Cassida juglans Gressitt, 1942

Sekerka, Lukáš, Jia, Fenglong, Pang, Hong & Borowiec, Lech, 2016, Cassidinae (Coleoptera: Chrysomelidae) types deposited at Sun Yat-sen University, Guangzhou, China, Zootaxa 4084 (1), pp. 50-78 : 57-58

Cassida juglans Gressitt, 1942

( Fig. 6 )

Cassida juglans Gressitt, 1942: 4 .

Type locality. China, Zhejiang prov., Deqing Co., Moganshan, approx. 30.60°N, 119.89°E.

Original type series. Holotype (Museé Heude, Shanghai) and one paratype with unspecified depository.

Type material examined. Holotype, glued: ‘ 6. I. 36 [hw] | O. PIEL, coll. [w, p, cb] || Mokan Shan | Musée Heude [w, p, cb] || M-1046 [w, hw, cb] || HOLOTYPE | CASSIDA [hw] | JUGLANS [hw] | J.L.Gressitt [r, p + hw by Gressitt, cb] || CASSIDA | ( TAIWANIA ) | JUGLANS | GRESS. | J.L.G. Det. 1950 [w, hw by Gressitt, cb] || En- 289743 | [Data Matrix barcode] SYS [w. p, cb]’.

Current status. New synonym of Cassida concha Solsky, 1872 .

Remarks. Cassida juglans remained since its description rather enigmatic as Gressitt (1942) compared it to C. nigriventris Boheman, 1854 , probably mainly because of combination of uniformly pale yellow dorsum and black ventral side, and later transferred the species to subgenus Taiwana Spaeth, 1913 ( Gressitt 1952). Chen et al. (1986) probably merely followed the original description as they retained C. juglans in Taiwana while the holotype lacks features typical for Taiwania such as transparent explanate margin with honeycomb structure. The holotype of C. juglans is conspecific with C. concha and is synonymized with it here.

The species was recorded only once since is description from Korea ( An et al. 1985). Cho & Borowiec (2014) noted that the record most likely belong to a different species, however, they were not able to locate the original voucher specimen(s).

Gressitt (1942) stated that the holotype was collected on ‘ May 6, 1936 ’ while the specimen bears date 6th January 1936 what is probably result of an error as all other characters and data are in accordance with the primary description.

Figures

FIGURES 4 – 11. 4. Cassida expansa Gressitt, 1952 (holotype, 6.7 mm); 5. C. imitatrix Gressitt, 1952 (holotype, 4.8 mm); 6. C. juglans Gressitt, 1942 (holotype, 4.8 mm); 7. C. inflata Gressitt, 1952 (holotype, 7.0 mm); 8. C. laticollis Gressitt, 1952 (holotype, 6.0 mm); 9. C. spaethi Gressitt, 1942 (holotype, 6.9 mm); 10. Glyphocassis tetrasticta Gressitt, 1942 (holotype, 5.4 mm); 11. G. trilineata szechuana Gressitt, 1952 (holotype, 5.5 mm).