«44 

 Diptera 



Coleop- 



tera 



Diptera 



Homop- 

 tera 



Diptera 



BRITISH GALLS 



Galls resembling hemp seed on various parts of the 

 plant. See No. 815. 



Rhopalomyia millefolii H. Low 823 

 Trail, 1878. Houard, No. 5703, 5707. 824 



Anthemis Cotula Linn. 76. Fetid Chamomile. 



Receptacle deformed, gldbular and subovoid (the 

 normal form is an elongated cone), becoming twice as 

 thick as the base of a healthy one. Its wall is thick and 

 hard ; the ovoid cavity contains a white larva. M. G. 

 Imago, spring, I. 



Apion laevigatum Payk 825 



Houard, No. 5667. 



Receptacle elongated, cylindrical, hard, with an ovoid 

 cavity containing one or more larvae. M. G. Imago in 

 September. 



Apion sorbi Herbst. 826 



Houard, No. 5668. 



Anthemis arrensis Linn. 73. Corn Chamomile. 

 Receptacle elongated. See No. 826. 



Apion sorbi Herbst. 827 

 Houard, No. 5663. 



Chrysanthemum Leucanthemmu Linn. 112. Great 

 White Oxeye. 



Pea-like fleshy galls on the top of the root, containing 

 numerous larval cells the size of a millet seed. 



Tephritis proboscidea H. Low 828 



Houard, No. 5734. 



Leaf deformed ajid bent. See No. 850. 



Aphis cardui Linn. 829 

 Houard, No. 5739. 



Tanacetum vulgare Linn. 105. Tansy. 



Stem, leaves, and flowers attacked The galls are very 

 like those induced by the larvae of Rhopalomyia millefolii, 

 H. Low (see No. 815); the teeth at the aperture are 

 rather more sharply pointed. Solitary or gregarious, 

 each gall containing a single flesh-coloured larva. M. G. 830 

 Imago, spring, I. 831 



Rhopalomyia tanaceticola Karsch 832 



Syn. Hormomyia tanaceticola Karsch. 



Contiold, Plant Galls, fig. 291. Houard, No. 5730, 5752, 

 5754- 



