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  2. Neoscona crucifera - Wikipedia

    en.wikipedia.org/wiki/Neoscona_crucifera

    Females are about 9.5–19 millimeters (0.37–0.75 in) long, while males are somewhat smaller. The upper surface of the abdomen is brown and hairy. The legs display alternating light and dark brown bands. The undersurface of the abdomen is black, with two white spots.

  3. Linea nigra - Wikipedia

    en.wikipedia.org/wiki/Linea_nigra

    Linea nigra (Latin for "black line"), colloquially known as the pregnancy line, manifests as a linear area of heightened pigmentation frequently observed on the abdominal region during pregnancy. [1] Typically spanning approximately one centimeter (0.4 in) in width, this brownish streak extends vertically along the midline of the abdomen ...

  4. Northern flicker - Wikipedia

    en.wikipedia.org/wiki/Northern_flicker

    A necklace-like black patch occupies the upper breast, while the lower breast and belly are beige with black spots. Males can be identified by a black (in the eastern part of the species' range) or red (in the western part) mustachial stripe at the base of the beak, while females lack this stripe.

  5. Columbia spotted frog - Wikipedia

    en.wikipedia.org/wiki/Columbia_Spotted_Frog

    The Columbia spotted frog is a medium-sized frog reaching lengths of up to 3.5 in (90 mm). Its color ranges from a dark, olive green to light brown with irregularly shaped black spots on its back and legs (rendering its name).

  6. Rose-breasted grosbeak - Wikipedia

    en.wikipedia.org/wiki/Rose-breasted_grosbeak

    The adult female has dark grey-brown upperparts – darker on wings and tail – a white supercilium, a buff stripe along the top of the head, and black-streaked white underparts, which except in the center of the belly have a buff tinge. The wing linings are yellowish, and on the upperwing are two white patches like in the summer male.

  7. Abdominal pigmentation in Drosophila melanogaster - Wikipedia

    en.wikipedia.org/wiki/Abdominal_Pigmentation_in...

    Studies have indicated that the black melanin is Dopamine-melanin and not Dopa-melanin. The combined over-expression of yellow and tan at 29 °C is necessary and sufficient to reproduce the black phenotype observed at 18°C. Thus, the stronger expression of yellow at 18°C also contributes to thermal plasticity of female abdominal pigmentation.

  8. Common flat lizard - Wikipedia

    en.wikipedia.org/wiki/Common_Flat_Lizard

    The back can also have whitish spots, similar to many other Platysaurus species. The tail is a dark orange, while the throat is pale blue. The neck has two black spots on either side. This is a reduced collar. The chest and belly are blue, similar to others of the genus. This race can be found on Blouberg, a mountain, in Limpopo Province.

  9. Spotted turtle - Wikipedia

    en.wikipedia.org/wiki/Spotted_turtle

    The spotted turtle is the only species in the genus Clemmys, which was first named in 1828 by Ferdinand August Maria Franz von Ritgen. [3] [6] Johann Gottlob Schneider originally described the species as Testudo guttatai in 1792; however, he is now the authority for the current binomial name, Clemmys guttata. [6]