As promised, I've photographed current versions of my drawers with Papilio phorcas and dardanus. (And no "nandina" created hybrids!) Since I'll add explanatory notes with each photo, I'll make a new post for each drawer within this thread.
Here is the first of two drawers of P. phorcas. Column 1 includes p. bardamu from Bioko (males only) and males/females of p. phorcas (West Africa).
The remainder of the drawer contains p. congoanus, although a friend and I have the opinion that p. niloticus, a long-synonymized ssp, should probably be resurrected for phorcas from Kivu through W. Uganda. Here, the latter includes males in Col. 3, the lower 2 green females plus female f. mutans in Col. 4, and the lower 4 females in Col. 5. In the specimens that we've studied, both males and females have consistently differed from these east/west divisions.
Note, also, the interesting male aberrations in Col. 2 - these have partial yellow instead of green, one of which is asymmetric.
P. phorcas, drawer 2. Col. 1-2 includes other ssp from Uganda-Kenya-Tanzania; Col. 4 is a recently discovered population of p. sudanicola from extreme NE Uganda. Col. 3 is from a nearby Uganda location, not quite as far to the NE, and may also be sudanicola. (I'm not seeing a difference, based on these short series.) Col. 5 is p. nyikanus from Malawi.
P. dardanus antinorii - Ethiopia. This ssp has tailed females, both male-like and mimetic. The latter particularly fascinate me; when one is accustomed to tailless mimetic females, these provide quite a shock. My favourite among them is f. alameitu (bottom of Col. 3); it looks like a male with red female centres pasted on top. The female above it is somewhat transitional.
The first two columns here should actually appear before d. antinorii, but for reasons of space, they're housed with nominate males. Col. 1 includes males of the most primitive ssp, meriones, from Madagascar; its females are male-like and never mimetic. Col. 2 includes 3 female meriones, plus d. humbloti males and female from Grand Comoro.
The remaining columns include nominate males from many locations, including the interesting aberrations in Col. 5.
Nominate females #1. The common form, hippocoon, is found throughout the species' continental range; Col. 1 and part of Col. 2, the last of which is aberrant. Other forms here are less often seen, some being very rare; Col. 3 #4 is an undescribed form, and below it is the very rare f. sirius. Those in Col. 5 are more frequent in d. polytrophus and tibullus, but seldom-seen in d. dardanus. They're restricted to an area from E. Rwanda to the east of Lake Victoria; they may be considered as the dubious ssp d. meseres.
More nominate females. Some named forms are barely worth retaining, but as they were used in the 1985 revision by Bernardi et al, I've used them here. Col. 2, #2 is unnamed, to my knowledge; below that is the rare form carpenteri, a genetic "mix" restricted to a small area. The drawer's last specimen is an aberrant male of d. meseres, a ssp of doubtful validity, collected in 1932 by van Someren.
Col. 1 contains d. sulphurea from Bioko; the specimens are in poor condition, especially the females, but are impossible to obtain anymore. These were collected by Canu in the 1980s. Col. 2 #1-2 are d. ochraceana, restricted to two Kenyan mountains. The remainder of Col. 2 plus Col. 3 are d. flavicornis, restricted to Mt Kulal in Kenya; they're the same in pattern as ochraceana, but most interestingly have golden-yellow antennae, unlike all other ssp. The last 2 columns are males of d. polytrophus from the highlands of Central Kenya.
P. d. polytrophus females. A very variable ssp from Kenyan highlands, whose forms are a mixture of more easterly/westerly ssp. The bottom 3 specimens of Col. 1 are, to my knowledge, an undescribed form.