User talk:Alvesgaspar

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Welcome to winter!



Blatta orientalis[edit]

Hello Alvesgaspar,

You reverted my removal of the category "Blatta orientalis" for the image "File:Cockroach August 2012-2.jpg". I noticed someone else tried to remove it previously as well. The appearance of the pictured specimen contradicts scientific descriptions of the species. Famales of B. orientalis have almost no tegmina (the outer wings; they extend just past the thorax), and males of the species have tegmina that cover only about two thirds of the abdomen.

The pictured specimen has tegmina that extend past the tip of the rear abdomenal segment. They are clearly damaged, and may have reached past the cerci, but even as pictured would be an extreme outlier for the species.

This 1838 drawing and this 1913 drawing both illustrate the limited length of the male tegmina. They also show that the abdomen of the male is around the same width as its pronotum (the shield behind the head), whereas the pictured specimen has an abdomen almost 50% wider than its pronotum.

This source describes the male body length as 20-25 mm, and the length of tegmina as 12-16 mm.

Other details (cerci, pronotum, styles) have less pronounced deviations, but I'm hopeful that the tegmina alone convince you of its misidentification. The image in question is used in the Wikipedia pages of several languages as an illustration in articles about Blatta orientalis.

Regards. ––Agyle

Quality Image Promotion[edit]

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