Integrative taxonomy based on morphometric and molecular data supports recognition of the three cryptic species within the Encyrtus sasakii complex (Hymenoptera, Encyrtidae)
Integrative taxonomy based on morphometric and molecular data supports recognition of the three cryptic species within the Encyrtus sasakii complex (Hymenoptera, Encyrtidae)
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基于形态和分子数据的综合分类学支持识别 Encyrtus sasakii 复合体中的三个神秘物种（膜翅目、Ecyrtidae）
DOI：
10.3897/jhr.90.75807
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发表时间：
2022-04
影响因子：
1.3
通讯作者：
Yan-Zhou Zhang
中科院分区：
文献类型：
--
作者：
Andrey Rudoy;Chao-Dong Zhu;Rafael R. Ferrari;Yan-Zhou Zhang
Morphometrics has established itself as one of the most powerful tools for species delimitation, particularly for morphologically-conserved groups of insects. An interesting example is the parasitoid Encyrtus sasakii Ishii (Hymenoptera: Chalcidoidea: Encyrtidae), which was recently subdivided into three cryptic species that are seemingly well-delimited with the available DNA data but nearly indistinguishable morphologically. Here, we performed linear morphometric analyses of the antenna as well as shape analyses of the ovipositor and hypopygium (the last two are key structures associated with host location and selection) to shed further light on the taxonomic status of the E. sasakii complex. Principal component analyses were carried out to visualize the amount and direction of shape variation in the ovipositor and hypopygium. Complementarily, we constructed phylogenetic trees using a Bayesian approach based on two markers (28S and COI). We found statistically-significant differences in the relative size of the funicle and of the two proximal claval antennomeres among the three species. Our analyses also indicated that the outer plates of the ovipositor show remarkable allometric changes and that both the stylus and shield of the ovipositor are relatively well conserved among species. We nonetheless found consistent interspecific differences in the shape of the 2nd outer plate of the ovipositor and hypopygium. Also, both our COI and combined trees recovered three strongly-supported major clades, each corresponding to one of the three cryptic species. We discuss that changes in the shape of the ovipositor may have played an important role in host shift and speciation within the E. sasakii complex. Even though the recent descriptions of both E. eulecaniumiae Wang & Zhang, 2016 and E. rhodococcusiae Wang & Zhang, 2016 appear not to fully satisfy the International Code of Zoological Nomenclature, a simple resolution for the sake of taxonomic stability is proposed herein.
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影响因子：
1.3
作者：
Monckton SK
通讯作者：
Monckton SK
影响因子：
1.3
作者：
Murray P. Fea;C. J. Mark;G. Holwell
通讯作者：
Murray P. Fea;C. J. Mark;G. Holwell
影响因子：
3.7
作者：
Ghara M;Kundanati L;Borges RM
通讯作者：
Borges RM
中国球虫属（膜翅目：蚜科）寄生蜂群
影响因子：
2.8
作者：
Zhou Qing-Song;Polaszek Andrew;Qin Yao-Guang;Yu Fang;Wang Xu-Bo;Wu San-An;Zhu Chao-Dong;Zhang Yan-Zhou;Pedata Paolo Alfonso
通讯作者：
Pedata Paolo Alfonso
影响因子：
8.8
作者：
Desneux, Nicolas;Blahnik, Roger;Heimpel, George E.
通讯作者：
Heimpel, George E.