"The above images are of the original type specimen of Strecker's hybrid "rubidus" from the Field Museum of Natural History (FMNH) in Chicago. The type specimen fixes the phenotype associated with Strecker's published name(1878). Although this name has no official standing according to the rules of the International Committee of Zoological Nomeclature (ICZN), this is the essence of "rubidus."
I am convinced that Strecker is the sole author of the name and his single specimen from Reading, PA, is the type. Note the "rubidus" type has no white banding on dorsal or ventral forewing, leaving no doubt whatsoever this is a Red-Spotted Purple x Viceroy hybrid. Thanks to Dr. Margaret Thayer and James Boone of FMNH for supplying photos from the Strecker Collection."
.....David Wright
COMPARE THE ABOVE IMAGES TO MY PHOTOS OF THE RUBIDUS BUTTERFLY BELOW TAKEN IN MY YARD IN ADAMS COUNTY, PA, SEPTEMBER 05, 2005.
CLICK ON PHOTOS AND SCROLL DOWN FOR TEXT DESCRIBING THE SIGNIFICANCE OF THIS FIND.
The "rubidus" hybrids (Limenitis archippus X L. arthemis astyanax) may not be nearly as rare as has been previously thought. During the flight season of 2010, I photographed four (4) different rubidus specimens in southeast Missouri at four separate locations. Photographs of these specimens have been examined and confirmed by Dr. Bob Platt, U. of Maryland Emeritus, and Mr. Phil Koenig, BOMANA Missouri Representative. Highly fragmented, juxtaposed habitats and anomalous heat and drought enhanced interspecific encounters and breeding during August through October of 2010.
J.D. Vaughn, Natural Scientist
Dexter, MO