158 
HYBRIDS OF SPHINGIDAE. By B. Gehlen. 
Tcunzi, 
standfussi. 
populi- 
for mis. 
tremulae¬ 
formis. 
exstin- 
guenda. 
miranda. 
complicata. 
discrcpans. 
piano ger¬ 
trudis. 
planatlan- 
ticus. 
fischeri. 
schneideri. 
euphothy- 
mali. 
flavescens. 
rosacea. 
pallida. 
imperfecta. 
unicolor. 
In the 2 9? brought through, the eyespots of one resemble the eyespots of excaecata with wide black edge 
in lower part. In the other $ there is a large deep black spot without any blue colouration at all in the 
place of the eyespot. 
S. hybr. kunzi Dannenberg (hybr. gertrudis Dannenb. x A. populi populi L. $). — This hybrid is 
midway between hybridus and fringsi, but is rather closer to fvingsi. M ing expanse 62—71 mm. Forewings 
are narrower than hybridus, outer margin not so bulging. Outer margins of all wings less undulate than liybridus 
and fringsi. Colouration a rich dark grey, partially with reddish tinge. Thoracic spot not wider, but paler 
than in fringsi. Markings pale and diffuse, central area darker, the inner edge of same never shows the sharp 
partially right angle as in hybridus. It extends in an obtuse angle or in an undulate line similar to that of fringsi. 
The rusty spot on hindwings is dull yellowish or reddish yellow; eyespot markings are much less pronounced 
and incline to be completely extinct. 
S. hybr. standfussi Dannenberg nec Bartel (A. populi austauti Stgr. A X S. hybr. gertrudis Dbg. $). _ 
Is closer to hybr. metis Oberth. than to hybr. varians Stdfs., but the wings are considerably narrower than 
in the latter. Outer margin of forewings moderately undulate. Colouration is pale grey to light yellow-grey 
with dark central band. I horacic spot narrow as in metis, but generally darker. Markings of subterminal lines 
on forewings more indistinct, whilst the inner edge of the central area is more sharply marked (as in metis 
in contrast to oberthuri) and this line has 2 sharply marked dentations pointed outwards (which are not present 
in metis, oberthuri and varians). The red of hindwings is paler and less extensive than in metis and oberthuri. 
Eyespot of hindwings distinct as in metis, but the black border of same is narrower. 
The following further hybrids of this group have been bred, of which hitherto no descriptions have 
been published: 
A. hybr. populiformis Stdfs. (A. populi L. S X A. hybr. langi Stdfs. 9). 
A. hybr. tremulaeformis Stdfs. (A. hybr. langi Stdfs. $ X A. populi L. 9). 
A. hybr. exstirsguenda Stdfs. (A. hybr. tremulaeformis Stdfs. J, X A. hybr. tremulaeformis Stdfs. 9)- 
S. hybr. miranda Stdfs. (S. ocellata L. A X S. hybr. neopalaearctica Stdfs. 9). 
S. hybr. complicata Stdfs. (S. ocellata L. $ x A. hybr. tremulaeformis Stdfs 9). 
S. hybr. discrepans Stdfs. (S. ocellata L. X A. austautoides Stdfs. 9). 
S. hybr. planogertrudis Kunz (S. planus Wkr. A X S. hybr. gertrudis Dannenb. 9). 
S. hybr. planatlanticus Kunz ( S. planus Wkr. <$ X S. ocell. atlanticus Aust. 9). 
S. hybr. fischeri Kunz (S. ocellata L. $ x S. hybr. charlotta Dannenb. 9). 
S. hybr. schneideri Kunz (S. hybr. charlotta Dannenb. A X S. hybr. gertrudis Dannenb. 9). 
S. hybr. (sine nom.) (S. hybr. fischeri Kunz x S. ocell. atlanticus Aust. 9). (Bred by Dr. E. Kunz.) 
S. hybr. (sine nom.) {S. hybr. fischeri Kunz $ x S. hybr. fischeri Kunz 9). (Bred by Dr, E. Kunz). 
II. Hybrids between the Genera Celerio and Pergesa. 
A. Crosses between races of the C. euphorbiae group. 
C. hybr. euphothymali Niep. (13 c) (G. euph. euphorbiae L. $ x G. euph. tithymalia Bsd. <J) is exactly 
midway between the races. The olive-green costal zone as in tithymali, but not so wide, so that the central 
area appears to be wider. Outer edge of the oblique band as in euphorbiae. Olive-grey marginal area wider 
than in tithymali. 
B. Primary Hybrids. 
G. hybr. galiphorbiae Dso. (Vol. 2, p. 266, pi. 43 a, c). ab. flavescens Gunther has yellow instead of red 
median band to hindwings (of the same colour as central area of forewings); cloudy dusky brown before the 
anal spot. 
T. hybr. pernoldi Jacobs (A ol. 2, p. 268, pi. 43 c). ab. rosacea Gunther. The entire central area of forewings 
heavily suffused with pale rose. Markings very distinct. — ab. pallida Gunther has central area of forewings and 
hindwings and underside yellowish rose and reminds one consequently somewhat of hybr. gschwandneri. — 
ab. imperfecta Gunther has no submarginal band on hindwings or only traces of same. — ab. uilicolor Gunther 
has such an expanded costal zone of forewings that the atavistic line and the inner edge of the oblique band 
are no longer visible and the outer edge of the oblique band appears diffuse. 
