19S 



COLEOPHORA SERENELLA. 



[Plate V. Fig. 3. 



and rather flat, but with large pro- 

 jections on the sides, from the pieces 

 ofleaves (of which the case is made), 

 added towards the mouth of the case, 

 being very much wider than is ne- 

 cessary ; it was this peculiar forma- 

 tion of the case which led Reaumur 

 to designate the insect as " la Teigne 

 a Falbalas." The larvae do not feed 

 much in the autumn, but soon retire 

 to the stem of the plant, and, fixing 

 themselves there, remain stationary 

 throughout the winter. In the month 

 of May they recommence feeding, 

 and the blotches they then make 

 are of a considerable size. Early in 

 June the larvae are full fed, and in 

 three or four weeks' time the perfect 

 insect appears. 



Description of the Imago. 

 This belongs to that section of the 

 genus in which the anterior wings 

 are of a bright yellow, and the basal 

 joint of the antennae is furnished 

 with a tuft. The species to w r hich 

 it comes nearest are CoronilUe and 

 Bilineutella ; from the latter it is dis- 

 tinguished by its paler colour, by 

 the costal streak not being expanded 

 beyond the middle, and not reaching 

 so far towards the apex ; besides, 

 the tuft at the basal joint of the 

 antennae is white in Bilineatdla and 

 yellowish in Serenella. From Coro- 

 irillce it is very readily distinguished 

 by its much smaller size, by the 

 shorter tuft at the basal joint of the 

 antennae, and by the greater breadth 

 of the costal streak. 



pocrepis comosa.) Le fourreau est 

 courbe, d'un jaune blanch&tre et un 

 peu applati, mais garni de grandes 

 protuberances aux cotes, a cause des 

 morceaux de feuilles minees (dont 

 le fourreau est construit), qui y sont 

 ajoutes, etant beaucoup plus grands 

 vers la bouche qu'il n'est necessaire; 

 ce fut cette conformation singuliere 

 qui porta Reaumur a designer ces 

 insectes sous la denomination de 

 " Teignes a Falbalas." Les chenilles 

 ne mangent pas beaucoup en au- 

 tomne, mais se retirent bientot vers 

 la tige de la plante, et y restent im- 

 mobiles pendant l'hiver ; au mois de 

 Mai elles recommencent a manger, 

 et forment bientot des taches d'une 

 grandeur considerable. Au com- 

 mencement de Juin les chenilles ont 

 atteint tout leur developpement, et 

 trois ou quatre semaines apres le 

 papillon est eclos. 



Description du Papillon. 

 II appartient a la section du genre 

 chez Iaquelle les ailes anterieures 

 sont d'un jaune vif, et l'article basi- 

 laire des antennes est garni d'une 

 touffe; les especes auxquelles il res- 

 semble le plus sont la Coronillce et la 

 Bihneatella ; de cette derniere on dis- 

 tingue la Serenella a sa couleur plus 

 pale, a la strie costale non repandue 

 au-dela du milieu, ni prolongee si loin 

 vers le bout ; en outre la touffe de 

 l'article basilaire des antennes est 

 blanche chez la Bilineatdla, et jaun- 

 dtre chez la Serenella ; de la Coro- 

 nillce on la distingue assez facilement 

 a sa taille beaucoup plus petite, a la 

 touffe de l'article basilaire des an- 

 tennes plus courte, et a la largeur 

 plus considerable de la strie costale. 



