Sanmai kongi Chen, Zhang, and B. Wang, 2016

Chen, Jun, Zhang, Haichun, Wang, Bo, Zheng, Yan, Wang, Xiaoli & Zheng, Xiaoting, 2016, New Jurassic tettigarctid cicadas from China with a novel example of disruptive coloration, Acta Palaeontologica Polonica 61 (4), pp. 853-862 : 855-857

Sanmai kongi Chen, Zhang, and B. Wang sp. nov.

Fig. 2 .

Etymology: In reference to the family name of Confucius (Kung Fu- Tsy), the founder of Confucianism.

Type material: Holotype, STMN48-1800a, b (part and counterpart), well-preserved adult female in lateral aspect with overlapped wings at the top of the body. Paratype, STMN48-1801, well-preserved adult male in lateral aspect with overlapped wings at the top of the body.

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

Type horizon: Upper Middle–lower Upper Jurassic Daohugou beds.

Material.— Type material only.

Diagnosis. —Compound eye nearly semicircular in lateral view. Forewing length/width ratio about 2.65; RA 1 long and slightly sinuous; RP fused with nodal line for a distance; M 1+2 short and straight; u3 about 0.25 wing length.

Description.— Holotype STMN48-1800: Body 22.3 mm long including forewing in repose. Compound eye large, nearly semicircular. Antenna partly preserved, scape slightly thicker than pedicel. Pronotum expanded, anterior half with tiny granular protuberances and posterior area transversely rugose. Mesonotum partly exposed, with posterior one-third area transversely rugose. Femora with tiny granules (or bases of thick setae?); tibiae densely setose, with distinct ridges; tarsi densely setose, with three tarsomeres. Fore femur strong; fore tibia slender, about 2/3 length of hind tibia, with one apical tooth visible; tarsus with apical tarsomere much longer than mid and basitarsomeres; one well-developed claw preserved. Mid femur as long as fore femur, but much slenderer than the latter; mid tibia largely missing. Hind femur strong, slightly shorter than fore and mid femora; hind tibia long and slender, with two extremely long lateral spines, with a row of apical teeth (six? visible); hind tarsus about 3/4 length of fore tarsus, with mid tarsomere slightly shorter than basi- and apical tarsomeres; two well-developed claws visible. Ovipositor ensiform, upcurved, adpressed to pygofer.

Forewing length about 18.8 mm, width about 7.1 mm. Dark membrane colored with light and irregular speckles and longitudinal stripes. Costal area long and narrow, with ratio of length to width about 5.2. Clavus broad and arched, with ratio of length to width about 3.9. Nodal line distinct. Eight apical cells. Stem ScP+R+M+CuA thick, bifurcating into ScP+R and M+CuA at basal 0.23 wing length. Stem ScP+R straight, bifurcating into ScP+RA and RP at basal 0.34 wing length. RA with two terminations; RA 1 long and slightly sinuous; RA 2 geniculate at junction with crossvein ir, subparallel to RA 1, and curved apically. RP fused with nodal line for a distance, slightly curved at junction with crossvein r-m, and re-curved at junction with crossvein ir. Stem M+CuA bifurcating just beyond junction with crossvein cua-cup. Stem M straight, bifurcating into M 1+2 and M 3+4 basal of middle of wing length. u3 about 0.25 wing length. Vein M 1+2 short and straight, bifurcating at about basal 0.64 wing length. Vein M 3+4 simple, connected with M 2 by crossvein im. Stem CuA long and sinuous, bifurcating into CuA 1 and CuA 2 just beyond nodal line. CuA 1 long, geniculate at junction with crossvein m-cua. Distal section of CuA 2 running along wing margin. CuP long and straight. A 1 sinuous. A 2 short and strongly curved.

Paratype STMN48-1801 Body length as preserved 21.7 mm long including forewing in repose. Postclypeus ornamented with distinct transverse grooves. Mid tibia slen- der, slightly longer than fore tibia. Pygofer largely missing, but well-developed aedeagus visible. Forewing length about 17.5 mm, width about 6.6 mm; venation in general as in holotype; coloration pattern not preserved.

Remarks. —The new species is similar to S. mengi Chen, Zhang, and B. Wang sp. nov., but differs from the latter in possessing long and slightly sinuous RA 1, short and straight M 1+2, and u3 about 0.25 wing length for tegmen.

Stratigraphic and geographic range. —Upper Middle–lower Upper Jurassic; Daohugou Village, Ningcheng County, Inner Mongolia, China.

Figures

Fig. 2. Hairy cicada Sanmai kongi sp. nov. from the upper Middle–lower Upper Jurassic Daohugou beds. A. Holotype STMN48-1800a. Photograph under alcohol (A1), explanatory drawing (A2). Hind leg (A3). Enlargement of apical teeth set of hind tibia (A4). Photomicrograph of ovipositor (A5). B. Paratype STMN48-1801. Photograph (B1), photomicrograph of male genitalia (B2). Abbreviations: A, anal vein; CuA, anterior branch of the cubitus vein; CuP, posterior branch of the cubitus vein; M, media vein; RA, anterior branch of the radial vein; RP, posterior branch of the radial vein; ScP, posterior branch of the subcosta vein; u, ulnar cell.