Choranthus richmondi, new species
Figs. 5, 6 ( ♀ ), 21 ( ♀ gen.)
Female: Head, thorax and abdomen blackish-brown above sprinkled with
greenish and fulvous hairs, heaviest on the head and patagia. Antenna dark
brown above, fulvous at the base of the club; below the shaft is ringed
with alternating chocolate-brow and light fulvous; nudum dull brown.
Palpus brownish-black above and pale fulvous below; checks light grayish-
fulvous . Thorax and abdomen beneath densely covered with tan hairs in-
termingled with a few green ones. Legs thickly covered with bright
Upper surface of forewing dark fuscous with a darker patch near the
end of the cell corresponding to that of other members of the group. The
area bounding the cell, from the origin of R1, around the cell and thence
across the wing to near the middle of 2A, is thinly dusted with fulvous
scales and corresponds to the light patch on females of other radians group
skippers. The hindwing is also dark fuscous with long basal fulvous hairs
and a poorly defined discal patch of the same color interrupted by darker
veins. The fringes of both wings arc grayish-brown.
Under surface of forewing fuscous, darker from the base to the end of
the cell and almost to the inner margin. Costa heavily overscaled with
bright fulvous ; the apex, margin and extradiscal areas are thickly over-
scaled with mixed fulvous and green. Hindwing likewise fuscous heavily
dusted with mixed fulvous and green scales, fulvous alone in the anal area.
There are no discal markings, and the veins are not paler than the ground
Length of forewing of Holotype ♀ , 5.5 mm.; of Paratype ♀,
The female genitalia are characteristic of the radians group
as regards the paired median posteriad projections of the lamella
antevaginalis. The broad, shield-like lamella postvaginalis is
similar to that of radians, but it is broader in the present species.
Described from two females from the Exuma Islands, Bahamas.
HOLOTYPE ♀: White Point, Great Guana Cay, Exuma
Islands, BAHAMAS; 17.vii.1965 (N. D. Richmond); ♀ genitalia
slide no. M-1458 (Lee D Miller).
PARATYPE ♀: Exuma Cays, Bitter Guana Cay, BAHAMAS;
13.i.1953 (L. Giavannoli); ♀ genitalia slide no. G2410 (Amer-
ican Museum of Natural History).
The Holotype is in the collection of Carnegie Museum (C. M.
Ent. type series no. 513), and the Paratype is in the collection
of the American Museum of Natural History.
I take great pleasure in naming this skipper for my friend and
colleague, Neil D. Richmond, Curator of Amphibians and Rep-
tiles, Carnegie Museum, who collected the Holotype. His collec-
tions have enriched the entomological holdings of Carnegie
Museum for many years.
This species is the "Choranthus species" referred to by Rindge
(1955) in his report of the Bahaman butterflies. The specimen
he noted is the Paratype.
C. richmondi is closest to radians, and probably radians was
the ancestral species of the Bahaman insect. The Exuma Islands
are those nearest eastern Cuba and lie along the "main line" of
dispersal from Cuba to the remainder of the Bahamas. From
the systematic proximity of radians and richmondi, I expect the
male of the latter to be rather like that of radians, perhaps darker,
and with at least some green overscaling on the hindwing be-
neath. I doubt that the conspicuously paler veins of the hindwing
below which identify radians will be apparent in the present