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Diagnoses and re-description of Coccinellid beetles, Stethorus rani Kapur and Stethorus aptus Kapur (Coleoptera: Coccinellidae) preying on tea red spider mite Oligonychus coffeae Nietner (Acari: Tetranychidae)
International Journal of Tropical Insect Science ( IF 1.2 ) Pub Date : 2020-05-04 , DOI: 10.1007/s42690-020-00136-5
Azariah Babu , Vattakandy Jasin Rahman , Shaloo Ayri , Amsalingam Roobakkumar , J. Poorani , V. V. Ramamurthy

Stethorus aptus Kapur and Stethorus rani Kapur are two important predatory ladybird beetles preying on red spider mite, Oligonychus coffeae Nietner infesting tea in South India. This study re-describes these two predatory beetles since it was found that the original descriptions were scanty. In this study, an attempt has been made on the diagnoses with a detailed description which is supplemented with current terminology, illustrations, coloured images, morphometrics and SEM images of both species. The morphometrics done in the study deals with the length and width of the egg, larvae, pupa and adult of both male and female. Body colour, setae, clypeus, eyes, antennae, scutellum, elytron, abdomen, legs and genitalia were re-described. The present study of the surface morphology with SEM puts forward the differences observed in the size of the punctures on pronotum of two species and the proportion of elytral length versus width as additional diagnostic characters of significance.

中文翻译:

捕食茶红叶螨 Oligonychus coffeae Nietner(Acari:Tetranychidae)的瓢虫甲虫、Stethorus rani Kapur 和 Stethorus aptus Kapur(鞘翅目:瓢虫科)的诊断和重新描述

Stethorus aptus Kapur 和 Stethorus rani Kapur 是两种重要的掠食性瓢虫甲虫,它们捕食红蜘蛛螨、咖啡寡爪螨 Nietner 在印度南部侵染茶。这项研究重新描述了这两种掠食性甲虫,因为发现原始描述很少。在这项研究中,尝试对诊断进行详细描述,并辅以两个物种的当前术语、插图、彩色图像、形态测量学和 SEM 图像。研究中进行的形态测量涉及雄性和雌性的卵、幼虫、蛹和成虫的长度和宽度。重新描述了体色、刚毛、眼睑、眼睛、触角、盾片、鞘翅、腹部、腿和生殖器。
更新日期:2020-05-04
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