CLEAR-WING MOTHS OF FAMILY AEGERIIDAE 43 



sumably also at home along the Appalachian regions where Rhododendron 

 grows so profusely, no records from south of Pennsylvania are available. 

 Twigs and small branches are preferably attacked, the larvae sub- 

 sisting chiefly on the soft pith, digging long tunnels, which are filled 

 with small, reddish pellets and serve for wintering and for pupation 

 in spring. On larger and older parts of the shrubs the larvae bore under 

 the bark, which peels off, exposing shallow grooves on the hard wood. 

 A heavy infestation observed in the Botanic Garden of Brooklyn, N. Y., 

 in 1918, killed many shrubs in new plantings and furnished ample 

 material for rearing. Moths, exceeded in numbers by ichneumonoid 

 parasites, emerged late in May and during June. Woodpeckers, drilling 

 for the insects, added to the injury, although with ultimately beneficial 

 results. The borer is far less common at present. Complaints of abun- 

 dance in parks and nurseries in and about New York City ceased some 

 time ago. The northernmost record for the species is Kingston, R. I. 



RAMOSIA RILEYANA (Hy. Edwards) 



Albuna rilcyana Hy. Edwards, Papilio, vol. 1, p. 187, 1881.— Beutenmuller, Bull. 



Amer. Mus. Nat. Hist., vol. 4, p. 172, 1892. 

 Aegeria hyperici Hy. Edwards, Papilio, vol. 1, p. 195, 1881.— Beutenmuller, Bull. 



Amer. Mus. Nat. Hist., vol. 4, p. 173, 1892. 

 Aegeria brunneipemiis Hv. Edwards, Papilio, vol. 1, p. 191, 1881. 

 Sesia rileyana Beutenmuxler, Bull. Amer. Mus. Nat. Hist., vol. 8, p. 129, 1896; 



Mem. Amer. AIus. Nat. Hist., vol. 1, pt. 6, p. 280, pi. 31, fig. 9 (male), pi. 32, 



fig. 25 (female), 1901. 

 Sesia brunneipemiis Beutenmijller, Bull. Amer. Mus. Nat. Hist., vol. 8, p. 129, 1896. 

 Synanthedon rileyana McDunnough, Check list of the Lepidoptera of Canada and 



the United States of America, pt. 2, No. 8696, 1939. 



Male. — Antennae robust, only slightly dilated toward tips, black, 

 fuscous beneath, pectinations strong and even. Labial palpus with a 

 rough brush, bright yellow, black at the sides. Head black, face pale 

 yellow. Collar yellow. Thorax black, patagia with long yellow tufts 

 posteriorly and metathorax edged transversely with golden yellow; a 

 yellow mark at base of forewing and a yellow patch beneath at the 

 sides. Abdomen shiny black, with the six posterior segments evenly 

 banded with lemon yellow, the bands encircling the body ; anal tuft 

 yellow and black mixed, with spatulate tufts laterally. Legs yellow, 

 rough ; posterior tibiae with black patches at the sides at posterior spurs ; 

 tarsi with first joint slightly thickened, yellow touched with purple, and 

 remaining joints shaded darker than the first. Forewing transparent, 

 with narrow brownish borders, very slightly edged inwardly with vio- 

 laceous scales between the veins; costa and veins violaceous-black; dor- 

 sum reddish brown to wing base ; discal inark moderately large, oblong, 

 bright red, narrowly edged with black inwardly ; beneath, a heavy, yellow 

 shading on costa and dorsum. Hindwings transparent, margins very 



