margherita wrote:
Sorry, but I'm not persuaded. Why some signs are not mentioned?
It is possible that a few significations were simply missing from the text, or weren't in the manuscript tradition that Pingree edited for this chapter of Hephaistio. Enough of them are preserved that there is a pretty clear pattern though. Here are the ones listed by Hephaistio:
Diurnal: Leo, Virgo, Scorpio, Sagittarius, Capricorn.
Nocturnal: Cancer, Aries, Aquarius, Pisces.
margherita wrote:
And why nobody mentions this different idea of hairesis?
It is not accurate to say that "nobody" mentions this idea. Knappich recognized and mentioned it, which is what started this thread, and Hand called attention to it as a possibility in the footnote I mentioned earlier.
margherita wrote:
And which more ancient tradition considering that Hephaistio book is a comment to Tetrabiblos?
Hephaistio is not a commentary on the Tetrabiblos. It draws heavily on the Tetrabiblos in some chapters, but it also draws heavily on other authors/traditions like Dorotheus. In the same chapter that deals with the signs at the beginning of Hephaistio he alternates between first listing the terms/bounds according to Dorotheus, and then he gives them according to Ptolemy. It is possible then that this alternative tradition for assigning sect to the signs of the zodiac came from Dorotheus or some other early author. Hephaistio also drew on and cites other early authors later in his work like Nechepso, Thrasyllus, Critodemus, and others. His text is a compilation from the works of many early authors then, although primarily from Ptolemy and Dorotheus.
margherita wrote:
I checked Teucer (in Rethorius, in Holden translation), which is really a different tradition of Hellenistic astrology and he says that Taurus is feminine and nocturnal and Gemini is diurnal and masculine. Teucer for sure did not depend on Ptolemy.
It is not clear to me that those passages that are supposed to be from Teucer in Rhetorius haven't been updated by Rhetorius, because they include some concepts that didn't tend to be emphasized as much until later in the tradition, like the concept of detriment. It is odd that sect is not mentioned at all in the same parallel passages by Valens when he talks about the signs in Anthology 1, 2, as those passages are also supposed to be derived from Teucer. So which one represents the earlier version, the one preserved by Valens, or the one preserved by Rhetorius? Who knows.