INSECTS INJURIOUS TO CELERY, PARSNIPS, ETC. 185 



The adults issued June 23. The insect which produces this 

 maggot is shown at figure 118, «. It belongs to the same family 

 as the apple maggot or railroad worm, and it will be seen that 

 it is a two-winged fly, with rather prettily marked vv'ings. It is 

 pale dull yellow, and the wings are marked with the same color. 

 The legs are still paler, and the eyes are brown. The head and 

 thorax above bear long, stiff bristles. This fly measures about 

 three-sixteenths of an inch in length, and has a wing expanse 

 at least double that. It ranges from the Atlantic seaboard 

 westward to Missouri and probably farther. Little is known 

 of its life history, but it will probably be found to affect other 

 umbelliferous crop plants and weeds. 



Remedies advised against the radish leaf-miner (page 154) 

 are applicable. 



The Carrot Beetle (Ligynts gibbosus DeG.). — This, beetle is 

 the worst insect enemy to carrot and parsnip in this country. 

 It is a native species and of common oc- 

 currence along the Atlantic Coast from 

 Long Island to the Gulf and Pacific States 

 and at many points inland. It injures be- 

 sides the plants specified various root 

 crops and some other plants. 



The beetle might be mistaken for a May 

 beetle, but the wingcovers are strongly 

 sculptured and coarsely punctate, char- 

 acters which are wanting in true May ^.^ Ti 9. Carrot feetie. 

 beetles (Lachnosterna). The beetle (fig. About twice natural size. 

 1 19) is of robust form, measuring between J.^^^^^X^r.'^"''"""" ""' ^' 

 one-half and five-eighths of an inch in 



length, with short legs. The color varies from reddish brown 

 to nearly black on the dorsal surface. Larval injury has been 

 noted, but there is little doubt that the grubs feed also on humus, 

 manure and decomposing roots and tap roots of herbaceous 

 plants. Larv?e have been observed to feed on earth where there 



