Parelcana pulchmacula, Tian, He, Gu, Jun-Jie, Yin, Xiang Chu & Ren, Dong, 2019

Tian, He, Gu, Jun-Jie, Yin, Xiang Chu & Ren, Dong, 2019, The first Elcanidae (Orthoptera, Elcanoidea) from the Daohugou fossil bed of northeastern China, ZooKeys 897, pp. 19-28 : 19

Parelcana pulchmacula sp. nov. Fig. 2

Diagnosis.

ScP with 6-8 branches ending in anterior margin; CuA very short and fusion with CuPaα before ScA ends in anterior margin, CuA+CuPaα long and S-shaped; occurrence of two big and round dark spots in distal half of wing and one small spot covering the area of CuPa.

Etymology.

From the latin ‘Pulch-’ for beautiful and ‘macula’ for patches, referring to the beautiful spots and coloration of the forewing.

Type materials.

Holotype, CNU-ORT-NN2016041; Paratypes, CNU-ORT-NN2016035; CNU-ORT-NN2016036; CNU-ORT-NN2016042.

Locality and age.

Daohugou Village, Shantou Township, Ningcheng County, Inner Mongolia, China; Jiulongshan Formation, Middle Jurassic.

General description.

Forewing 18.4-20.9 mm long and 4.3-5.0 mm wide (maximum width recorded). Costal area long and narrow; CP nearly straight, ending in anterior margin after the forking of M+CuA, generating numerous distinct oblique branches ending in the anterior margin; ScA slightly curved, ending in the anterior margin before 1/3 of total wing length; ScP reaching anterior margin at nearly half-length of wing and generating 6-8 oblique branches ending in the anterior margin; stem R+M+CuA forking into R and M+CuA after the divergence point of CuPa; stem R long and distinctly strong, branched into RA and RP near the mid-length of wing; area between ScP and R narrow; RA slightly curved towards posterior wing margin before its first branch, reaching anterior margin close to apex with 16-18 oblique branches; RP with 10-12 comb-like branches reaching wing margin, most of them reaching posterior margin, with several distal terminals dichotomizing and reaching anterior margin; area between RA and RP relatively wide; M forking into MA and MP near to the end of ScA; MA branching into MA1 and MA2 close to the end of ScP; MA1 with 2 branches, with the first fused with RP; MP simple, originates after ScA ends at anterior margin; CuA extremely short, 0.16 to 0.20 mm long, originates before CP ends at anterior margin; CuA almost vertical against the posterior margin; free CuPa short, 0.23 to 0.38 mm long, directed to anterior wing margin, forking into CuPaα and CuPaβ before ( Fig. 2 A–D ) or at the level ( Fig. 2G, H ) of the bifurcation point of M+CuA; free part of CuPaα approximately three times longer than CuPa, then fused with CuA; CuA+CuPaα simple, long and S-shaped, reaching posterior margin at 2/3 of wing length; CuPaβ simple, similar to CuPaα in shape; CuPb simple; areas between CuPaβ–CuPb and CuPb–AA 1 narrow; CuPaβ, CuPb, and AA1 detached each other; AA1 strong and straight; area between branches of RP and M covered with simple and straight crossveins. Dark colorations cover the areas between ScP–R and RA–anterior margin, and also along several rows of the crossveins between branches of RP and M; occurrence of two big and round spots in distal half of wing, one located between the branches of RP, one located at the boundary of RP branches and MA1; one small round spot covers the area of CuPa.

Figures

Figure 2. Photo and line drawing of Parelcana pulchmacula sp. nov. A, B holotype, CNU-ORT-NN 2016041 C, D CNU-ORT-NN 2016035 E, F CNU-ORT-NN 2016042 G, H CNU-ORT-NN 2016036. The inclined and dotted lines in the middle of the wings of D and F represent the cracks in the specimen. The dotted line on the wing venation represents the imaginary line of the wing. Scale bar: 2 mm.