The Corydiidae (Polyphagidae, sensu lato) is a family of extremo-phile cockroaches that have received little taxonomic attention. Their cryptic subterranean way of life in some of the most in-hospitable parts of the planet makes the study of this group particularly difficult. Arenivaga (Rehn) is a genus of Corydiid cock-roach endemic to the American Southwest, Florida, and Mexico. This unusual group of insects, not examined in nearly a century, is revised in this volume. This work includes redescriptions of the genus and its nine known species, descriptions of 39 new species, a key to the adult males, and distribution maps for each species. A photographic series of the habitus and detailed drawing of the genitalia of each species are also provided, and novel morphological characters are described. In addition, the locality data of more than 5000 specimens used in this study is now available to researchers. Even though this research increases the number of species in Arenivaga five-fold, there is little doubt that there are many more species to be found in Mexico, which is poorly surveyed in comparison to the US terrain.
Contents:
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Introduction.............................................................................................................. 4
Materials and methods.............................................................................................. 5
Material examined..................................................................................................... 5
Data resources..................................................................................................... 7
Taxonomic research in Blattodea and Arenivaga......................................................... 7
Taxonomic research in Blattodea......................................................................... 7
Taxonomic research in Arenivaga........................................................................ 8
Methods and techniques............................................................................................ 9
Dissection of genitalia......................................................................................... 9
Cleaning specimens........................................................................................... 10
Measurements................................................................................................... 10
Descriptions...................................................................................................... 11
Photographs and drawings................................................................................ 11
Distributions..................................................................................................... 11
Structural orientation, terminology and morphological features.............................. 12
Structural orientation and terminology............................................................. 12
Morphological features...................................................................................... 12
Classification..................................................................................................... 17
Taxonomic history................................................................................................... 17
Genus Arenivaga (Rehn 1903)........................................................................... 17
Species treatments............................................................................................. 20
Arenivaga adamsi sp. n................................................................................ 20
Arenivaga akanthikos sp. n........................................................................... 24
Arenivaga alichenas sp. n.............................................................................. 28
Arenivaga apacha (Saussure)........................................................................ 29
Arenivaga apaeninsula sp. n......................................................................... 40
Arenivaga aquila sp. n................................................................................. 41
Arenivaga belli sp. n..................................................................................... 47
Arenivaga bolliana (Saussure)...................................................................... 50
Arenivaga darwini sp. n............................................................................... 58
Arenivaga delicata sp. n............................................................................... 62
Arenivaga diaphana sp. n............................................................................. 63
Arenivaga dnopheros sp. n............................................................................ 69
Arenivaga erratica Caudell........................................................................... 72
Arenivaga estelleae sp. n............................................................................... 82
Arenivaga floridensis Caudell........................................................................ 86
Arenivaga florilega sp. n............................................................................... 90
Arenivaga gaiophanes sp. n........................................................................... 91
Arenivaga galeana sp. n................................................................................ 97
Arenivaga genitalis Caudell........................................................................ 100
Arenivaga grandiscanyonensis sp. n............................................................. 108
Arenivaga grata Hebard............................................................................. 109
Arenivaga gumperzae sp. n......................................................................... 116
Arenivaga gurneyi sp. n.............................................................................. 117
Arenivaga haringtoni sp. n......................................................................... 123
Arenivaga hebardi sp. n.............................................................................. 126
Arenivaga hopkinsorum sp. n...................................................................... 127
Arenivaga hypogaios sp. n........................................................................... 135
Arenivaga impensa sp. n............................................................................. 138
Arenivaga investigata Friauf & Edney........................................................ 142
Arenivaga mckittrickae sp. n....................................................................... 154
Arenivaga milleri sp. n............................................................................... 158
Arenivaga moctezuma sp. n........................................................................ 159
Arenivaga mortisvallisensis sp. n................................................................. 165
Arenivaga nalepae sp. n.............................................................................. 168
Arenivaga nicklei sp. n............................................................................... 172
Arenivaga nocturna sp. n............................................................................ 176
Arenivaga pagana sp. n.............................................................................. 177
Arenivaga paradoxa sp. n........................................................................... 182
Arenivaga pratchetti sp. n........................................................................... 186
Arenivaga pumila sp. n.............................................................................. 187
Arenivaga rehni Hebard............................................................................. 193
Arenivaga ricei sp. n................................................................................... 201
Arenivaga rothi sp. n.................................................................................. 205
Arenivaga sequoia sp. n.............................................................................. 208
Arenivaga tenax sp. n................................................................................. 213
Arenivaga tonkawa Hebard........................................................................ 217
Arenivaga trypheros sp. n............................................................................ 231
Arenivaga umbratilis sp. n.......................................................................... 234
Key to the males of Arenivaga (Rehn 1903)..................................................... 237
Discussion............................................................................................................. 252
Acknowledgments................................................................................................. 253
References............................................................................................................. 254
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