1228 
SYNANTHEDON. By B. Zukowsky. 
ment above narrowly pale yellow, a pale yellow spot on each side of the 4th segment, pale yellow scales on the 
2nd and 3rd segments above in the $. 19—20 mm. Long Island, Brooklyn, but it is surely farther distributed. 
The larva lives in trunks and twigs, generally in damaged places, of Viburnum dentatum, but also of cultivated 
species of the genus Viburnum, for instance in gardens and parks of Brooklyn. The cocoon is made of particles 
of wood underneath the bark, the imago leaving it in May or June. According to Engelhardt, the larva lives 
for a year and has much to suffer from parasites. 
ctlbicornis. S. albicornis Hy. Edw. (= proxima Hy. Edw.) (176 e $, 178 a <$). Head black, palpi whitish yellow. 
Antennae bluish black, little white before the tips in the extensively white in the $. Thorax black with a 
pale yellow stripe on each side, which, however, may also be absent, a pale yellow spot beneath on each side. 
Abdomen blackish bronze. Anal tuft white below. Legs bluish black, tibiae with white hair-tufts, anterior 
coxae purely white. Forewing transparent with violettish brown margins, the costal and inner margins narrow 
and black, distal margin broad, golden yellow between the veins. Cross-vein distinct, bluish black. Beneath the 
costal margin and the cross-vein are yellowish. Hindwing transparent with narrow blackish distal margins. 
15—22 mm. New York, New Jersey, Pennsylvania, New Hampshire, Illinois, Colorado, California, Nevada, 
Oregon. — A very common species appearing in May and June, its larva living in trunks and twigs of young 
willows in swampy places. 
acerni. S. acerni Clem. (~ acericolum Germ.) (176 e). Head, collar and palpi orange, orbita white. Antennae 
brownish black. Thorax yellow above and below. Abdomen bluish black, more or less covered with yellow 
scales. Under surface quite yellow. Anal tuft orange. Legs pale yellow, tibiae with a black band at the end. 
Forewing narrow with narrow purple brown margins, more or less scaled yellow. Distal part of fore wing pale 
yellowy veins black, a broad black cross-vein. Hindwing transparent with very narrow margins and purple 
brown fringe, sometimes yellow' at the apex. 22—25 mm. Canada, New England, Central States, to the west 
as far as Nebraska. — One of the commonest species, appearing in May and June. The larva lives in various 
species of maple, e. g. Acer dysocarpum, Acer rubrum, sacharinum, as well as in Pyrus americana, in trunks 
and twigs, and it often does so much harm that younger trees may decay. According to Hitlst, the eggs are 
deposited at night! 
accerubi. S. accerubi Engelh. Antennae black, whitish yellow before the tips, especially in the $, palpi orange, 
black apically, head black, orbita silvery white. Collar orange, mixed with black, thorax violettish black above, 
pale yellow beneath, patagia broadly edged with yellow. The coxae of the forelegs are silvery white. All the 
wings transparent, veins, costa, a rather broad apical margin and cliscal mark on the forewing black; beneath 
the same, with a yellowish tinge. Abdomen steel-blue or violettish blue, in the the segments 2, 4, 5, 6 are 
narrowly margined with whitish, almost pale yellow, in the $ only the segments 4, 5 and 6, the same segments 
beneath quite pale yellow, anal tuft bright red. mixed with black in the $. Legs bluish black, mixed with yellow', 
18—20 mm. North Atlantic and Central Western States, especially found by Engelhardt near New York and 
Long Island. — The larva lives underneath the bark of different species of maple, sometimes in deserted passages 
of Zeuzera pyrina , but also like Syn. acerni Clem. It pupates in May in an oblong cocoon from which the imago 
generally emerges in June or July. 
aureopurpu- S. aureopurpurea Hy. Edw. (176 f). Head purple brown, palpi yellow, black in front. Collar narrowly 
to*. ef iged with yellow. Antennae black with a broad white spot before the tip. Thorax purple brow'n with a narrow 
yellow streak on the shoulders. Abdomen black with yellow rings on the 2nd, 3rd, 5th and last segments. Anal 
tuft black. Legs brownish black, tarsi yellowish, anterior coxae yellow. Forewing purple brown with a golden 
yellow reflection. Distal part with fine yellow' streaks between the veins. Hindwing transparent with purple 
brown veins and margins. 14 mm. Texas. 
tucumana. S. tucumana Le Cerf. Forewing transparent, discocellular, veins and margins greyish black, distal 
margin between the veins grey. Hindwing transparent, veins and margins black, fringe black. Head and an¬ 
tennae black. Palpi black and white. Thorax greyish black, with a yellow longitudinal spot on each side, a 
few white scales at the base of the wings and two yellow spots on the metathorax. Abdomen greyish black 
with yellowish margins on the segments 2 above, 4, 5 and 6 above and beneath. Anal tuft black, white laterally. 
Legs smoky black, tibiae with whitish yellow rings, tibial spurs white. 14 mm. 1 Tucuman, Argentina; 
December. 
macropyya. S. macropyga Le Cerf is a very small species with an expanse of but ll - 2 mm, especially distinguished 
by an enormously long anal tuft which is almost as long as the abdomen and covers the valves. Forewing trans¬ 
parent. the margins and veins purple black, a few yellow scales at the apex at veins 5 and 6, also at the ex¬ 
terior edge of the discocellular vein, the distal area is traversed by 5 veins. Hindwing transparent, veins and 
margins black, fringes of all the wings black. Head black, snow-white in front. Palpi quite yellow. Antennae 
black, finely ciliated. Thorax convex, blackish blue with light yellow lateral spots. Legs black and whitish, 
tibial spurs white. Abdomen blackish blue, with a blurred yellow lateral line, the 4th segment above margined 
with yellowish, the segments 2. 5 and 6 with yellow traces. Segments 4. 5, 6 and 7 beneath all white. The 
abdomen is narrow and compressed towards the end. and becomes then very broad again owing to the enorm¬ 
ously developed anal tuft. Brazil. Fazenda do Sobrado on the Rio das Pedras, Serra da Mantagueira, 1000 m; March. 
