146 
Psyche 
[December 
Ahlbergia Bryk, 1946, Ark. for Zook, 38A(3) :50. Generi- 
type : Thecla frivaldszkyi Lederer, by original designation. 
New Synonymy. 
Generic Description Based on the Adults 
External facies. The ground color above is gray to 
orange brown in most of the Nearctic species. In the 
Palearctic species it is blue to iron gray with the excep- 
tion of chalybea pinto Leech and circe Leech. In chalybea 
pluto the ground color is a deep black and in circe the 
distal area is dark while the basal area is dusted with 
bright metallic blue. The hindwings lack the “tails” char- 
acteristic of many genera and species of Theclinae, and 
usually have somewhat scalloped outer margins. The inner 
margins are often concave above the anal angles, and 
these are prolonged and bent downward at right angles. 
The ground color of the underside is a shade of brown, 
sometimes suffused with gray on the outer half of the 
hindwing. The eyes are hairy and large. 
Male genitalia (figs. 1 and 2). Labides (paired, rounded, 
hairy, dorsal projections) projecting shortly, but deep 
dorsoventrally. Falces (heavily chitinized, paired, sharp, 
subdorsal structures which, with the paired labides, char- 
acterize the Lycaenidae) of fairly even width subtermi- 
nally; tapering to a point terminally. Saccus short, thick, 
and without any pronounced angling. Aedeagus very long 
and slender. 
Female genitalia (figs. 3 and 4). Ostium flaring into a 
Explanation of Plate 15 
Fig. 1. Male genitalia of Incisalia niphon (Hiibner) from Waltham, 
Mass. (30x). A. Ventral view with aedeagus removed and hairs of 
harpes not shown. B. Inset of a harpe showing hairs. C. Lateral view of 
aedeagus. Fig. 2. Male genitalia of Incisalia frivaldszkyi (Lederer) from 
South Korea (30x). A. Ventral view with aedeagus removed and hairs 
of harpes not shown. B. Lateral view of aedeagus. Fig. 3. Female 
genitalia of I. niphon (Hiibner) from Tyngsboro, Mass., ventral view 
(9.9x). Fig. 4. Female genitalia of I. frivaldszkyi (Lederer) from Okean- 
skaja, Ussuri, ventral view (9.9x). All specimens in the collection of 
the Musuem of Comparative Zoology, Cambridge. 
