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用糖液预测地老虎成虫时,被诱到的蛾子,常因糖液的影响使翅上的鳞毛大量脱落,主要特征模糊不清,很难鉴别。现将我们在糖液下如何鉴别的情况,简介于后,仅供参考。 大地老虎:大地老虎是三种地老虎中个体最大的一种,体长20—28毫米,体和翅暗褐色。在糖液的影响下,如翅上的特征,不很明显时,就观察前胸背板端部(近颈和前胸处),有二领片,各个领片具有一扇形毛,为暗褐色。从头部正面视扇形毛的中部有一横暗黑色弧形带,两扇形毛并合形成似Y形。这是糖液中进行鉴别的主要特征之一。即使糖液很稠,此扇形毛也难以脱落。如两个扇形毛分离,可依单一的扇形毛特征进行鉴别,或者用鑷子夹着成虫腹部,头部向前,浸入糖液中迅速移动,扇形毛粘着糖液后,即成似Y形。
Predation of adult tiger sugar solution, trapped moths, often due to the impact of sugar on the wing scales shed a lot of hair, the main features of vague, it is difficult to identify. Now we in the sugar solution how to identify the situation, brief introduction, for reference purposes only. Terrestrial tiger: Terrestrial tiger is the largest of the three species of tigers, body length 20-28 mm, body and wings dark brown. Under the influence of sugar liquid, such as the characteristics of the wings, is not very clear, the end of the front and back of the chest (near the neck and chest), there are two lugs, each lug has a fan-shaped hair, dark brown. Viewed from the front of the head fan-shaped hair in the middle of a dark black curved band, the two fan-shaped hair and formed like Y-shaped. This is one of the main characteristics of sugar in the identification. Even if the sugar is very thick, the fan-shaped hair is also hard to fall off. If the two fan-shaped hair separation, can be identified by a single fan-shaped hair, or tweezers sandwiched adult abdomen, head forward, immersed in sugar quickly move, fan-shaped wool sticky sugar solution, which is similar to the Y-shaped.