Coquillettidia linealis (Skuse, 1889) is a common mosquito species, widespread in south‐east Australia. It is associated with permanent freshwater habitats where it can be very abundant and the cause of significant nuisance biting. Additionally, Cq. linealis is thought to be a significant vector of some arboviruses, such as Ross River virus, because numerous isolates have been recovered from the species. Although recognition of the species in 1889 was based on adult females, the larval stage has never been described. This lack of description has been primarily because the larvae are cryptic; all larval stages have modified respiratory siphons that pierce and remain attached to subsurface tissues of aquatic plants, from which they gain oxygen. Similarly, pupae have modified respiratory trumpets to attach to plants below the water surface. In this study, adult host‐seeking females were field collected and blood fed for oviposition, and the resulting larvae were reared to adults to establish a sustainable colony, from which fourth‐instar larvae were selected to provide the first formal description of this life stage of Cq. linealis. This description allows differentiation of Cq. linealis from larvae of its local congener Coquillettidia xanthogaster (Edwards) as well as local Mansonia species but not the larvae of the other Coquillettidia species in Australia that are still undescribed.

中文翻译：

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羽扇豆四龄幼虫的描述（双翅目：Cu科）

Coquillettidia linealis（Skuse，1889）是常见的蚊种，广泛分布于澳大利亚东南部。它与永久性的淡水生境有关，那里的生境可能非常丰富，并且会引起严重的滋扰。此外，Cq。线性人们认为该病毒是某些虫媒病毒（如罗斯河病毒）的重要载体，因为已从该物种中回收了许多分离株。尽管在1889年对该物种的识别是基于成年雌性，但从未描述其幼体阶段。缺乏描述主要是因为幼虫是隐性的。所有幼体阶段都有经过改造的呼吸虹吸管，这些虹吸管刺穿并保持附着在水生植物的地下组织上，并从中吸收氧气。同样，p具有改良的呼吸喇叭，可以附着在水面以下的植物上。在这项研究中，现场收集了成年寻求宿主的雌性，并为输卵供血，然后将成年幼体饲养到成年后建立了可持续的种群，Cq。线性。该描述允许区分Cq。linealis从其本地同类的幼虫Coquillettidia xanthogaster（爱德华兹）以及当地曼物种，但不是其他的幼虫Coquillettidia澳大利亚物种仍然未描述。