214 
BRITISH GALLS 
Diptera 
y9 
9 9 
Hymenop- 
tera 
Diptera 
Coleop- 
tera 
99 
Flowers deformed. See No. 589. 
Contarinia CRACCAE Kieffer 593 
Connold, Veg. Galls, pi. 122 ; Plant Galls, fig. 302, 
attributed therein to Contarinia loti De Geer. Houard, 
No. 3693. 
Margins of the leaflets rolled back, swollen, forming a 
hard pod. Sometimes many leaves are attacked. July 
to October. Larvae gregarious, white. M. G. Imago, 
spring, II. 
Perrisia viciae Kieffer 594 
Trail, Scot. Nat., II., 1873, P- ; Trans. N. H. Soc. 
Aberdeen, 1878, p. 59. 
Connold, Plant Galls, fig. 301, attributed therein to 
Contarinia loti De Geer. Houard, No. 3696. 
Leaflets with revolute margins which meet to form a 
pod ; the midrib, which is often much swollen, forms the 
keel of the pod. Larvae gregarious, usually five to seven 
in a leaflet, reddish. M. E. 
Perrisia lathyricola Riibs. 595 
Syn. Cecidomyia lathyri Frfld. 
Connold, Veg. Galls, pi. 80 ; figs. 237, 238. Houard, 
No. 3771. 
Lathyrus montanus Bernh. 107. Tuberous Bitter 
Vetch. 
Woody swelling on the rhizome, 10 mm. long, and 
12 to 14 mm. in maximum diameter. 
Aulax sp. 596 
Cameron, 1893, p. 205, pi. ix. 4. Houard, No. 3780. 
EUPHORBIACEAE 
Euphorbia Esula Linn. Leafy-branched Spurge. 
Terminal leaves deformed, much enlarged, forming a lax 
globose gall containing numerous orange-red larvae. M. G. 
Perrisia capitigena Bremi 597 
Syn. Dasyncura capitigena Bremi. Cecidomyia euphor- 
biae, Low. 
Connold, Plant Galls, p. 246. 
Mercurialis perennis Linn. 107. Dog’s Mercury. 
More or less elongated ovoid swellings on the stem, 598 
branches, flower stalks, and occasionally on the petioles. 599 
Apion semivittatum Gyllh. 599^ 
Houard, No. 3867. 599^ 
Mercurialis annua Linn. 42. Annual Mercury. 
Stem swollen. See No. 599. 
Apion semivittatum Gyllh. 600 
Houard, No. 3865. 
