LIST OF FIGURES . . vii
LIST OF MAPS . . ix

INTRODUCTION . . 1
Methods and Materials . . 2
Acknowledgments . . 3

SYSTEMATICS . . 4
Genus Aulacigaster Macquart . . 4
Implicit Attributes . . 6
Key to the Neotropical Species Groups and Species of Aulacigaster Macquart . . 9
The bromeliae Group . . 9
The ecuadoriensis Group . . 21
The femorata Group . . 31
The grimaldii Group . . 48
The minuta Group . . 52
The plesiomorphica Group . . 64
The leucopeza Group . . 83
Afrotropical Species . . 83
Key to the Afrotropical Species of Auladgaster . . 83
Nearctic Species . . 90
Key to the Nearctic Species of Aulacigaster . . 90
Group of Aulacigaster . . 100
Palearctic Species . . 104
Key to the Palearctic Species of Aulacigaster . . 104
Oriental Species . . 112
Key to the Oriental Species of Aulacigaster . . 112

PHYLOGENETIC ANALYSIS AND DISCUSSION . . 115
Characters Used in the Cladistic Analysis . . 115
Discussion . . 116

FIGURES 203-220 . . 121
APPENDIX: CHARACTER MATRIX . . 125
REFERENCES . . 127
INDEX TO THE SPECIES OF AULACIGASTER . . 131