390 W. D. FUNKHOUSER 



37. Telamona decorata — Red oak, basswood 



38. Archasia Belfragei — Locust, oak 



39. Smilia camelus — Locust, oak 



40. Cyrtolobus ovatus — Grass 



41. Cyrtolobus fuliginosics — White oak 



42. Cyrtolobus muticus — Host unknown 



43. Cyrtolobus tuberosum — White oak, red oak, hickory 



44. Cyrtolobus discoidalis — Host unknown 



45. Cyrtolobus cindiis — White oak 



46. Cyrtolobus vau — White oak, chestnut oak, red oak, scarlet oak 



47. Cyrtolobus intermedins — Host unknown 



48. Cyrtolobus cinereus — Oak 



49. Cyrtolobus fuscipennis — Oak 



50. Atymna castaneae — Chestnut 



5L Atymna querci — White oak, chestnut oak 



52. Atymna inornala — White oak 



53. Xantholobus trilineatus — Oak 



54. Xantholobus lateralis — Host unknown 



55. Ophiderma salamandra — Oak 



56. Ophiderma pubescens — White oak 



57. Ophiderma flavicephala — Host unknown 



58. Ophiderma flava — Host unknown 



59. Vanduzea arquata — Locust 



60. Entylia bactriana — Thistle, joe-pye weed, sunflower 

 6L Publilia concava — Goldenrod, skunk cabbage 



It is interesting to note that certain species common in many parts of 

 the country and having a wide geographical range shift from one host to 

 another in varied locahties. If the favorite host of the species is not repre- 

 sented a close relative is usually chosen. Thus, Carynota mera, common 

 on pecan in the South, is found in the Cayuga Lake Basin on hickory. 



In other cases the species seems to deliberately change its host even 

 tho an apparently more constant host is abundant. Thus, Enchcnopa 

 binotata, which in most parts of the United States seems to prefer the hop 

 tree (Ptelea trifoliata L.), is locally much more likely to be found on the 

 locust or on the butternut; Stidocephala inermis, found in many parts of 

 the country on alfalfa, has in this basin changed to sweet clover for food 

 and to apple and pear for oviposition. 



It has been noted that certain species change their hosts during the 

 life cycle, the nymphs migrating from the host on which the eggs were laid 

 to feed on another host and returning to the first for oviposition. These 

 cases have been discussed in the life histories of the separate species, 

 and may be illustrated without further discussion by referring to Ceresa 

 taurina, which lays eggs on apple but feeds on aster, and to Ceresa bubalus, 

 which lays eggs ori elm but feeds on sweet clover. 



