ON HAWKWEEDS 
249 
Diptera Capitulum swollen, containing one to four white larvae. 
Tephritis ruralis H. Low 864 
Houard, No. 6196. 
Nematoda Flower-head swollen, remaining closed, stalk contorted, 
sometimes cocted on its axis ; yellowish-green. 
Tylenchus hieracii Connold 865 
Connold, Plant Galls, fig. 124. Trail, 1883. Houard, 
No. 6198 (without name). 
Hieracium vulgatum Fries. 90. Common Hawkweed. 
Hymen- Longitudinal or rounded swellings on the roots and 
optera stem, greenish-yellow and pubescent at first, becoming 
brown and glabrous. June to August. Larvae yellow. 
M. G. 
Aulacidea hieracii Bouch6 866 
Syn. Aulax hieracii Sch. 
Connold, Veg. Galls, pi. 38 ; Plant Galls, fig. 125 (as on 
H. sylvaticum Gouan, but this is doubtful). Houard, 
No. 6165. 
Acari Leaf margin rolled upwards and serrated. 
Eriophyes longisetus Nalepa 867 
Trail, 1885. Houard, No. 6167. 
Hieracium boreale Fries. 96. Savoy Hawkweed. 
Hymen- Swellings on stem and roots. See No. 866. 
optera Aulacidea hieracii Bouchd 868 
Inchbald, 1865, p. 46. Connold, Plant Galls, p. 114. 
Houard, No. 6145. 
Diptera Swollen and woody ovary. 
Trypeta reticulata Sch. 869 
Trail, 1878, p. 66; Fitch, 1879, p. 257. Connold, Plant 
Galls, p. 245. Houard, No. 6142 (without specific 
name). 
,, Leaf folded. 
Macrolabis corrugans F. Low 870 
Syn. Cecidomyia corrugans F. Low. 
Connold, Plant Galls, p. 245. 
Hieracium umbellatum Linn. aggr. 88. Umbellate 
Hawkweed. 
,, Capitulum swollen, containing one to four larvae. 
Carpotricha papillata Fallen 871 
Fitch, Entomologist, 1879, p. 257. Houard, No. 6151. 
