Where does “желтобрюх” come from?

желтобрюх (Russian) comes from Russian жёлтый, from Old East Slavic жьлтъ, from Proto-Slavic žьltъ, from Proto-Balto-Slavic gilˀtas, from Proto-Indo-European ǵʰelh₃- — to flourish; green, yellow.

желтобрюх (Russian): Dolichophis caspius, the Caspian whipsnake

Definitions

  1. Dolichophis caspius, the Caspian whipsnake

Ancestry of “желтобрюх”, step by step

желтобрюх traces back through two separate lines of ancestry.

via Russian жёлтый

StepLanguageWordMeaning
1Russianжёлтыйyellow
2Old East Slavicжьлтъ—
3Proto-Slavicžьltъyellow
4Proto-Balto-Slavicgilˀtasyellow
5Proto-Indo-Europeanǵʰelh₃-to flourish; green, yellow

via Russian брюхо

StepLanguageWordMeaning
1Russianбрюхоbelly; paunch
2Old East Slavicбрюхо—
3Proto-Slavicbřȗxobelly
Every word from Proto-Indo-European ǵʰelh₃- →Every word from Proto-Balto-Slavic gilˀtas →Every word from Proto-Slavic žьltъ →