Report of the State Entomologist. 25 



overlooked up to the present), one is the seventeen-year cicada (com- 

 monl}', hut improperly, called locust). Cicada i^epiendecim. Its injuries 

 are inflicted b^-- the female boring into the twigs for the deposit of its 

 eggs. It has not been observed to oviposit in pines (l.s^ Bejjt. Jnx. 

 Mo., p. 24). The other, Lioderma ligata, or the bound tree-bug, so 

 named from the red band surrounding its margin, is 

 represented by Dr. Fitch, as •' sometimes clinging on 

 this tree, and probably sucking the juices of the leaves." 

 It may not, however, be accepted as au injuriou.s species 

 Aiithout further observation of its habits, as several of 

 its near relatives are known to subsist upon the juices 

 of other insects which infest our trees. Dr. Fitch, in Fig. s-The bound 

 his 3d Report, page 71, No. 100, includes this insect, .lttlr^^\^,.,S, 

 under the name of Pentatoma ligata, among those which (Aftor Glover). 

 affect the leaves of grapes by puncturing them and sucking their 

 juices. It is sliown in Figure 8. 



Of the Orthoptera, the Eocky Mountain locust, Caloptenus .^pretus 

 (Figure 9), according to Prof. Riley, in ~^ ^^^^ 



periods of its abundance, often strips iM^^^^^?^ ■'■^^f^^^ 



the leaves of the hemlock, arbor-vitsc, ^JT'^-^^^^^^^^^^^^'^'^^. 

 the pines, and the Noi'way spruce. The "^""^^ ^^^'^^^^^^^"'^^ 

 injui'y to these evergreens is serious. Fig. 9.— The Rocky Mountain Locust, 

 as they are much more sensitive to Caloptenus spretus— Female. 

 defoliation than deciduous trees. {Fust Report U. S. Entomological 

 Commission, p. 253.) 



Several of the insects noticed above are believed either to attack 

 only sickly or diseased trees, or those already dead, yet their opera- 

 tions and their history may be quite as important and as deserving of 

 observation and study as those which confine their attacks to living 

 and healthy vegetation. This view of the comparative importance of 

 the two classes has been so ably presented by Dr. Asa Fitch, that we 

 quote from his Fourth Report on the Insects of New Yorh (1859, pp. 2,3), 

 a portion of his remarks prefatory to his consideration of the Insects 

 Infesting Evergreen Forest Trees : 



" The evergreens are so highly -esteemed for ornamental purposes, 

 and some of them, particularly the pines, are so valuable on account 

 of the timber that they yield us, that we are much interested in 

 knowing the insects which we have in this country, which infest these 

 trees to their injury, either by stunting their growth, marring and 

 deforming them, or causing their premature decay and death. For- 

 tunately for us, it is upon trees that are sickly and decajdng, or upon 

 their dead trunks and timber, that most of these insects make their 

 19 



