. Base of CuA + CuPaα (connection to CuPaβ) at 31.5% of twl. CuPaβ not reaching anal wing margin but fused to CuPb at 43.3% of twl. CuPb long and narrow, reaching anal wing margin after 54.8% of twl. 1A narrow, reaching anal wing margin after 27% of twl. Cross vein pattern unsure due to overlapping of fore- and hindwings.

Remarks: The specimen MPSC 9841 originates from the same stratigraphic unit (Crato Formation) and general geographic region as the holotype of Cratolocustopsis cretacea . It preserves diagnostic features consistent with the original description and emended diagnosis of C. cretacea , including a forewing with two branches of CuA + CuPaα and two branches of M. The description of the additional specimen will hopefully provide reference for future comparative and systematic studies.