MOTH GALLS 55 



Gypsonoma actrimia Dup. : Young branches swollen. 

 Sciapteron tabaniforme Rott. : Knotty swellings on the 



shoots. 

 Poplar, (Jrey {Populus camscens, Sm.). 

 Gypsonoma aceriana Dup. : Young branches swollen. 

 Poplar, White (Populus alba Linn.). 

 Gypsonoma aceriana Dup. : Young branches swollen. 

 Sciapteron tabaniforme Rott, var. rhingiaeforine Hiib. : 



Branch swollen. 

 Ragwort, Common (Senecio Jacebaea Linn.). 

 Phalonia atricapitana Ste. : Stem swollen. 

 Ragwort, Marsh {Senecio aquaticus Hill.). 

 Platyptilia isodactyla Zell. : Stem swollen. 

 Willows {Salix, various species, see catalogue). 

 Grapholitha Servilleana Dup. : Fusiform swellings on the 



older branches. 

 Willow Herb {Epilobium, several species, see catalogue). 

 MompJia decovella Steph. : Swelling in the stem. 



The resin gall moth (Rhyacionia* resinella = Refinia resin- 

 ella) occurs chiefly in the northern part of England and in 

 Scotland. It is common in parts of Perthshire and Inver- 

 ness. Mr. Adkin gives the life-history as follows : " The 

 egg is deposited on the twigs of the Fir, and, upoti hatching, 

 the young larva eats through the bark, forms the narrow 

 gallery, and feeds upon the soft wood of the tender shoot 

 then growing, this operation probably occupying its first 

 summer. It now taps the bark on the opposite side to that 

 by which it entered, and causes the sap to flow, which by its 

 own weight spreads along the twig in the direction of the 

 stem, congeals, and forms a resinous lump, the inside of 

 which the larva gnaws away, at the same time devouring 

 the bark and a portion of the wood next to it, as it becomes 



* The genus Retinia, though a well-established one, was displaced 

 by Evetria. The latter has been recently replaced by Rhyacionia — 

 a typical instance of the senseless and irritating changes in nomen- 

 clature which are constantly being made in gJl departmepts of zoology 

 and botany. 



