2017年7月30日 星期日
Atkinsonia parignipicta Wang, Guan & Sinev, 2016 擬白基緋展足蛾
擬白基緋展足蛾(Atkinsonia parignipicta)是展足蛾科(Stathmopodidae)的成員,目前僅知來自於大陸河南的一份正模標本,臺灣則為尚未正式紀錄之產地。本種的頭部為灰褐色,觸角櫛齒發達,猶如一把梳子,下唇鬚發達,前胸與中胸背方為鮮紅色,後胸為白色帶橙紅色鱗片,前翅狹長,鮮紅色底,前緣末端、外緣至後緣1/2處緣毛為黑色,外緣近臀角處有一條黑線,後翅基部為橙紅色,外側為黑褐色,緣毛主要為黑色,後緣有大塊透明區,腹部為黑色底,第三節背方有兩塊白斑,分離甚遠。緋展足蛾屬(Atkinsonia)的介紹可參考本網誌另一篇文章─後紅緋展足蛾。圖示臺灣產擬白基緋展足蛾外觀與正模標本和原始描述有些出入,例如:前者前翅僅一條黑線,後者則有兩條平行黑線,前者後翅有大面積紅色區,後者則全為黑褐色。經比較生殖器後,兩者並無顯著差異,故仍將此份標本鑑定為Atkinsonia parignipicta,未來仍需比較更多標本以確認本種的翅紋變異範圍。擬白基緋展足蛾與白基緋展足蛾(Atkinsonia ignipicta)外形近似,學名par-ignipicta即表示近似ignipicta,故將中文名取為擬白基緋展足蛾。根據文獻,兩種最大的差異在於前者前翅有兩平行黑線,後者則沿外緣有一條寬黑帶,惟目前擬白基緋展足蛾翅紋有變異,因此鑑定仍需藉助生殖器之比對。圖中個體來自南投縣仁愛鄉惠蓀林場,2015年7月。
A Brief Introduction
Up to date, there are two Atkinsonia known to be distributed in Taiwan and Atkinsonia parignipicta is the third and new to Taiwan fauna. Atkinsonia parignipicta is similar with A. parignipicta and proposed to be characteristic by the two longitudinal sub-parallel black streaks, however there is variation of wing pattern and further specimen examination is needed.
Reference
Wang SX, Guan W & Sinev SY. 2016. Taxonomic study of the genus Atkinsonia Stainton, 1859 (Lepidoptera, Stathmopodidae) in China, with descriptions of two new species. Zootaxa 4208(1): 46–60.
Cerace myriopa Meyrick, 1922 白基豹裳捲葉蛾
白基豹裳捲葉蛾(Cerace myriopa)是捲葉蛾科(Tortricidae)捲葉蛾亞科(Tortricinae)裳捲葉蛾族(Ceracini)的成員,目前僅知分布於臺灣與中國湖北、四川(Diakonoff, 1950; Yasuda, 1978)。本種的前額為黑色,頭頂為白色或黑色,觸角絲狀,胸部背方為黑色,有白色斑,前翅為黑色底,前緣至R脈間有許多白色縱紋,前緣於靠頂角處有一突起,中室有紅色斑直達外緣,R脈至後緣間有許多白色斑點,有些個體A1+A2脈從基部沿脈有白色條紋,沿外緣有紅色斑從頂角延伸到1A+2A脈末端,後翅為黃色底,靠翅基為白色,布有黑色斑紋,腹部主要為黃色,各節有黑色帶,前幾節依個體有不同程度的白色斑。裳捲葉蛾屬(Cerace)目前已知約有19種(http://www.tortricidae.com),主要分布於東方區的馬來亞(Malayan)和印中(Indo-Chinese)亞區,並往上延伸至古北區的日本、韓國(Yasuda, 1978; Byun et al., 2017);臺灣目前已記錄其中3種,除本種外,另有豹裳捲葉蛾與白襯裳捲葉蛾。圖中標本照採於2017年6月,臺南市楠西區,過往則有拉拉山的標本紀錄(Yasuda, 1978)。臺灣三種裳捲葉蛾屬的成員彼此之間前翅翅紋非常近似,網路上錯誤辨識的資訊相當多,茲整理三種的翅紋特徵比較如下:
1.後翅:白─白襯裳捲葉蛾
黃─豹裳捲葉蛾
白+黃─白基豹裳捲葉蛾
2.前翅前緣突起:有─白基豹裳捲葉蛾
無─白襯裳捲葉蛾和豹裳捲葉蛾
3.前翅中室紅斑:
狹窄,且中室至外緣紅斑內幾乎沒有白斑─豹裳捲葉蛾
略寬,且紅斑內皆有白斑─白基豹裳捲葉蛾和白襯裳捲葉蛾
4.外緣紅斑:僅頂角凸起處─白襯裳捲葉蛾
約外緣1/2─豹裳捲葉蛾
幾達臀角(1A+2A脈末端)─白基豹裳捲葉蛾
A Brief Introduction
Cerace is a day-flying tortricid genus with amazing large size and outstanding wing marking, widespread in Malayan and Indo-Chinese subregion and extension to Japan and Korea. Cerace myriopa is one of the three Cerace in Taiwan and could be recognized by the yellow hind wing with white base.
References
Byun BK, UH Heo & BW Lee, 2017. First discovery of the tribe Ceracini, with a newly recorded genus and species (Lepidoptera: Tortricidae) in Korea. Journal of Asia-Pacific Biodiversity 10(2): 228-231.
Diakonoff A, 1950. A revision of the family Ceracidae (Lepidoptera Tortricoidea). Bulletin of the British Museum Natural History (Entomology) 1: 171-219
Yasuda T, 1978. Records and descriptions of Asian Ceracini (Lepidoptera: Tortricidae). Transactions of the Lepidopterological Society of Japan (Tyō To Ga) 29(3): 117-128.
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