Revision of Asian species of the Drosophila melanica species group (Diptera: Drosophilidae), with a description of a new species from Vietnam
Revision of Asian species of the Drosophila melanica species group (Diptera: Drosophilidae), with a description of a new species from Vietnam
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修订了黑腹果蝇物种组的亚洲物种（双翅目：果蝇科），并描述了来自越南的新物种
DOI：
10.1111/ens.12028
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发表时间：
2013
影响因子：
0.9
通讯作者：
H.
中科院分区：
文献类型：
--
作者：
Suwito;A.;Toda;M.;Takamori;H.;Harada;K. and Watabe;H.
本文记述黑果蝇种组一新种，Drosophila denruoiSuwito & Watabe，sp. nov.是在越南北方发现的通过杂交试验证明，该种与其它形态相似的种之间存在完全的生殖隔离。邓若氏杜父鱼幼虫神经节细胞具有2n= 12条染色体，由4对近端着丝粒染色体、1对中部着丝粒染色体和1对微小染色体组成。这是最大数量的近端着丝粒染色体的组中，这意味着该物种具有最原始的染色体构型的黑素类群。根据杂交实验和形态学观察结果，曾被认为是Drosophila tsigana Burla & Gloor，1952的异名的Drosophila pengiOkada & Kurokawa，1957与Drosophila tsigana有区别，因此，Drosophila pengiis复活为黑色类群的一员。我们将缅甸中部的Drosophila bisetataToda，1988与D.pengi进行了同源性分析。此外，来自中国西南部贵州的一个种群也被鉴定为彭氏丹蚜，这些来自缅甸中部和中国西南部的种群具有彭氏丹蚜的诊断特征。同时，再次确认了北海道种群与欧洲D. tsigana的种属同一。此外，另一个种Drosophila longiserrataToda，1988描述于缅甸中部，与中国的Drosophila aferTan，Hsu & Sheng，1949在核型和外部形态上完全相同。
A new species of theDrosophila(Drosophila)melanicaspecies group (Diptera: Drosophilidae),Drosophila denruoiSuwito & Watabe, sp. nov., is described from northern Vietnam. It is proved by crossing experiments that reproductive isolation is complete between this species and other morphologically similar species. Larval ganglion cells ofD. denruoipossess 2n= 12 chromosomes, comprised of four pairs of acrocentric, one pair of metacentric and one pair of micro‐chromosomes. This is the largest number of acrocentric chromosomes in the group and implies that the species has the most primitive chromosomal configuration in themelanicagroup. Based on the results of crossing experiments and close morphological examination,Drosophila pengiOkada & Kurokawa, 1957 from central Japan, once regarded as a synonym ofDrosophila tsiganaBurla & Gloor, 1952, is shown to be distinct fromD. tsigana.Drosophila pengiis thus resurrected as a member of themelanicagroup. We synonymizeDrosophila bisetataToda, 1988, described from central Myanmar, withD. pengi. In addition, a population from Guizhou, southwestern China, once regarded asD. tsigana, is also identified asD. pengi.These populations from central Myanmar and southwestern China share the diagnostic characters ofD. pengi. At the same time, it is reconfirmed that the Hokkaido population is conspecific with EuropeanD. tsigana. Furthermore, another species,Drosophila longiserrataToda, 1988 described from central Myanmar, is synonymized withDrosophila aferTan, Hsu & Sheng, 1949 from China, based on their having identical karyotypes and external morphology.