Complete mitochondrial genome of the hemp borer,Grapholita delineana (Lepidoptera: Tortricidae): Gene variability and phylogeny among Grapholita

The mitochondrial genome (mitogenome) has been extensively used in phylogenetics and species-level evolutionary investigations. The lepidopteran family Tortricidae (leaf-roller moths), including the genus Grapholita, contains numerous species of economic importance, but for the majority of Grapholita species, their mitogenomes remain poorly studied. Here, we sequence and annotate the full mitogenome of Grapholita delineana, an important pest of hemp worldwide and compare it with the mitogenomes of two congeneric species available from GenBank. The G. delineana mitogenome is 15,599 bp long, including 37 typical mitochondrial genes and an A + T-rich region. Gene content, order and orientation are identical to other reported tortricid mitogenomes. Analyses of nucleotide diversity, Ka/Ks, genetic distance and number of variable sites together suggest that nad6 is the fastest-evolving gene among the mitochondrial PCGs of Grapholita. Our analyses indicate that Grapholita, as presently defined, is not monophyletic, confirming previous morphological and multiple-gene studies, using mitogenomic evidence. Our study provides information on comparative mitogenomics of Tortricidae especially Grapholita.     

中国白条小卷蛾属一新种记述（鳞翅目：卷蛾科：新小卷蛾亚科）

记述采自中国海南及台湾的白条小卷蛾属Dudua Walker 1新种,即平截白条小卷蛾D.trunciformis sp.nov.。该种与分布于印度尼西亚的D.brachytoma Diakonoff相似,但其雄性外生殖器抱器瓣末端的腹角圆钝,阳茎长度仅略大于宽度的2倍,具短刺状角状器;而后者抱器瓣末端的腹角角状,阳茎长度约为宽度的3倍,无角状器。