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Bucephalus (/ b juː. ˈ s ɛ . f ə . l ə s / ; Ancient Greek : Βουκεφᾰ́λᾱς , romanized : Būcephắlās ; c. 355 BC – June 326 BC) or Bucephalas , was the horse of Alexander the Great , and one of the most famous horses of classical antiquity . [ 1 ]
The sources are however unclear on the details of the foundation and naming of the cities. Arrian separates the clauses detailing the location and naming of the cities, so that although the reader knows that one of the two cities was called Nikaia and one named Boukephala, it is unclear which name corresponds to which city.
Photographic and light microscopic images: Zoomed-out view of an Aglais io. Closeup of the scales of the same specimen. High magnification of the coloured scales (probably a different species). Electron microscopic images: A patch of wing: Scales close up: A single scale: Microstructure of a scale: Magnification: Approx. ×50 Approx. ×200 × ...
A gynandromorph can have bilateral symmetry—one side female and one side male. [24] Alternatively, the distribution of male and female tissue can be more haphazard. Bilateral gynandromorphy arises very early in development, typically when the organism has between 8 and 64 cells. [25] Later stages produce a more random pattern. [citation needed]
The male has a median tubular organ (called aedeagus or phallus) which is extended through an eversible sheath (or 'vesica') to inseminate the female. [3] The males have paired sperm ducts in all Lepidopterans; however, the paired testes are separate in basal taxa and fused in advanced forms.
The testicle in the male and the ovary in the female are called the primary sex organs. [1] All other sex-related organs are known as secondary sex organs . The outer parts are known as the genitals or external genitalia , visible at birth in both sexes, [ 1 ] [ pages needed ] while the inner parts are referred to as internal genitalia , which ...
The incubation period ranges from 28 to 32 days. The female does all the incubating and is abandoned by the male about 1 to 2 weeks into incubation. The young remain in the nest for about 24–36 hours. Brood parasitism is quite common with other common goldeneyes, [13] and occurs less frequently with other duck species.
The genus Bucephalus was based on the earliest known bucephalid, B. polymorphus Baer (1827), initially described from a cercaria larva. Siebold (1848) believed that the adult bucephalid he named Gasterostomum fimbriatum represented an adult form of the same bucephalid, but this identity has never been proved.