A preliminary introduction to the study of entomologyTogether with a chapter on remedies, or methods that can be used in fighting injurious insects; insect enemies of the apple tree and its fruit, and the insect enemies of small grains . Fio. Z(S^.—Mesograpia polita: a, larva; b, pupa: c, imago—all enlarged.—[Insect ] other Diptera under the group name Orthorhapha, Those which followare placed in the group Cyclorhapha by systematists. The grounds forthis separation are based on the manner in which the several forms belonging to the different families form their pupa cases. The family SYR
A preliminary introduction to the study of entomologyTogether with a chapter on remedies, or methods that can be used in fighting injurious insects; insect enemies of the apple tree and its fruit, and the insect enemies of small grains . Fio. Z(S^.—Mesograpia polita: a, larva; b, pupa: c, imago—all enlarged.—[Insect ] other Diptera under the group name Orthorhapha, Those which followare placed in the group Cyclorhapha by systematists. The grounds forthis separation are based on the manner in which the several forms belonging to the different families form their pupa cases. The family SYRPHTca: or Sun-flies is very extensive. Prof. S. , in his synopsis of the family for North America, says of them:The family of Syrphidse is one of the most extensive in the order of TO THE STUDY OF ENTOMOLOGY. 107 Diptera. Nearly or quite two thousand species are known from through-out the world, and many new forms are constantly being added. Thejcontain among them many of the brightest colored flies, and numerousspecimens are sure to appear in every general collection of insects. None. Fio. 20Q.—MaUota posticata and puparia.—[After Lintner]. are injurious in their habits to mans economy, and many of them arevery beneficial. The larvge of these flies are predaceous in their foodhabits—feeding for the most part on plant-lice of different kinds. Afew of them are aquatic in their larval state. One of these is shown inPig. 206, where it is figured both as imago and larva. The family , of which the accompanying illustration rep-resents one species, is composed of moderately small flies that bear a general resemblance tothe house-fly and someof the flesh-flies thatare known to live asparasites within thebodies of other of the representa-tives of this family areknown to be vegetable^^ feeders. A few of 1 hem4 are, however, destroy-ers of locust eggs. Theone figured being ofthis latter class. The flesh-flies belonging to the family Tachinid
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectinsects, bookyear1894
