Plate o 



maxillae, labrum. hypopharynx, and othek parts 



Fig. 56. Monocesta coryli Say — Buccal side of left maxilla.* — Tactile papilla of 

 galea ; ga — galea ; la — lacinia. 



57. Monoxia consputa LeConte — Spiracular trachea (tr) with one-arme<:l 



closing apparatus ; (atr.) atrium. 



58. Monoxia consputa LeCoute — Spiracle. 



59. Monocesta coryli Say — Left mandible. Ventral view. 1, 2. 3, 4 — Four 



joints of palpus ; pff — palpiger. 



60. Monocesta coryli. Say — Tenth abdominal .segment from below, showing 



anus in center and six anal lobes. 



61. Monocesta coryli Say — Labium with ligula, hyi>*jpharjTix, buccal side 



of lacinia and galea, maxillary palpus and palpiger (notice that the 

 two muscles from the proximal end of the first joint of the maxillary 

 palpus extend through palpiger and attach themselves to stipes, and 

 that palpiger has no muscles extending from its proximal end) ; 

 cu — eulabium ; ga — galea ; hi/ — hypopharynx ; 7a — lacinia ; H — ligula ; 

 mt — mentuni ; pg — palpiger ; pit — pharynx ; stip — stipes. 



62. Monocesta coryli Say — Leg. cl — claw ; cox — coxa ; fe — femur ; po — 



paronychial appendix ; ti — tibia ; tr — trochanter. 

 63a-. Monocesta coryli Say — Lacinia, galea and hypopharynx facing the 



buccal cavity. 

 636. Monocesta coryli Say — Galea, mentum, labium with ligula. Ventral 



view. 



64. Trirhahda nitidieollis LeConte— Maxillae and hypopharynx ; hr — 



hypopharyngeal rod. 



65. Monoxia consputa LeCoute — Maxillae aud hypoijharynx (notice that 



maxillary palpus is three-jointed, second and Third joints having 

 fused). 



66. TrirhaMa canadensis Kirhy — Eight maxilla. Ventral view. 



67. GaleruceUa luteola Miiller — Right maxilla. Ventral ^iew. 



68. Monoxia puncticollis Say — Right maxilla. Ventral view. 



69. Galeruca tanaceti Linnaeus — Right maxilia. Ventral view. 



70. Oaleruca tanaceti — Ventral mouthparts and hypopharynx. Ventral 



view. 



71. ScrmyJassa halensis Linnaeus — Right maxilla. Ventral view. 



72. Agelastica alni Linnaeus — Right maxilla. Ventral view. 



73. Agelastica alni Linnaeus — Labium (notice the short distance between 



labial palpi). 



48 



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