Canaea bibarra ( Chu & Wang, 1991 )

Huang, Lan-Lan, Owada, Mamoru & Wang, Min, 2015, Discovery of the male of Canaea bibarra (Lepidoptera: Thyrididae: Striglininae), Florida Entomologist 98 (1), pp. 200-200 : 200

Canaea bibarra ( Chu & Wang, 1991) ( Figs. 1–3 )

Phthina bibarra Chu et Wang 1991: 340 , 346, Fig. 20, pl. 2, Fig. 20; Zhu (Chu) & Wang 1996: 234-236, Fig. 186, pl. 15, Fig. 10.

SPECIMENS EXAMINED

CHINA, Hainan, Jianfengling National Nature Reserve, 900 m, 1 male, 23. V. 2004, Min Wang leg. Yinggeling Nature Reserve , 500 m ,

1 male, 26. VII. 2005, Liu-Sheng Chen leg. (in SCAU). VIETNAM, Thua Thien Hue , Back Ma, 1,200 m , 2 males, 7-11. VI. 2002, Mamoru Owada leg. (in NSMT and IEBR) .

MALE ADULT

Wingspan 27–30 mm. Head greyish white; antenna monopectinate, yellowish brown; labial palpus long, greyish brown, upturned. Thorax and tegula with yellowish brown scales. Abdomen yellowish brown, underside paler, fore tibia with furcella, hind tibia with two pairs of spurs. Forewing ground colour yellowish ochre, distal half brown with some irregular semitransparent spots, basal half whitish brown, middle part with an greyish brown stripe, near the stripe with a small crescent-shaped greyish brown stripe, oval-shaped semitranaparent spot in the middle of these two stripes; apical angle slightly round, fringe scales grey.

Hind wing with some irregular pale yellowish white spots, and two greyish brown stripes, one is longer in the middle, another is shorter near the outer margin of hindwing; basal area yellowish white, with some black brown lines formed as reticulation. Underside of both forewing and hindwing paler than upperside.

Male genitalia: Uncus long, tenuous, apex pointed; gnathos broad, just meeting in middle, not merging; tegumen broad, rectangleshaped; valva broad basally, tapering, apex slightly pointed, basal part slightly invaginate; costa sclerotized, with three processes, inner one long triangle, strongly toothed, central one short, and outer one longest, smooth, with Y-shaped apex; sacculus broad, with an arc-shaped incision, basala process of sacculus long, sclerotized; saccus exposure, V-shaped; aedeagus slightly slender, shrinking at middle, vesica membranous exposure.

1 Department of Entomology, College of Natural Resources & Environment, South China Agricultural University, Guangzhou 510642, China

2 Department of Zoology, National Museum of Nature and Science, Amakubo 4-1-1, Tsukuba,305-0005 Japan

DISTRIBUTION

China (Hainan), Vietnam (Thua Thien Hue) new record.

NOTES

The wing pattern of males from Hainan and Vietnam are identical with those of females ( Chu & Wang 1991, Fig. 20; Zhu (Chu) & Wang 1996, pl. 15, Fig. 10), and the ground color is paler. This species can be distinguished from other Canaea species by the oval-shaped semitranaparent spot in the middle of forewing. Jianfeng, the type locality of C. bibarra , is located in the southwestern coast of Hainan, and is distant ca. 280 km from Back Ma, Thua Thien Hue, across the sea of Tonkin Bay. The genus Canaea has not been recorded from Vietnam ( KonviČka et al. 1998).

The structure of male genitalia of C. bibarra is similar to that of C. ignotalis (Röber, 1891) from Sulawesi, Salajar and Buru, but distinguished from the latter by the longer uncus, the shape of sclerotized processes of costa, and the membranous vesica of aedeagus.The sclerotized patch in corpus bursae of female genitalia of C. bibarra ( Chu & Wang 1991, Fig. 20e) lacks rows of sclerotized plates, which are present (Whalley 1991, Figs. 50, 52) in C. ignotalis .

Figures

Figs. 1-3. 1. Male adult of Canaea bibarra Chu et Wang. 2. Male genitalia. 3. Aedeagus.