Pagaronia tridens M.Hayashi & Arai, 1990

Kamitani, Satoshi, Higuchi, Toshiyuki & Okudera, Shigeru, 2012, Taxonomic study of the protecta - group in the genus Pagaronia Ball (Hemiptera, Cicadellidae, Evacanthinae) from Japan, Zootaxa 3343, pp. 1-15 : 9-11

Pagaronia tridens M.Hayashi & Arai, 1990

( Figs. 4 , 40–43 )

Pagaronia tridens Hayashi & Arai, 1990: 7 , figs. 2, 12, 14–21.

Taxonomic note. This leafhopper was described from the male holotype and 50 paratypes collected from two neighboring localities around Mt. Fuji, central Honshu. Through our recent field investigation, we found the species at additional 25 localities in Shizuoka and Yamanashi Prefectures. In the male genitalia, Pagaronia tridens has a trifurcated inner process of the pygofer lobe ( Fig. 40 ) and a slender ventral projection of the aedeagus as long as the aedeagal shaft. In these morphological characters, we recognized three regional variations ( Fig. 4 ). In those collected around Mt. Fuji including the type locality, the pygofer has the inner process bifurcate dorsally and centrally in the basal half; the ventral branch is forked near the base of process. The aedeagus usually has no process, but sometimes has a pair of tiny processes near the dorsal base ( Fig. 41 ). In the central area of Shizuoka Prefecture, which is the western area of Mt. Fuji, the pygofer has the inner process bifurcate dorsally and centrally near the basal half of the process; the ventral branch is forked at the base of the process. The aedeagus often has a small process near dorsal base of aedeagus ( Fig. 42 ). In the western part of the distributional range, the dorsal, central and ventral branches fork near the base of process. The pygofer lobe is slightly shorter than those from the other two localities. The aedeagus sometimes has the ventral projection shorter than the aedeagal shaft ( Fig. 43 ). These three regional variations of male genitalia are usually distinguishable from each other, but several specimens show an intermediate condition.

Body length (mean). ď, 8.0–9.0 mm (8.6 mm); Ψ, 8.8–9.7 mm (9.2 mm).

Additional material. [Shizuoka Pref.] 1ď 1Ψ (SUU), Myôjin-tôge Pass (alt. 900 m), Oyama, 23. VI. 1988, M. Hayashi; 3ď 4Ψ (SUU), same data except 19. VI. 2008, M. Hayashi et al.; 1ď (SUU), same data except 12. VII. 2008; 2ď 1Ψ (SUU), Tarôbô (alt. 1,240 m), Gotenba, Mt. Fuji, 1. VIII. 1979, M. Hayashi; 2ď 1Ψ (SUU), same data except 30. VIII. 1990, M. Hayashi et al.; 3ď 2Ψ (SUU), Awakura (alt. 1,030 m), Fujinomiya, Mt. Fuji, 1. VII. 1991, M. Hayashi et al.; 1ď 2Ψ (SUU), same data except 17. VII. 1991; 2ď ( ELKU), Tanuki-ko, Inokashira, Fujinomiya, 12. VI. 2010, S. Okudera; 3ď 5Ψ (SUU), Kitamatsuno, Fuji, 30. V. 2006, S. Okudera; 1ď ( ELKU), Hikagezawa, Umegashima, Aoi-ku, Shizuoka, 8. VI. 2008, S. Okudera; 5ď 7Ψ ( ELKU), Magosajima, Aoi-ku, Shizuoka, 9. VI. 2010, S. Okudera; 1ď 5Ψ ( ELKU), Umegashima-Ôshiro, Aoi-ku, Shizuoka, 9. VI. 2010, S. Okudera; 2ď ( ELKU), Utogi, Aoi-ku, Shizuoka, 9. VI. 2010, S. Okudera; 1ď 4Ψ ( ELKU), Hirano, Aoi-ku, Shizuoka, 8. VI. 2008, S. Okudera; 29ď 8Ψ ( ELKU), Hirayama, Aoi-ku, Shizuoka, 8. VI. 2008, S. Okudera; 17ď 16Ψ (SUU), Mt. Monju-dake, Aoi-ku, Shizuoka, 14. VI. 2004, S. Okudera; 1ď (SUU), Okusenmata, Aoi-ku, Shizuoka, 12. VI. 2004, S. Okudera; 2ď ( ELKU), Yokosawa, Aoi-ku, Shizuoka, 9. VI. 2008, S. Okudera; 2ď 7Ψ ( ELKU), Sakamoto, Aoi-ku, Shizuoka, 10. VI. 2010, S. Okudera; 4ď 5Ψ ( ELKU), Ashikubo-kuchigumi, Aoi-ku, Shizuoka, 8. VI. 2008, S. Okudera; 5ď 4Ψ ( ELKU), Shinma, Aoi-ku, Shizuoka, 10. VI. 2010, S. Okudera; 9ď 7Ψ ( ELKU), Ôhira, Shimizu-ku, Shizuoka, 25. V. 2009, S. Okudera; 1ď 1Ψ ( ELKU), Taru Pass, Nakagôchi, Shimizu-ku, Shizuoka, 25. V. 2009, S. Okudera; 4ď 2Ψ ( ELKU), Nakagôchi, Shimizu-ku, Shizuoka, 25. V. 2009, S. Okudera; 4ď 2Ψ (SUU), Nishizato, Shimizu-ku, Shizuoka, 14. VII. 2004, S. Okudera; 4ď 3Ψ ( ELKU), Yoshiwara, Shimizu-ku, Shizuoka, 25. V. 2009, S. Okudera; 2ď 2Ψ (SUU), Tokura, Shimizu-ku, Shizuoka, 28–29. V. 1990; 2Ψ (SUU), same data except 18–19. VI. 1990 (collector unknown); 2ď 1Ψ ( ELKU), Nihondaira, Shimizu-ku, Shizuoka, 22. V. 2008, S. Okudera. [Yamanashi Pref.] 1ď (SUU), Manzawa, Nanbu, 29. V. 2006, S. Okudera.

Distribution. Japan (central Honshu: Shizuoka and Yamanashi Prefectures).

Figures

FIGURE 4. Distributional map of the Pagaronia species belong to the protecta - group.

FIGURE 40. Left inner pygofer process of Pagaronia tridens. Scale; 0.3 mm

FIGURES 41 – 43. Aedeagus of Pagaronia tridens in lateral view. Scale; 0.3 mm