AnimaliaHemipteraCicadidaeHouZehaiLiQinglongWeiCongMorphology and identification of the final instar nymphs of three cicadas (Hemiptera, Cicadidae) in Guanzhong Plain, China based on comparative morphometricsZookeys10720142014425335010.3897/zookeys.425.7897 Platypleura kaempferi (Fabricius, 1794)Figs 2–5Tettigonia kaempferi Fabricius, 1794: 23Cicada kaempferi (Fabricius): Walker 1850: 117Platypleura kaempferi (Fabricius): Butler 1874: 189Platypleura fuscangulis Butler, 1874: 189Platypleura hyalino-limbata Signoret, 1881: 62Platypleura repanda Uhler, 1896: 276 (nec Linnaeus)Platypleura tsuchidai Kato, 1936: 758Platypleura retracta Liu, 1940: 74Measurements

(mm or degree). Male (n = 10): BL 19.0 (18.1–19.6), PCL 3.2 (3.1–3.5), PCW 3.3 (3.2–3.5), CL 2.2 (2.1–2.4), HW 7.5 (7.3–7.8), PL 4.7 (4.3–5.0), PW 9.2 (8.9–9.6), PML 10.0 (9.4–10.5), WL 7.4 (7.0–7.8), FL 4.1 (3.9–4.3), TL 4.5 (4.2–4.6), FA 77.1 (76.1–78.1).

Female (n = 10): BL 18.3 (17.7–18.6), PCL 3.1 (2.9–3.4), PCW 3.2 (3.1–3.4), CL 2.1 (2.0–2.2), HW 7.3 (7.1–7.7), PL 4.6 (4.2–4.9), PW 8.9 (8.6–9.2), PML 9.8 (8.9–10.2), WL 7.2 (6.9–7.6), FL 4.0 (3.8–4.2), TL 4.3 (4.1–4.5), FA 77.2 (76.4–78.8).

Description.

Body (Fig. 2E, F) brown, well curved in lateral view, with sparse setae mainly on venter.

Head (Fig. 2F). Somewhat triangular in dorsal view; crown including white compound eyes about three times wider than long and slightly wider than the anterior margin of the pronotum. Antenna brown, filiform. Postclypeus prominently swollen, covered with dense brown pile. Rostrum extending beyond posterior coxae.

Thorax (Fig. 2E, F). Pronotum broad, paramedian and lateral fissures distinct, pronotal collar developed, posterior margin distinctively concave medially in dorsal view. Mesonotum about as wide as pronotum, with two small scutal depressions on disc. Metanotum very small. Fore wing bud developed, reaching to middle of 3rd abdominal segment laterally, hind wing bud slightly developed.

Leg (Figs 5D, 6C, F). Generally dark brown. Fore femur with femoral formula 2-1-7: posterior tooth long and sharp, accessory tooth robust and sharp, intermediate tooth with projection in one of its sides; femoral comb usually with seven teeth, the first tooth distinctly larger than the second tooth. Fore tibia arched, flattened laterally; apical tooth long; point of blade of tibia large and long, tooth-like, separated from apical tooth of blade by a strong incision. Apex of tibia usually with four spines in both mid and hind legs, but sometimes with a very small accessory spine. Pretarsi of all legs well developed into a pair of claws of unequal sizes.

Abdomen (Fig. 4G–I). Size varying depending on the development of the nymph. In female, 8th and 9th sternites with two sharp posterior marginal protrusions. In male, 9th sternite almost entirely concealed by 10th sternite, six protrusions present on surface: two triangular protrusions adjacent to posterior margin, and four rounded protrusions on posterior margin; 10th sternite with a very large, medial, globular protrusion adjacent to anterior margin.

Variations of femoral comb.

Twenty percent (4/20) of the individuals studied with femoral comb with eight teeth, instead of seven teeth.

Final instar nymphs. A Cryptotympana atrata, lateral view of body B Cryptotympana atrata, dorsal view of body C Meimuna mongolica, lateral view of body D Meimuna mongolica, dorsal view of body E Platypleura kaempferi, lateral view of body F Platypleura kaempferi, dorsal view of body. Scale bars = 5.0 mm.

Antennae of final instar nymphs. A Cryptotympana atrata B Meimuna mongolica C Platypleura kaempferi. Scale bars = 0.5 mm.

Abdominal apex in ventral view of final instar nymphs. A Cryptotympana atrata, female B and C Cryptotympana atrata, male D Meimuna mongolica, female E and f Meimuna mongolica, male G Platypleura kaempferi, female H and I Platypleura Kaempferi, male. Scale bars = 1.0 mm.

Left foreleg of final instar nymphs. A Cryptotympana atrata, inner view B Cryptotympana atrata, outer view C Meimuna mongolica, outer view D Platypleura kaempferi, outer view. acf, accessory tooth of femur; apt, apical tooth of tibia; bt, blade of tibia; f, femur; fc, femoral comb; itf, intermediate tooth of femur; pbt, point of blade of tibia; ptf, posterior tooth of femur; t, trochanter; ta, tarsus; ti, tibia. Scale bars = 1.0 mm

Spines at the apex of mid and hind tibiae of final instar nymphs. A mid tibia of Cryptotympana atrata B mid tibia of Meimuna mongolica C mid tibia of Platypleura kaempferi D hind tibia of Cryptotympana atrata E hind tibia of Meimuna mongolica F hind tibia of Platypleura Kaempferi. Scale bars = 1.0 mm.

WalkerF (1850) List of the specimens of homopterous insects in the collection of the British Museum. Part 1.British Museum, London, 260 pp.