606 



AN INTRODUCTION TO ENTOMOLOGY 



The best-known species in our fauna is Dalcerides ingenita, found 

 in Arizona. The expanse of the wings is about 25 mm. The wings 

 are deep yellow, inclining to orange, without markings. The larva 

 is unknown. 



Another species, Pincdnia coa, which is not uncommon in Mexico 

 has been reported from Arizona by Holland ('03). 



Family MEGALOPYGID^ 



The Flannel-Moths, 



In this family the wings are heavily and loosely scaled, and mixed 

 with the scales are long, curly hairs; these give the wings the appear- 

 ance of bits of flannel. It is 

 this that suggested the com- 

 mon name of these moths. 

 The body is stout and clothed 

 with long hairs. 



The venation of the wings 

 of our most common species, 

 Lagda crispdta, is represented 

 in Figure 734. There are 

 three anal veins in both fore 

 and hind wings; but in the 

 fore wings the second and third 

 anal veins are partially grown 

 together. The basal part of 

 media is more or less distinctly 

 preserved and divides the dis- 

 cal cell into two nearly equal 

 parts. The subcosta and ra- 

 dius of the hind wings coalesce 

 for nearly the entire length of 

 the discai cell. In these moths 

 the maxillae are vestigial. The 

 larvae are remarkable for the 

 possession of seven pairs of 

 prolegs ; these are borne by ab- 

 dominal segments 2 to 7 and 10; but those of segments 2 and 7 are 

 without hooks. The setiferous tubercles are verrucas bearing large 

 numbers of fine setse ; so that the body is densely hairy ; and inter- 

 spersed among the fine setce are venomous setce. 



There are only ten North American species of this family; these 

 represent four genera. Our most common species are the two follow- 

 ing. 



The crinkled flannel-moth, Lagda crispdta. — This moth is cream- 

 colored, with the fore wings marked with wavy lines of crinkled 

 black and brownish hairs. The male is represented in Figure 



Fig. 734. — Wings of Lagoa crispata. 



