Vrtula sama, Vršanský, 2008

Vršanský, Peter, 2008, New blattarians and a review of dictyopteran assemblages from the Lower Cretaceous of Mongolia, Acta Palaeontologica Polonica 53 (1), pp. 129-136 : 133

Vrtula sama sp. nov.

Fig. 3 .

Derivation of the name: Shortened from Elisama meaning alone; also in Slovakian to be in love with, alluding to its unique dominance in the Shin−Khuduk assemblage.

Holotype: PIN 3664 /2216. Isolated right forewing.

Type locality: Shin−Khuduk, Central−Gobi aymag, Mongolia.

Type horizon: Shin−Khuduk Formation, Lower Cretaceous.

Additional material: Forewings: PIN 3664/ 2206, 2219, 2216, 2224, 2215, 2218, 2214c, 2225, 2212. Hindwings: PIN 3664/ 2203, 2204, 2205±, 2207= 2210, 2209, 2211, 2213, 2220, 2226. Complete specimens: PIN 3664/ 2201, 2202, 2208, 2217 larva, 2222.

Description.—Body width up to 3.4 mm. Forewing length/ width 8.0–14.0/ 2.5–3.3 mm. Sc simple; R slightly curved, with 12–17 branches; M 3–4; CuA 5–8, cubital area with dark spot. Clavus with about 7 simple A. Hindwing Sc 1; R1 4–6; RS 6–8; M 3–5; CuA 6–7, CuP simple. A1 branched (A2 and veins of the vannus not preserved).

Figures

Fig. 3. Blattulid cockroach Vrtula sama gen. et sp. nov. A. PIN 3664/2201, a complete specimen. B. Holotype, PIN 3664/2216; photograph (B1) and explanatory drawing (B2). C. PIN 3664/2220, a hindwing: 9 mm; photograph (C1) and explanatory drawing (mirrored) (C2). All from Shin−Khuduk, Mongolia. Early Cretaceous. Abbreviations: A, anal; CuA, cubitus anterior; CuP, cubitus posterior; M, media; R, radius; R1, radius anterior; Sc, subcosta.