PACHYBRACHINA

Chamorro-Lacayo, Maria Lourdes & Konstantinov, Alexander S., 2004, Morphology of the prothorax and procoxa in the New World Cryptocephalini (Coleoptera: Chrysomelidae: Cryptocephalinae), Zootaxa 676, pp. 1-46 : 10-11

publication ID	https://doi.org/ 10.5281/zenodo.158400
DOI	https://doi.org/10.5281/zenodo.6272779
persistent identifier	https://treatment.plazi.org/id/03E8879E-9504-FFF7-FEE0-80C5863DFCB1
treatment provided by	Plazi
scientific name	PACHYBRACHINA
status

Treatment

PACHYBRACHINA

PRONOTUM: Denticles absent on basal margin ( Figs. 85 View FIGURES 85 – 87 , 88 View FIGURES 88 – 93 , 100 View FIGURES 100 – 105 , 108 View FIGURES 108 – 113 , 118 View FIGURES 118 – 125 , 131 View FIGURES 131 – 136 ); basal margin convex and sinusoidal, mesally truncate over mesoscutellum; pronotal punctures distinct throughout, strongly pronounced on all margins (Figs, 90, 102, 120). HYPOMERON: Hypomeral projection flat ( Figs. 86 View FIGURES 85 – 87 , 91 View FIGURES 88 – 93 , 103 View FIGURES 100 – 105 , 111 View FIGURES 108 – 113 , 123 View FIGURES 118 – 125 ); hypomeron with distinct punctures. PROSTERNUM: Prosternum similarly or more coarsely punctured than hypomeron; intercoxal prosternal process unimodal (Figs, 85, 88, 100, 108, 118, 122); intercoxal prosternal process without caudal Mshaped rim ( Figs. 91 View FIGURES 88 – 93 , 103 View FIGURES 100 – 105 , 111 View FIGURES 108 – 113 , 123 View FIGURES 118 – 125 ); prosternal opening narrowly open or closed in caudal view; posterior margin of intercoxal prosternal process convex, projecting beyond hypomeron ( Figs. 85 View FIGURES 85 – 87 , 88 View FIGURES 88 – 93 , 100 View FIGURES 100 – 105 , 108 View FIGURES 108 – 113 , 118 View FIGURES 118 – 125 , 131 View FIGURES 131 – 136 ); anterior margin of prosternum uniformly concave; intercoxal width equal to, greater than, or less than width of coxal cavity. TROCHANTER: With two dorsoproximal ends, with a subapical projection, or with only one dorsal end ( Figs. 87 View FIGURES 85 – 87 , 106–107 View FIGURES 106 – 107 , 114–116 View FIGURES 114 – 117 , 128–130 View FIGURES 126 – 130 , 134–135 View FIGURES 131 – 136 ).

Pachybrachis : Basal margin of pronotum sinusoidal ( Figs. 85 View FIGURES 85 – 87 , 88 View FIGURES 88 – 93 ). Prosternum and hypomeron equally coarsely punctured; prosternal opening closed in caudal view; anterior margin of prosternum uniformly concave ( Figs. 85 View FIGURES 85 – 87 , 88 View FIGURES 88 – 93 ); intercoxal width less than width of coxal cavity. Trochanter with subapical projection on dorsoproximal end ( Fig. 87 View FIGURES 85 – 87 )

Griburius : Basal margin of pronotum sinusoidal ( Fig. 108 View FIGURES 108 – 113 ). Prosternum more coarsely punctured than hypomeron; prosternal opening closed, in caudal view ( Fig. 111 View FIGURES 108 – 113 ); anterior margin of prosternum uniformly concave ( Fig. 108 View FIGURES 108 – 113 ); intercoxal width greater than width of coxal cavity. Trochanter with one dorsal end ( Figs. 114–116 View FIGURES 114 – 117 ).

Ambrotodes : Basal margin of pronotum sinusoidal ( A. signatipennis ) ( Fig. 131 View FIGURES 131 – 136 ) or convex and mesally truncate ( A. chilensis ) ( Fig. 118 View FIGURES 118 – 125 ). Prosternum more coarsely punctured than hypomeron; prosternal opening slightly open in caudal view ( Figs. 121 View FIGURES 118 – 125 , 132 View FIGURES 131 – 136 ); intercoxal cavity less than ( A. chilensis ) or greater than ( A. signatipennis ) width of coxal cavity. Trochanter with one dorsal end ( Figs. 128–130 View FIGURES 126 – 130 ).

Metallactus : Basal margin of pronotum sinusoidal ( Fig. 100 View FIGURES 100 – 105 ). Prosternum more coarsely punctured than hypomeron; prosternal opening closed, in caudal view ( Fig. 103 View FIGURES 100 – 105 ); intercoxal width equal to width of coxal cavity ( Fig. 100 View FIGURES 100 – 105 ). Trochanter with two dorsoproximal ends ( Figs. 106–107 View FIGURES 106 – 107 ).