Procercopidae Handlirsch, 1906 is an extinct family of hemipterous insects from the Late Triassic to Early Cretaceous in Euro-Asia and Australia
There is no consensus on the interpretation of vein nomenclature in Cicadomorpha. We tentatively followed the traditional terminologies with slight modifications
Order Hemiptera Linnaeus, 1758.
Suborder Cicadomorpha Evans, 1946.
Superfamily Cercopoidea Leach, 1815.
Family Procercopidae Handlirsch, 1906.
Genus
Antennae half the length of fore tibia. Rostrum moderate, extending to mid coxae. Pronotum hexagon, widest at middle; its posterior margin straight. Fore femur shorter than hind femur. Hind tibia slender, about 1.8 times as long as hind femora. Hind tibia with a short lateral spine at 3/5 its length. Hind tibia with two rows of apical denticles, and each row consisting of about six teeth. Both basitarsomere and mid tarsomere of hind tarsi with a row of small teeth apically. Ovipositor slender, curved upwards.
Tegmen elongate, length 20.5 mm, width 7.1 mm, length/width ratio 2.9. Costal margin convex at about basal 0.4 wing length. Posterior margin convex at distal third of the wing. Vein Sc obscure, arched and fused with vein R + M at basal 0.18 wing length. Stem R + M branching into veins Sc + R and M at the point of vein Sc fused with vein R + M. Vein Sc + R branching into veins Sc + RA and RP at basal 0.35 wing length. Branch Sc + RA sinuous, with six branches, and connected with vein RP by a transverse crossvein r at basal 0.87 wing length. Branch RP connected with branch M1+2 by a transverse crossvein r-m at basal 0.81 wing length, and bifurcating just distal of crossvein r. Vein M fused with vein CuA for a very short distance, and then branching into veins M1+2 and M3+4 at basal 0.76 wing length. Vein M1+2 bifurcating at basal 0.86 wing length. Vein M3+4 bifurcating at basal 0.80 wing length. Vein M3+4 connected with vein CuA1 by an oblique crossvein m-cua at basal 0.77 wing length. Vein CuA curved anteriorly at crossvein m-cua, branching into veins CuA1 and CuA2 at basal 0.66 wing length. Vein CuA1 curved anteriorly, and a little longer than vein CuA2. Vein CuP straight, ending at the beginning of the distal fourth of the wing, forming a long clavus. Vein Pcu slightly curved, ending at basal 0.6 wing base. Tegmen membrane with distinct granules.
Hindwing partly preserved. Vein R branching into veins RA and RP at about basal fourth of the wing. Vein M bifurcating into veins M1+2 and M3+4 at about middle of wing. Vein RP connected with branch M1+2 by a crossvein r-m slightly distal of bifurcation of vein M. Vein CuA branching into veins CuA1 and CuA2 basal of bifurcation of vein M. Branch CuA1 connected with vein M by a crossvein m-cua just distal of bifurcation of vein CuA.
Paratype NIGP149550. Almost complete adult in lateral aspect with wings preserved at top of the body. Body dark, length about 21 mm. Ocelli invisible. Eyes oblong, higher than wide. Antennae half the length of fore tibia; scape thick and short; pedicel thinner than scape; flagellum with probable five segments. Vertex shorter than pronotum. Postclypeus convex, with distinct transverse grooves (muscle attachments). Rostrum moderate, extending to mid coxae. Pronotum rugose, hexagon, widest at middle, posterior margin almost straight. Tegmen length 20.1 mm, width 6.8 mm, length/width ratio 3.0. Abdomen pointed posteriorly, eight segments visible. Fore femur shorter than hind femur. Fore tibia about twice as long as fore femur. Hind tibia slender, about 1.8 times as long as hind femur. Hind tibia with a short lateral spine at 3/5 its length.
Paratype NIGP149551. Adult in dorsal aspect with wings obscured. Body dark, length about 21 mm. Head narrower than pronotum. Pronotum rugose, hexagon, widest at middle, width about 6 mm; median length 3.2 mm, about twice of length of vertex in mid line; its posterior margin almost straight. Mesoscutellum triangular, median length 2.2 mm. Tegmen length 20.8 mm.
Paratype NIGP149552. Body strongly deformed with a hind leg visible. Tegmen and hindwing overlapped. Tegmen with apex missing and basal part destroyed, length about 22 mm, width 7.2 mm, length/width ratio 3.0. Venation in general as in holotype. Hind tibia with a short lateral spine at 3/5 its length. Two rows of apical denticles in hind tibia, and each row consisting of about six teeth. Both basitarsomere and mid tarsomere of hind tarsi with a row of smaller teeth apically (about 10 teeth); basitarsomere slightly longer than mid tarsomere; basitarsomere slightly shorter than apical tarsomere.
Specimen NIGP149553. Body and tegmina obscure. Tegmen length about 18.9 mm, width 6.7 mm, length/width ratio 2.8.
Specimen NIGP149554. Almost complete adult in lateral aspect with wings preserved at top of the body. Body dark, length about 20 mm. Abdomen pointed posteriorly. Tegmen length 19.4 mm, width 6.4 mm, length/width ratio 3.0.
Specimen NIGP149555. Body and tegmina obscured. Tegmen length about 22 mm, width 7.8 mm, length/width ratio 2.8.
We sincerely thank two anonymous reviewers for critical comments on the manuscript. This research has been financially supported by the Major Basic Research Projects (2006CB806400) of MST of China, and the National Natural Science Foundation of China (40872015, 40523004, 40632010).
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