. The insect book [microform] : a popular account of the bees, wasps, ants, grasshoppers, flies and other North American insects exclusive of the butterflies, moths and beetles, with full life histories, tables and bibliographies. Insectes; Insects. M THE TACHINA FLIES. (Fiituily Tachinidiv.) This is a larno and important group of flics, the members of which have po common name except that of 'tachina llies, ' by which thev are generally known to everyone who has studied insects, even if his studies have not carried him into the order Diptera. for all or nearly ail of these creatures are paras
. The insect book [microform] : a popular account of the bees, wasps, ants, grasshoppers, flies and other North American insects exclusive of the butterflies, moths and beetles, with full life histories, tables and bibliographies. Insectes; Insects. M THE TACHINA FLIES. (Fiituily Tachinidiv.) This is a larno and important group of flics, the members of which have po common name except that of 'tachina llies, ' by which thev are generally known to everyone who has studied insects, even if his studies have not carried him into the order Diptera. for all or nearly ail of these creatures are parasitic upon other insects and a person engaged in rearing caterpillars will often have his ultimate design frustrated through the work of the of these (lies. As a rule they are medium sized or rather large tlies of a grav tint, rather unattractive in appearance and perhaps resembling the common house-tly as a rule. In fact, one mav sav that they belong to the house-fly tvpe. The gray body color is frequently striped with dark HI lighter stripes and there are some exceptions to this general colorational scheme as. for example, in the dark-winged, sometimes red- dish-bodied Trichopodas. the slender Xanthonielienas and red- bodied and those species of the genus Ardtylas v>'hich look like blue-bottle llies. In general the wings are the bodies .ire somewhat bristiv .ind the insects lly with a buz/ing sound which is not very pronounced but like of a house-llv. They are .ictive and tlv usually in the sunshine, being much less in evidence i ii c! )udv In their relations with man the tachina flies are beneticial - the most beneficial group t)f Diptera. with the possible exception of the syrphus llies. With the llies. however, the habits .ire much more uniform and the teed onlv upon living insects. Hv far the favorite hosts of these flies are the and the numbers which are destroyed
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectinsects, bookyear1901
