Arcofuzia cana, Wei, Dandan, Shih, Chungkun & Ren, Dong, 2012

Wei, Dandan, Shih, Chungkun & Ren, Dong, 2012, Arcofuzia cana gen. et sp. n. (Insecta, Blattaria, Fuziidae) from the Middle Jurassic sediments of Inner Mongolia, China, Zootaxa 3597, pp. 25-32 : 26-28

publication ID	https://doi.org/ 10.5281/zenodo.283202
DOI	https://doi.org/10.5281/zenodo.6180683
persistent identifier	https://treatment.plazi.org/id/03E287EE-581D-9E25-0CB5-949C0C04F87E
treatment provided by	Plazi
scientific name	Arcofuzia cana
status	sp. nov.

Treatment

Arcofuzia cana sp. nov.

( Figs. 1–4 View FIGURE 1 View FIGURE 2. A View FIGURE 3. A View FIGURE 4. A )

Type specimens: Holotype male ( Figs. 1 View FIGURE 1 , 2 View FIGURE 2. A ), CNU-BLA-NN-2011058, terminalia with forceps-like grasping cerci, a well-preserved specimen; paratype, likely male based on elongated abdominal shape, CNU-BLA-NN-2011012pc (part and counterpart), a relatively well-preserved complete specimen (terminalia not preserved).

Description: Large-sized, with body length 20.2 mm (excluding head), width of abdomen 4.9 mm. Head small with eyes projected beyond the head outline, inverted-triangular shape (length × width= 3.1 mm × 2.7 mm), extending beyond the pronotum slightly, antennal sockets conspicuous at sides, mouthparts distinct but unclearly preserved; pronotum length 4.1 mm, width 5.2 mm, elliptical, as wide as the body; abdomen with 7 segments preserved, thick in the middle of segments, narrowing posteriorly; terminalia with forceps-like grasping cerci ( Fig. 1 View FIGURE 1 B).

Right forewing of holotype ( Figs. 1 View FIGURE 1 , 2 View FIGURE 2. A ) length 14.9 mm, width 5.8 mm, conchostracan color spot present ( Fig. 1 View FIGURE 1 A); left forewing length 15.4 mm, width 5.3 mm; with small crossvein-like reticulations, wing venation rich, with 51 to 54 veins at margin ( Fig. 2 View FIGURE 2. A ); intercalary veins thick, distinct all over wing surface; cambered markings located near the apex of forewings, from anterior of R to the anterior of CuA, forming a crescent ( Fig. 1 View FIGURE 1 A); costal area very long (about 0.4 of wing’s length); Sc thick, without branches, curved upward and longer than clavus; R slightly curved and with 22 branches (Rs undifferentiated), reaching the wing apex with many veinlets branched; M branched basally and reaching the wing apex, with 6 to 9 branches; CuA gently curved, expanded with 13 or 14 branches, with some branches ending near wing apex; CuP strongly curved and simple; clavus short, less than a third of the wing’s length; A without branches, arc bending and with 7 or 8 veins; a diagonal kink present in anal field.

Length of hind wings 13.9 –14.9 mm; without pterostigma; with about 25 veins of remigium; Sc simple; R terminating to wing apex, differentiated into R1 with 3 branches and Rs with 10 to 12 branches; M almost straight to wing margin.

Length of front femora 2.3 mm, width of front femora 0.5 mm; length of middle femora 3.1 mm and tibiae 3.7 mm, width of middle femora 0.8 mm and tibiae 0.4 mm; length of hind femora 4.1 mm and tibiae 4.6 mm, width of hind femora 1.0 mm and tibiae 0.4 mm; legs gradually longer from the fore to the hind legs; hind leg with 5 spines preserved on the tibiae, length of spines 0.5–0.9 mm.

Paratype ( Figs. 3 View FIGURE 3. A , 4 View FIGURE 4. A ) a relatively well-preserved complete specimen except terminalia not preserved. Large-sized, with body length 18.3 mm as preserved (excluding head), width of abdomen 4.8 mm. Head small, inverted-triangular shape (length × width= 2.6 mm × 2.3 mm), extending beyond the pronotum slightly, antennal sockets conspicuous at sides, mouthparts distinct but unclearly preserved; pronotum length 4.5 mm, width 5.7 mm; abdomen with 8 segments preserved, thick in the middle of segments, narrowing posteriorly.

Right forewing length ( Figs. 3 View FIGURE 3. A , 4 View FIGURE 4. A ) 14.9 mm, width 5.2 mm; left forewing distorted during the fossilization process (length × width= 12.9 mm preserved × 6.0 mm preserved); with small crossvein-like reticulations ( Fig. 3 View FIGURE 3. A B), wing venation rich, with 39+ (left forewing) to 43 (right forewing) veins at margin; Sc thick, without branches, curved upward and longer than clavus; R slightly curved and with 16+ to 20 branches (Rs undifferentiated); M branched with 6 or 7 branches; CuA gently curved, expanded with 9 branches, with some branches ending near wing apex; A sometimes with branch ( Fig. 3 View FIGURE 3. A C), arc bending and with 5–6 veins.

Length of front femora 1.8 mm and tibiae 1.9 mm, width of front femora 0.6 mm and tibiae 0.4 mm; length of middle femora 2.9 mm and tibiae 3.1 mm, width of middle femora 0.9 mm and tibiae 0.4 mm; length of hind tibiae 5.2 mm, width of hind tibiae 0.5 mm; legs gradually longer from the fore to the hind legs; hind leg with 6 spines preserved on the tibiae, length of spines 0.4–0.9 mm.

Etymology: The name cana is after the Latin word canus meaning colour of gray, referring to the colour of markings on the wings.

Type locality: Daohugou Village, Wuhua Township, Ningcheng County, Inner Mongolia, China.

Type horizon: Jiulongshan Formation, Middle Jurassic.