We are excited to announce the availability of a document by Allen F. Sanborn and Polly K. Phillips titled Biogeography of the Cicadas (Hemiptera: Cicadidae) of North America, North of Mexico. This document features distribution maps for North American cicada species! This document is an excellent companion to The Cicadas (Hemiptera: Cicadoidea: Cicadidae) of North America North of Mexico by Allen F. Sanborn and Maxine S. Heath (link to that book).
Abstract: We describe and illustrate the biogeography of the cicadas inhabiting continental North America, north of Mexico. Species distributions were determined through our collecting efforts as well as label data from more than 110 institutional collections. The status of subspecies is discussed with respect to their distributions. As we have shown over limited geographic areas, the distribution of individual species is related to the habitat in which they are found. We discuss the biogeography of the genera with respect to their phylogenetic relationships. California is the state with the greatest alpha diversity (89 species, 46.6% of taxa) and unique species (35 species, 18.3% of taxa). Texas, Arizona, Colorado and Utah are the states with the next greatest alpha diversity with Texas, Arizona and Utah being next for unique species diversity. Maine, New Hampshire and Rhode Island are the states with the least amount of cicada diversity. Diversity is greatest in states and areas where there is a diversity of plant communities and habitats within these communities. Mountainous terrain also coincides with increases in diversity. Several regions of the focus area require additional collection efforts to fill in the distributions of several species.
Keywords: cicada; distribution; Diceroprocta; Tibicen; Okanagana; Okanagodes; Cacama; Magicicada; Platypedia; Cicadetta
Here’s a break in the Magicicada mania: a Diceroprocta vitripennis. This photo was taken by Cicada Mania regular Paul Krombholz in Jackson Mississippi just last week. Cicadas like Diceroprocta vitripennis are annual cicadas: they emerge each year in small numbers, and as you can see, they rely on camouflage for survival. Annual cicadas are also quite shy compared to the periodic Magicicadas — they have very different life strategies. American annual cicadas rely on stealth and cunning to survive while searching for a mate. Periodic cicadas rely on the fact that there are so many of them, that some will always survive to carry on the species.
Notes from Paul:
I am continuing this season to try to get pictures of all the cicadas in the
Jackson, Mississippi area. I just got a female specimen of Diceroprocta
vitripennis. I found it in low vegetation on a sand bar next to the Pearl
River. Thanks to John Davis and the collectors at the Mississippi Museum of
Science for the tip on where to look for them! From head to wing tips, it
is 38 mm, but the wings of this species are longer in relation to body
length than those of Tibicens. Body length of this vitripennis was only