THE INSECT FAUNA OF THE GENUS CRATAEGUS 1073 



Saturniidae 



io Fabr., Automeris 



The eggs of Automeris io are not uncommon on the under side of haw- 

 thorn leaves in late June and in July. They are very characteristic and 

 conspicuous. A cluster of eggs may consist of a dozen or more, each 

 large and creamy white with a dark blue dot on the distal end. The 

 larvae feed in colonies on the foliage during July, August, and September. 

 They are at first dark, then green, and are always covered with a mass of 

 dark, stinging spines. 



Arctiidae 



caryae Harris, Halisidota (Hickory tussock moth) 



The black-and-white-tufted caterpillars of the species Halisidota caryae 

 are fairly common on native hawthorns during August. 



tesselaris A. and S., Halisidota 



The caterpillars of Halisidota tesselaris are similar to those of H. caryae 

 and are found occasionally on the foliage with them, but are not so 

 common. 



textor Harris, Hyphantria (Fall webworm) 



A single colony of larvae of Hyphantria textor was feeding on Crataegus 

 pruinosa on July 31, 1918. An egg cluster which was probably of this 

 species hatched on June 19, and the young larvae fed on C. punctata leaves 

 for a few days and then died. 



Noctuidae 



americana Harris, Acronycta 



The larvae of Acronycta americana are green, with an abundant covering 

 of yellowish white hairs and a few long pencils of black hairs. They were 

 found feeding on the leaves of native hawthorns in late June and July. 

 The species is not common. 



dactylina Grote, Acronycta 



The larvae of Acronycta dactylina are entirely covered with yellowish 

 white hairs and have three long pencils of black hairs. They were feeding 

 on the foliage of Crataegus punctata from August 15 to September. The 

 species is not common. 



luteicoma G. and R., Acronycta 



The larvae of Acronycta luteicoma are black, with tufts of white hairs 

 on segments 3 to 6 and tufts of black hairs on the other segments. , They 

 were found feeding on Crataegus punctata leaves from June 23 to July 22. 

 The species is not common. 



