Insects affecting the orange . gatedform of the scale are the principal differences between this scale andthat of the female of Ch. euonj/mi. There is no danger of its being mis-taken for any other known species. ^^ Female.— * * * This species may readily be distinguished from(Jk. euonymi by the following characters: There are no groups of spin-nerets; the mesal lobes are larger and more distinctly serrate than in?Ch. euonynd; and in the last-named species the plates are in twos, while,in Vh. citri they occur singly. According to observations made by Mr. L. O. Howard, the OrangeiChionaspis is
Insects affecting the orange . gatedform of the scale are the principal differences between this scale andthat of the female of Ch. euonj/mi. There is no danger of its being mis-taken for any other known species. ^^ Female.— * * * This species may readily be distinguished from(Jk. euonymi by the following characters: There are no groups of spin-nerets; the mesal lobes are larger and more distinctly serrate than in?Ch. euonynd; and in the last-named species the plates are in twos, while,in Vh. citri they occur singly. According to observations made by Mr. L. O. Howard, the OrangeiChionaspis is theespecial pest of orange groves in Louisiana. Ithasbeenfound by him at Pattersonville, Saint Marys Parish; at Woodville, 50 * This i)arasite is evideutly an Aphelinus, but tlie only specimen in Mr. Habbardscollection is too poor for specific determination. —C. V. R. THE OKANGE CHIONASPIS. 41 miles below New Orleaus; on tlie Mississippi Paver above Algiers, andon the east side of the river in the New Orleans Mm SI Fir. 10.— Chionaopin eunmjmi Comstock. 10, scales on Eiionj-mus, natural size; a, scale of nialo, en-Iai;;ed ; 6, scale olliiualo, culaiged. (Alter ) Fig. 10 represents Chionaspis euonymi Comstock, to wLicli the abovespecies is very closely allied. CHAPTER III. DIASPIN^— OF THE ARMORED SCALES- Barhlice omnipresent in Orange Groves.—In the foregoing pages an ac-count has been given of all the species of Diaspiuse known to attackcitrus plants in this country. The appearance, distiuguishing char-acters and habits of each have been set forth with sufficient clearness,it is hoped, to render recognizable by orange-growers the different mem-bers of this group of insect pests, the most destructive and formidablewith which they have to contend. It remains to consider the natureand extent of the injuries they inHict and the conditions under whichthe plant becomes liable to attack. It may be premised that in all countries where
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