Macroplea japana ( Jacoby, 1885 )

Lou, Qiaozhe, Yu, Peiyu & Liang, Hongbin, 2011, Two new species of Macroplea Samouelle (Coleoptera: Chrysomelidae: Donaciinae) from China, with a key to all known species, Zootaxa 3003, pp. 1-21 : 15-16

Macroplea japana ( Jacoby, 1885) .

( Figs 52 , 54–56 , 60, 64 , 68 , 72–75 )

Specimens examined. Total 40 specimens: 1 specimen, “Jiangsu, Wuxi, 1951. III.30, Kailing Xia coll.”; 1 specimen, same locality with dating “1951. IX.10 ”; 5 specimens, same locality with dating “1951. XII.7 ”; 6 specimens, same locality with dating “1952. II.4 ”; 24 specimens, same locality with dating “1952. III.20 ”; 2 specimens, “Hebei, Tanghai, 2000.V–VI, by light trap”; 1 male, “Department of Plant Protection, Beijing Agricultural University. Logosun Mountain, Wuchang Town, by light trap. Ruihua Jin coll., 1959. VIII.28 ”.

Distribution. China (Heilongjiang, Hebei, Jiangsu, Hubei), Japan, East Siberia.

Host plant. Unknown.

Biology. The two adults of M. japana from Hebei and one adult from Hubei were collected by light trap, indicating possibility of flight in this species. Light trap records were also found for Neohaemonia species ( Askevold, 1988: 373).

Remarks. Kölsch et al. (2006) recorded M. japana in Heilongjiang, China.

M. japana was treated as a subspecies of M. mutica by workers like Dubieshko (1973) and Kimoto & Takizawa (1994). However, Hayashi & Shiyake (2001) revived its species status after studying the holotype.

In 2006, Medvedev described M. skomorokhovi from Primorskii Territory (Russian Far East). Based on the original description, it differs from M. japana in having round elytral apical sutural angle (see Medvedev, 2006: Fig. 5 ) (angulate or protruding in M. japana ). However, in a recent personal communication, Dr. Medvedev has informed us that his illustration is not accurate: the sutural angle of M. skomorokhovi is, in fact, angulate. After comparing the types, Dr. Medvedev has opined that M. skomorokhovi is a junior synonym of M. japana , and he will correct the error through a publication later.

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Figures

FIGURES 50 – 53. Macraplea spp. 50. M. appendiculata from Xinjiang, male; 51. M. pubipennis from Ningxia, female; 52. M. japana from Jiangsu, female; 53. M. mutica from Tianjin, female. Scale lines = 5.0 mm.

FIGURES 54 – 59. Head, prothorax and pronotum of Macroplea spp. 54 – 56. M. japana from Jiangsu; 57. M. pubipennis from Ningxia; 58. M. appendiculata from Xinjiang; 59. M. mutica from Tianjin; 54. Head and prothorax, lateral view; 55. Vertex, dorsal view; 56 – 59. Pronotum, dorsal view. Scale lines = 0.5 mm.

FIGURES 60 – 67. Elytron of Macroplea spp. 60, 64. M. japana from Jiangsu; 61, 65. M. pubipennis from Ningxia; 62, 66. M. appendiculata from Xinjiang; 63, 67. M. mutica from Tianjin. 60 – 63. Left elytron, middle part; 64, 66, 67. Apex of left elytron; 65. Apexes of both elytra. Scale lines = 0.2 mm.

FIGURES 68 – 71. Tarsus of Macroplea spp. 68. M. japana from Jiangsu; 69. M. pubipennis from Ningxia; 70. M. appendiculata from Xinjiang; 71. M. mutica from Tianjin. 68, 70, 71. Right metatarsus; 69. Left protarsus. Scale lines = 0.5 mm

FIGURES 72 – 75. Macroplea japana from Jiangsu. 72. Tegmen, dorsal view of cap; 73, 74. Median lobe with endophallus in it (73. Dorsal view; 74. Lateral view); 75. Endophallus in median lobe, dorsal view. Scale line = 0.5 mm.

FIGURES 5 – 20. Macroplea huaxiensis sp. nov. 5 – 13, 17, 18. Male; 14 – 16, 19, 20. Female. 5. Pronotum, dorsal view; 6. Head, dorsal view; 7. Head, lateral view; 8. Left elytron, middle part; 9. Right metatibia, lateral view; 10. Right metatarsus, lateral view; 11. Mouth parts, ventral view; 12. Apex of left elytron; 13. Antenna; 14. Pronotum, left lateral view; 15. Right metatibia, lateral view; 16. Left profemur, ventral view; 17, 19. Apical abdominal sternum; 18, 20. Pygidium. Scale lines: a = 0.5 mm. (Figs 5 – 10, 12, 14 – 20); b = 1.0 mm. (Fig. 13); c = 0.5 mm. (Fig. 11).