BEETLES. 



34^ 



- Phsoiles strnhi ; larva, pupa, 

 ami adult. 



protuotion, :i i>:irt of :x plant. The larva- and coeoous of Plu/tonomiis, of Fh^/tohuis^ 

 and of a few other genera of weevils are not greatly unlike those of Cioiuis. C. 

 scroplud'.trin remains in the inqial state only from six to eight days; it eseajies from 

 its chrysalis by cutting a round lid out of one end of the cocoon. 



Anthoiio/iius qiiadriijibbus is a reddish-brown weevil, from 0.12 to 0.20 of an inch 

 long, having a jiroboscis in the female longer and in the male shorter than the body ; 

 this species, which is found in the eastern United States, is easily recognized by its 

 having two protuberances, one behind the other, near the tiji of each elytron. Its 

 larvie feed in apples, pupation taking jilace within the fruit. 



Tlie genus Lixus includes rather elongated weevils, in .some of which the tijis of 

 the elytra are prolonged into a sjune. The species 

 are usually covered with a yellow or reddish j)ollen- 

 like powder, which is easily rubbed off. L. voitcai'us, 

 a common species in parts of the eastei'ii United 

 States, is found upon a kind of dock (liiimex- orbir- 

 nlatiin) ; its length is U.ti of an inch, and it has s]iine- 

 less elytra. 



I'issodes strubi, the three states of which are 

 surticieiitly recognizable from the illustrations, is 



aliout (l.o of an inch long, and is dark brown, spotted with white. It 

 inhabits the eastern Ignited States, where its larva attacks the leading 

 shoots of young jiines. In Eurojie five species oi Pissodes am known 

 to attack ])ine. Quite closely related, systematically, to Pissodes, but 

 larger (0.27 to 0.40 of .an inch), and dark brown, with a few scattered 

 yellowish dots, is Ili/lobixs pales ; this species is found in the same re- 

 oions as P. sfrobi, and, like it, attacks pines. 



P/ii//uJiiiiii'-itt jiuncUtttis, proliably introduced into America from 

 Europe, where its food habits and life history had not been carefully 

 recorded, has become, in ])arts of Xew York state, an imjiortant 

 It is an (i\al beetle, about (1.4 of an inch long, with short jiro- 

 boscis; its ground color is dark brown; the sides of the elytra, and often the 

 elytral suture, are lighter lirown, as are also three longitudinal lines on the smooth 

 thorax. The elytra are jnmctate in lines. The eggs of tliis s|iccies are oblong, 

 yellow, and are deposited in clustt-rs in the hollow stems or other parts of clover 

 plants. The larvw hatch in about ten d.ays ; they are yellowish white at hatch- 

 ing, but become greenish as they approach full growth. They are legless, but travel 

 upon the stems and leaves of the clovei' by means of fleshy tubercles u]ioii tlieir 

 ventral side, aided by a gl.'ind in the anal region, which secretes a sticky fluid. ^lany 

 of the larva; cease feeding during the day-time, remaining concealed near the jilants, 

 and all except very young larv:e drop to the ground when disturbed, so that one 

 cannot readily observe them upc.m the jilaufs. When ready to pupate, the larva spins 

 a loose cocoon just below the surface of the ground, or in rulibish uj)On the ground. 

 The duration of the pujial state apjiareiitly varies from ten to thirty days, according 

 to climate. 



Lepi/rus is similar in form to PJii/totioiitus. Z. colon, an ashy-gray Euro])ean 

 species, about 0.4;i of an inch long, is found in Hudson's Bay Territory, and is very 

 common on the stunteil willows near the summits of tin- White ^Jlountains in Xew 

 Hampshire. 



Vl(i.2»i. — iIi]lo- 

 bius pali'S. 



I'lov 



er insect. 



