On the systematic position of Cacosyndya Kirby(Hymenoptera:Tenthredinidae)with redescription of Cacosyndya dimorpha Freymuth  

愈胸叶蜂属系统学地位评述及二型愈胸叶蜂重新描述(膜翅目:叶蜂科)

作　　者：Meicai WEI Gengyun NIU 魏美才;牛耕耘(江西师范大学生命科学学院,江西南昌330022)

机构地区：[1]College of Life Sciences,Jiangxi Normal University,Nanchang,Jiangxi 330022,China

出　　处：《Entomotaxonomia》2024年第3期251-256,共6页昆虫分类学报（英文）

基　　金：supported by the National Natural Science Foundation of China(32370500;31172142)。

摘　　要：A peculiar sawfly genus from middle Asia,Cacosyndya Kirby,1883 and the type species Cacosyndya dimorpha(Freymuth,1870)are redescribed and illustrated.The systematic position of this genus in Tenthredinidae is discussed.The females in the genus are apterous,the only known apterous Symphytan,but the male is normally winged.Cacosyndya is not a member of Fenusinae or Heterarthrinae,but a member of Phymatocerini of Blennocampinae,Tenthredinidae as shown by the structure of the antenna,wing venation and body structure.The relationship between Cacosyndya and members of Phymatocerini is briefly discussed.重新描述了1种中亚分布的特殊叶蜂,即愈胸叶蜂属Cacosyndya Kirby的模式种二型愈胸叶蜂Cacosyndya dimorpha(Freymuth,1870),提供了重要形态特征图,并讨论了该属在叶蜂科内的系统学位置。该属雌虫完全无翅,是膜翅目基部广腰蜂类中唯一的雌虫无翅属种,其雄虫翅正常。基于触角、翅脉和虫体部分特征,指出愈胸叶蜂属不是潜叶蜂亚科或凹颜叶蜂亚科的成员,而是蔺叶蜂亚科的等节叶蜂族成员。文中还简要讨论了本属与等节叶蜂族内的近缘属的鉴别特征。

关 键 词：apterous sawflies Blennocampinae Phymatocerini TAXONOMY 

分 类 号：Q969[生物学—昆虫学]