SYNANTHEDON. Bv B. Zukowsky. 
1229 
S. pyri Harris (= koebelei Hy. Edw.) (176 f). Head and palpi above black, below yellow. Collar above pyri. 
black, below white. Thorax black, with a yellow spot on each side below. Abdomen black with a narrow yellow 
ring on the 2nd and 4th segments in the the $ shows an almost entirely yellow 4th segment, yellow lateral 
streaks on the 1st and 2nd segments. Abdomen beneath longitudinally striped yellow in the middle, anal tuft 
black in the (J, laterally yellow in the $, black in the middle. Legs black, yellowish inside, tibiae and tarsi with 
yellow rings, anterior coxae yellow. Antennae black, in the $ rarely, in the $ always, with a strong white spot 
before the apex. Forewing transparent, margins black, the costal and inner margins narrow, the distal margin 
broad, with yellow streaks in the $, cross-vein strong, under surface yellow along the costa and the inner margin. 
Hindwing transparent with narrow dark margins. 14- 18 mm. From Canada to Florida and Texas. — The 
species is everywhere common; the larva lives beneath the bark of apple and pear trees. The imago appears 
in June and July. 
S. rhododendri Beut. is allied to pyri and scitula (176 f) from which it chiefly differs in the absence of rhododendri. 
the yellow markings on the thorax which is metallic bluish black in rhododendri. Abdomen black with a narrow 
yellow band of the 2nd, 4th and 5tli segments and a yellow line on each side from the base to the first yellow 
band. The 4th and 5th segments beneath almost entirely yellow. 10—15 mm. Cheltenham, Pennsylvania, 
imported in parks by the food-plant, as observed in New York and Brooklyn. Larva in twigs and trunks of 
Rhododendron, but occasionally als in mountain-laurel and Azaleae, living one year and pupating in a light 
web in wood, the imago leaving it from the middle of May until June. 
S. scitula Harris ( = gallivora Win., liospes Walsh, aemula Hy. Edw.) (176 f). Head and antennae black, scitula. 
Palpi yellow with black tips, quite yellow in the 2. Orbita white. Thorax deep bluish black with yellow lateral 
lines, and a yellow spot below on each side. Abdomen deep bluish black with a narrow yellow ring on the 2nd 
and 4th segments, the latter being quite yellow beneath, the 5th and 6th of the $ also yellow beneath. Anal 
tuft black, laterally yellow in the §. Femora bluish black, tibiae yellow with a blackish band on the otherwise 
yellow middle and posterior femora, anterior coxae yellow. Forewing transparent, margins and cross-vein 
bluish black, narrow, distal margin broad with yellow stripes between the veins. Hindwing transparent, veins 
and the narrow margins bluish black. 18—22 mm. Canada, New England and Central States as far as Virginia, 
to the west as far as Ohio and Illinois. May, June. The larva lives beneath the bark of oak, chestnut, but 
especially of the cornel-tree, also found in hickory and willows. 
S. ithacae Beut. (177 d). Similar to S. pyri, but the margins of the wings and the abdomen are quite ithacae. 
black, only the palpi yellow below. Collar narrowly yellow, thorax below on each side with a small yellow spot. 
The ^ has much broader margins of the wings than the <$. 15—18 mm. New York (Ithaca). 
S. corusca Hy. Edw. (177 cl) is likewise a small species. Head bluish black, face and palpi yellow. Thorax corusca. 
bronze coloured with yellow stripes on each side and a posterior yellow transverse streak. Abdomen bronze 
coloured with narrow rings on the 1st, 2nd, 4th and last segments. Anal tuft like the abdomen, laterally some¬ 
times yellowish. Legs outside bronze coloured, inside yellow, anterior coxae yellow. All the wings transparent 
with narrow golden bronze margins. 19—21 mm. Texas. 
S. decipiens Hy. Edw. ( = imperfecta Hy. Edw., nicotianae Hy. Edw.) (177 d). head black, orbita decipiens. 
white. Palpi yellow, black outside at the base. Collar yellow. Thorax black, with a yellow transverse streak 
behind, beneath with a yellow spot on each side. Abdomen mostly thick in the middle, black with yellow rings 
on the 2nd, 4th and last two segments, the ring on the 4th being twice as broad as the others, extending also 
to the under surface. Anal tuft pointed, black, yellow above on each side. Legs yellow and black, hind tibiae 
yellow with a broad black band. Forewing transparent, veins and margins black, distal margin with yellow 
streaks between the veins, the cross-vein orange or red. also the base of the wing red. Hindwing transparent 
with narrow brownish bronze margins and fringe, cross-vein very narrow, yellow or orange. $: separated from 
the £ by broader margins on the forewing, the abdomen with three bands on the 2nd, 4th and last segments, 
also here the middle one being the broadest, anal tuft broad, like a brush. 13—15 mm. This little species was 
found in Colorado and Texas; May, June till July. Larva according to Heinrich in the galls of crippled white 
oaks, the habits similar to those of S. scitula Harris. 
S. rubristigma Kell. (177 d). Head bluish black, orbita silvery white. Basal joint of palpi black, the rubristigma. 
2nd segment black excepting the end, the 3rd quite yellow. Antennae black, collar yellow. Thorax black with 
a yellow transverse streak behind and below and a yellow spot on each side. Abdomen black with narrow yellow 
bands on the 2nd and last segments, and a broad one all around the 4th segment ; the 1st segment on each side 
with yellow spots. Legs as in decipiens. Forewing transparent, cross-vein quadrangular, beautifully red. the 
purple brown margins very narrow. Hindwing like that of decipiens to which the species is closely allied. The 
$ has also broader margins. 16—18 mm. Ohio, Iowa, New York. The larva lives in galls of Andricus cornigerus 
on Quercus palustris. The imago in June till July. 
S. prosopis Hy. Edw. (177 d). Head, antennae, thorax quite black, abdomen the same or with a narrow prosopis. 
white band on the 2nd and last segments. Palpi white, 3rd joint black. Legs black, hind tibiae with tufts and 
spurs white, hind tarsi with white bands, anterior coxae white. Forewing transparent, margins and cross-vein 
