Morphology and taxonomy of the first instars of the genus Cerococcus Comstock (Homoptera:Coccoidea:Cerococcidae)

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dc.contributor.authorHamon, Avas B.en
dc.contributor.committeechairKosztarab, Michaelen
dc.contributor.committeememberAllen, William A.en
dc.contributor.committeememberMiller, Orson K. Jr.en
dc.contributor.committeememberEaton, John L.en
dc.contributor.committeememberTurner, E. Craig Jr.en
dc.contributor.committeememberGrayson, James McD.en
dc.contributor.departmentEntomologyen
dc.date.accessioned2014-03-14T20:10:28Zen
dc.date.adate2009-04-22en
dc.date.available2014-03-14T20:10:28Zen
dc.date.issued1976-09-15en
dc.date.rdate2009-04-22en
dc.date.sdate2009-04-22en
dc.description.abstractThe taxonomy of species in the genus <i>Cerococcus</i> has been unstable and adequate keys and descriptions have not been available for identification. This detailed study of the first instars is one step in the revision of the genus and reevaluation of the taxa which have been referred to the genus. The first instars of 31 species of <i>Cerococcus</i> are included in this study. Each species studied is fully described, including measurements of morphological characters, and illustrated. <i>Cerococcus</i> first instars were found to have well developed legs; well developed mouthparts with a 3-segmented labium; 6-segmented antennae; 2 pairs of spiracles with associated quinquelocular pores; acornshaped spiracular setae or regular setae-shaped spiracular setae; well developed anal lobes which are armed with spines on the inner margin and terminated by long apical setae; large conspicuous dorsal B-shaped pores in longitudinal rows; dorsal trapezoid-shaped anal plate; and 6 setae on the anal ring. The classification of <i>Cerococcus</i> first instars generally agreed with the classification of the adult females, and keys are provided for separation of the first instars studied. Species of the genus <i>Cerococcus</i> were found to be morphologically distinct from the species in the genera <i>Asterococcus</i> and <i>Solenophora</i>. It appears that the genus <i>Cerococcus</i> is only distantly related to the genera in the families <i>Asterolecaniidae, Eriococcidae</i>, and <i>Lecanodiaspidiae</i>.en
dc.description.degreePh. D.en
dc.format.extent167 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-04222009-040355en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-04222009-040355/en
dc.identifier.urihttp://hdl.handle.net/10919/27134en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V856_1976.H345.pdfen
dc.relation.isformatofOCLC# 40188808en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectinstarsen
dc.subject.lccLD5655.V856 1976.H345en
dc.titleMorphology and taxonomy of the first instars of the genus <i>Cerococcus</i> Comstock (Homoptera:Coccoidea:Cerococcidae)en
dc.typeDissertationen
dc.type.dcmitypeTexten
thesis.degree.disciplineEntomologyen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.leveldoctoralen
thesis.degree.namePh. D.en

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