GLOSSARY. 



391 



goat moth). — This bombyx lives three to five 

 years as a grub which attacks indifferently 

 weeping willows, poplars, elms, fruit trees, 

 larches, and many other trees ; it bores holes 

 into these trees of the thickness of a finger 

 which in multiplying form immense cavities 

 on the trunk. The caterpillar is naked, 

 bright red in colour ; it gives off a decided 

 odour of muslv. 



Crioceris asparagi (asparagus beetle)! 

 — Coleoptera (chrysomeli<le) of 6 millimetres 

 in length, steel blue elytra, with four bright 

 yellow spots. 



Crioceris duodecimpunctatctm. — Red- 

 dish-yellow coleoptera with six black points 

 on each elytrura. These crioceres appear in 

 the month of May. Their gi-eeu viscous larvse 

 attack the asparagus, the leaves of which 

 they gnaw. In June they bnry themselves 

 in the soil where they hibernate in a small 

 sheU. 



Crioceris melanopa (grain crioceris). — 

 This small (4| millimetres) coleoptera is 

 bluish ; it and also its larvae gnaw the epi- 

 dermis of lierbs and cereals. 



CURCULIONIDES (weevils). — Coleoptera 

 characterized by a prolongation of the in- 

 terior part of the head caUed the beak or 

 rostrum ; the form of the body is bomb- 

 shaped, for the elytra always surround the 

 lower part of the abdomen. The larvte are 

 polyphagous, they live in the interior of the 

 vegetable tissues (fruits, roots, stems, buds, 



Carrot Weevil [Molytes Coronatus). — 

 Brilliant black with some yellowish spots, 

 12 millimetres long. In May the eggs are 

 laid in the soD, the larvae penetrate into the 

 lower part of the carrot and ascend it by 

 excavating burrows. 



Ceutorht/nchus sulcicolHs (cabbage and 

 turnip gall weevil). — Black, 3 millimetres 

 long, appears in May, attacks all crucifers, 

 cabbage, rape, colza, turnips, mustard, etc. 

 The female lays its eggs in July in the roots 

 or the lower part of the stem. The larvae 

 attack the bark. The irritation produces a 

 liypertropliy of the parenchyma, generates 

 nodular galls which grow until the larvae 

 perforate them, to turn into grubs in the 

 soil. This insect is not dangerous except 

 when it develops in very large numbers. 



Curculio {Otiorhynchus) Ligustici. In 

 French Beccard (female salmon). — This 

 large brown weevil attacks fruit trees at 

 night, also cultivated crops such as Vetches 

 and Sniiif'diii. The female lays its eggs in 

 the ground. The larvae hatch in the middle 

 of summer and gnaw the roots until the 

 following spring, when they are metamor- 

 phosed to perfect insects about the end of 

 May. 



Curculio (Otiorhynchus) sulcatus (grooved 

 weevil otiorhynchus, vine black). — This 

 small weevil attacks the vine, the straw- 

 berry plant, and various ornamental plants. 

 It is chiefly reported from Bordeaux, Lan- 

 guedoc, and Burgundy. It appears about 

 the end of May in vineyards and browses 



on the buds and young shoots during the 

 night. Its larvae live underground at the 

 expense of the roots. 



Cunmlio ( Phytiiuomm) punctatus. — The 

 larvag riddle the leaves of trefoil and lucerne. 



Curnih'ii {Sif tines) liiieatus (striped pea 

 weevil). — Injures leguminosae, especially peas 

 and haricots. The perfect insest gnaws the 

 young leaves in the spring, tlie larv» gnaw 

 the roots. 



Currant Leaf Spot, see Glcesporidm 



RlBIS. 



Cdrrant Saw-fly (Ne)natus Ribis). 



CuscuTA epithymum (dodder of trefoil 

 and lucerne). — Tliese plants which are de- 

 prived of roots and of chlorophyll are essenti- 

 ally parasites of other plants from which 

 they draw nourishment by numerous suckers. 

 The latter are formed at all points where the 

 stem, enrolled as a tight spiral around the 

 nurse plant, touches the surface of t!ie latter. 

 They extend rapidly in fields where the ex- 

 hausted and dead plants form large spots.. 

 The rose-white fiowers form seeds from which 

 issue the young plants which crawl before 

 fixing themselves and are even conveyed by 

 the wind to a gi-eat distance. 



Dasyscypha Wilkommi (canker of the 

 bark of the larch). — The canker of the bark 

 of the larch often causes very great ravages. 

 The first symptom is manifested by a yellow 

 tint which the branches assume, the leaves 

 fade and there is almost always a flow of 

 [oleo] resin which is produced at a point 

 where the bark is swollen and broken. On 

 the dead and dried bark appear small white 

 spots whicli, when the conditions favour their 

 growtli, develop into small cupules of pezize, 

 white velvety outside and bright red on the 

 upper surface. The mycelium of the fungus 

 penetrates through the medullary rays and 

 the resiniferous vessels. 



Dematophora necatrix (white root rot). 

 French names : Blanc des racines, Morta- 

 duse, Terre-bete, Grappe, Morille, Charnie, 

 Pourridie de la Vigne. — This fungus lives at 

 the expense 'of the roots of the vine, fruit- 

 trees, mulberry-trees, fig-trees, maple-trees, 

 oak-trees, and soon kills the tree. Its mycelium 

 forms round the roots a white cotton-wool 

 which afterwards assumes a greyish tint. It 

 penetrates deeply into all the anatomical 

 elements of the root, and it is only when the 

 plant is dead that it produces fructifications. 

 The wliitc niiit rot is cspi-riidlv attributed 



to tlh- S/,/n, rnirn, J >r„l ,- fn/,/,ara, but this 



funi^iis is n.it tlic I inly ,,\i,- .apahle of pro- 

 ducini,' this ]ih\siiil(iui,;il cDiiditinn of fruit 

 trees. " Then- an- also . I ,■„/ ,7/,,ri,/ „/,//,„ [q.v.) 

 and Roesleiiii //////<•</, v(.(ir\vlii(l; the mycelium 

 invades the roots of trees iu an analogous 

 manner and causes the rot of the latter. A 

 vine attacked by this fungus languishes- 

 rapidly and finally dies. 



DOTHICHIZA populea. — This fungus pene- 

 trates into the wood of the poplar through 

 wounds and kills the parts invaded. 



Dry Rot, see Merulius lacrymans. 



EUCHLORA viTis (Anomala vitis, greeu 



