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| Bulletins, Circulars, Progress Reports | ||||
| Bulletin 441 Alabama Agricultural Experiment Station R. Dennis Rouse, Auburn University |
THE
LEAF BEETLES OF ALABAMA (Coleopterea:Chrysomelidae)
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| TABLE OF CONTENTS |
Introduction |
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| In the early days of American entomology the collecting of insect specimens and recording of natural history data from the Deep South were sporadic and sparse. Areas particularly lacking in this type of study were western Georgia, Alabama, and Mississippi. Working together, E. A. Schwarz and H. G. Hubbard collected beetles in the South. In the latter part of the 19th century they made many collecting trips to Florida in the interest of obtaining specimens for the Detroit Scientific Association, which they had founded (50). Mr. Schwarz also collected Chrysomelidae at Selma, Alabama (63), one of the first collections of this family from the State. Other collectors in the South at about the turn of the century, who collected beetles along with other insects, included F. Knab, H. S. Barber, and J. C. Bridwell. More recently the results of surveys of Chrysomelidae of several Southern States have been published: Florida (31), Georgia (57), South Carolina (67, 68), and Mississippi (49). These are primarily checklists and are not descriptive or analytic. Such a checklist-without keys or descriptions-was compiled for Alabama by Loding (75). Loding, an amateur naturalist, resided in Mobile and contributed more to the study of Alabama Coleoptera than anyone else. His catalogue listed 88 families, 1,041 genera, and 2,770 species and varieties, including 259 forms of 83 genera of Chrysomelidae. His collection is presently maintained at the University of Alabama, University, Alabama. Although Loding's contribution to coleopterology was remarkable, it nevertheless does not discourage further investigations of this kind for the State. Additional distribution records are direly needed for zoogeographic studies and economic entomology. A thorough knowledge of the native fauna is valuable in recognizing introduced species, which are the potentially more dangerous economic pests. Because the present work includes keys and descriptions, it is decidedly more useful than Loding's checklist. It also serves to identify a large percentage of the Chrysomelidae of the South eastern United States. Based on records by Kirk (67), 80.6 percent of the South Carolina species of Chrysomelidae are common to Alabama and South Carolina. Based on Fattig's (57) list for Georgia, 93.3 per cent of that state's species are common to Alabama and Georgia. Other than the publication on work by Park (82) on the pselaphid beetles of Alabama, this bulletin is the only taxonomic paper for an entire Alabama beetle family. |
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| COLLECTION AND PRESERVATION TECHNIQUES | Collecting of specimens by the senior author was begun in the spring of 1963 and continued through summer 1965. During this period trips were made to various locales throughout the State and samples taken from sites such as roadsides, state and national parks, county lakes, and national forests. Since the collecting localities covered all parts of the State and were often visited more than once, a fair representation of chrysomelid beetles from Alabama's various faunal zones is believed to have been obtained. The most frequently employed collecting techniques were beating and sweeping various types of vegetation. This was also done at night to obtain the nocturnal forms. Collections at lights and from light traps were also made, even though only a small percentage of chrysomelids are positively phototropic. Finally, larvae and adults of particular species were sought by scanning the vegetation of known preferred host plants. (The presence of beetles is frequently indicated by feeding damage to the plants.) The immatures of a few species were reared to adults in the laboratory, but larvae collected are not treated in this paper. Adults were usually killed in a cyanide bottle and then mounted on insect pins or points in the laboratory. Larvae were preserved in Hood's solution. |
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| ADDITIONAL SOURCES | A few specimens of Alabama Chrysomelidae were in the Auburn University Entomology Museum when the authors began their survey. These were identified and utilized for distributional and seasonal data, and as models for descriptions. Primary among other museum sources was the University of Alabama (UANH), which maintains the extensive Henry P. Loding collection of Coleoptera. Less numerous Alabama records were obtained from the F. R. Mason collection at the Academy of Natural Sciences of Philadelphia (ANSP), the Pennsylvania Department of Agriculture Insect Collection (PADA), and the Division of Insects, United States National Museum (USNM). The latter undoubtedly contains more examples than are recorded here. Records were also obtained from the literature. |
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| TAXONOMY |
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| SYSTEMATICS |
The family Chrysomelidae, along with the Cerambycidae and Bruchidae, has been placed by Crowson (46) in the Suborder Polyphaga, Series Cucujiformia, Superfamily Chrysomeloidea. The families of this superfamily share many characters, but members of the Chrysomelidae may be distinguished by their bilobed third tarsal segments (except in the subfamily Chrysomelinae where they are entire or nearly so); their relatively short antennae (usually less than two-thirds as long as the body), which are inserted on the front of the head; their entire or emarginate eyes (but when emarginate not surrounding the antennae); their general shape (convex oval or flattened); and their ecological habits (root or leaf-feeding). Key to the Alabama Subfamilies of Chrysomelidae 1. Head with vertex projecting strongly forward, mouth directed posteriorly
( Fig. 1 )….. 2 | |||
| SUMMARY |
From the results of a survey of literature, a review of museum materials and field collections throughout Alabama made between spring 1963 and summer 1965, a list of the known Chrysomelidae of Alabama has been compiled. Descriptions of and keys to these species and their supraspecific taxa are presented. Notes on the biology, ecology, seasonal and geographical distributions are included, as well as occasional remarks on taxonomy. The following original taxonomic changes are made: | |||
| ACKNOWLEDGMENT | Assistance toward the completion of this investigation came from several sources. Persons who have aided by either making or verifying identifications, loaning or otherwise facilitating examinations of specimens in their care, loaning of manuscripts or making gifts of reprints, and being of other general assistance include: Doris H. Blake, Arlington, Virginia; W. J. Brown, Canada Department of Agriculture; Oscar L. Cartwright, United States National Museum; Ralph Chermock, while at University of Alabama; Vernon M. Kirk, Brookings, South Dakota; Edward J. F. Marx, Merchantville, New Jersey; Milton W. Sanderson, Illinois Natural History Survey; George B. Sleesman, Pennsylvania Department of Agriculture; Ray F. Smith, University of California, Berkeley; George B. Vogt, United States Department of Agriculture; and John A. Wilcox, New York State Museum and Science Service. We are indeed grateful for their help. Study specimens have also been received both as personal gifts and donations to the Auburn University Entomology Museum. Most of these have been collections by graduate students. To these numerous friends go our sincere thanks for their special collecting efforts. We particularly desire to recognize the National Defense Education Act grant which supported the study. We are indebted to Miss Mary Lou Marsh for portions of the art work. | |||
| LITERATURE CITED | (1) Arnett, Ross H. Jr. The
Beetles of the United States (A Manual for Identification). Part VI Suborder
Polyphaga (Concl.) Series Cucujiformia (Concl.) Chrysomeloidea Curculionoidea,
pp. 851-1112. Washington, D. C.: The Catholic Univ. of Amer. Press. | |||
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