Image:Ascaris lumbricoides.jpeg

An adult Ascaris worm. Diagnostic characteristics: tapered ends; length 15 to 35 cm (the females tend to be the larger ones). This worm is a female, as evidenced by the size and genital girdle (the dark circular groove at bottom area of image).

From http://www.dpd.cdc.gov/dpdx/HTML/ImageLibrary/Ascariasis_il.asp?body=A-F/Ascariasis/body_Ascariasis_il10.htm

From w:en, where it was listed as {{PD-USGov-HHS-CDC}}

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