This is the first report of Chauliognathus marginatus from Wisconsin. Beetles were collected at two Rock Co. sites in 1999 and 2001, and at a Grant Co. site in 2005 and 2006

Williams, Andrew H

English

ValpoScholar

The Great Lakes Entomologist 
Volume 39 
Numbers 1 & 2 - Spring/Summer 2006 Numbers 
1 & 2 - Spring/Summer 2006 
Article 10 
April 2006 
First Report of Chauliognathus Marginatus (Coleoptera: 
Cantharidae) From Wisconsin 
Andrew H. Williams 
University of Wisconsin 
Follow this and additional works at: https://scholar.valpo.edu/tgle 
 Part of the Entomology Commons 
Recommended Citation 
Williams, Andrew H. 2006. "First Report of Chauliognathus Marginatus (Coleoptera: Cantharidae) From 
Wisconsin," The Great Lakes Entomologist, vol 39 (1) 
Available at: https://scholar.valpo.edu/tgle/vol39/iss1/10 
This Peer-Review Article is brought to you for free and open access by the Department of Biology at ValpoScholar. 
It has been accepted for inclusion in The Great Lakes Entomologist by an authorized administrator of ValpoScholar. 
For more information, please contact a ValpoScholar staff member at scholar@valpo.edu. 
2006	 THE	GREAT	LAKES	ENTOMOLOGIST	 
FIRST	REPORT	OF	CHAULIOGNATHUS	MARGINATUS		
(COLEOPTERA:	CANTHARIDAE)	FROM	WISCONSIN
Andrew	H.	Williams	
ABSTRACT
 This is the first report of Chauliognathus marginatus from Wisconsin. 
Beetles were collected at two Rock Co. sites in 1999 and 2001, and at a Grant 
Co. site in 2005 and 2006. 
____________________
Chauliognathus marginatus (Fabricius) was collected in Wisconsin on 25 
June 1999, 10 miles north of the Illinois border in Rock County, where I found 
one beetle nectaring on flowers of Asclepias syriaca2  and a second on flowers 
of Napaea dioica a few yards away.  On 22 June 2001, Michele Price collected 
another beetle3  one mile north of Illinois in Rock Co.
I next found C. marginatus at Eagle Valley Nature Preserve on the Mis-
sissippi River in Grant Co.  This large property is 22-24 miles north of Illinois, 
and Iowa is visible across the river.  A single beetle was nectaring on flowers of 
A. syriaca on 14 July 2005.  In 2006, C. marginatus was found at Eagle Valley 
Nature Preserve several times, in different places.  One beetle was nectaring on 
flowers of A. syriaca on 3 July; a second was doing so on 10 July.  On 24 July, 
five were on flowers of Pycnanthemum tenuifolium, including a mating pair, 
and three were on flowers of Eryngium yuccifolium, including a mating pair. 
On 3 August, 15 beetles were found on flowers of E. yuccifolium, including two 
mating pairs.
This beetle has long been known to live in neighboring Illinois (Walsh 
1868) and Iowa (Wickham 1911).  To find individuals of this conspicuous insect 
does not mean the species has taken up residence here in Wisconsin.  However, 
to find numbers of individuals repeatedly at one site in two consecutive years, 
associating with each other and mating, indicates that C. marginatus has taken 
up residence here, at least temporarily.  
ACKNOWLEDGMENTS
 Kohler Trust for Preservation provided funding for my research at 
Kohler’s Eagle Valley Nature Preserve through a grant to Prairie Biotic Re-
search, Inc., a non-profit with the mission of fostering basic biotic research by 
individuals in U. S. prairies.  I am also grateful to D. K. Young of the University 
of Wisconsin Entomology Department for providing essential laboratory space in 
an atmosphere charged with the excitement of studying Wisconsin’s insects.
LITERATURE CITED
Gleason, H. A., and A., Cronquist.  1991.  Manual of vascular plants of northeastern United 
States and adjacent Canada. 2nd ed. N. Y. Botanical Garden, Bronx, NY.
Walsh, B. D.  1868.  A friend unmasked. Amer. Entomol. 1: 51-52.
Wickham, H. F.  1911.  A list of the Coleoptera of Iowa. Bull. Lab. Nat. Hist. State Univ. 
1Department of Entomology, University of Wisconsin, Madison, WI, 53706.
2Plant nomenclature herein follows Gleason and Cronquist (1991).
3The Price specimen is in the collection of Alistair Ramsdale; all others are deposited in 
the University of Wisconsin Insect Research Collection.
1
Williams: First Report of <i>Chauliognathus Marginatus</i> (Coleoptera: Can
Published by ValpoScholar, 2006


First Report of \u3ci\u3eChauliognathus Marginatus\u3c/i\u3e (Coleoptera: Cantharidae) From Wisconsin

Valparaiso University

The Great Lakes Entomologist Volume 39 Numbers 1 & 2 - Spring/Summer 2006 Numbers 1 & 2 - Spring/Summer 2006 Article 10 April 2006 First Report of Chauliognathus Marginatus (Coleoptera: Cantharidae) From Wisconsin Andrew H. Williams University of Wisconsin Follow this and additional works at: https://scholar.valpo.edu/tgle  Part of the Entomology Commons Recommended Citation Williams, Andrew H. 2006. "First Report of Chauliognathus Marginatus (Coleoptera: Cantharidae) From Wisconsin," The Great Lakes Entomologist, vol 39 (1) Available at: https://scholar.valpo.edu/tgle/vol39/iss1/10 This Peer-Review Article is brought to you for free and open access by the Department of Biology at ValpoScholar. It has been accepted for inclusion in The Great Lakes Entomologist by an authorized administrator of ValpoScholar. For more information, please contact a ValpoScholar staff member at scholar@valpo.edu. 2006	 THE	GREAT	LAKES	ENTOMOLOGIST	 FIRST	REPORT	OF	CHAULIOGNATHUS	MARGINATUS		(COLEOPTERA:	CANTHARIDAE)	FROM	WISCONSINAndrew	H.	Williams	ABSTRACT This is the first report of Chauliognathus marginatus from Wisconsin. Beetles were collected at two Rock Co. sites in 1999 and 2001, and at a Grant Co. site in 2005 and 2006. ____________________Chauliognathus marginatus (Fabricius) was collected in Wisconsin on 25 June 1999, 10 miles north of the Illinois border in Rock County, where I found one beetle nectaring on flowers of Asclepias syriaca2  and a second on flowers of Napaea dioica a few yards away.  On 22 June 2001, Michele Price collected another beetle3  one mile north of Illinois in Rock Co.I next found C. marginatus at Eagle Valley Nature Preserve on the Mis-sissippi River in Grant Co.  This large property is 22-24 miles north of Illinois, and Iowa is visible across the river.  A single beetle was nectaring on flowers of A. syriaca on 14 July 2005.  In 2006, C. marginatus was found at Eagle Valley Nature Preserve several times, in different places.  One beetle was nectaring on flowers of A. syriaca on 3 July; a second was doing so on 10 July.  On 24 July, five were on flowers of Pycnanthemum tenuifolium, including a mating pair, and three were on flowers of Eryngium yuccifolium, including a mating pair. On 3 August, 15 beetles were found on flowers of E. yuccifolium, including two mating pairs.This beetle has long been known to live in neighboring Illinois (Walsh 1868) and Iowa (Wickham 1911).  To find individuals of this conspicuous insect does not mean the species has taken up residence here in Wisconsin.  However, to find numbers of individuals repeatedly at one site in two consecutive years, associating with each other and mating, indicates that C. marginatus has taken up residence here, at least temporarily.  ACKNOWLEDGMENTS Kohler Trust for Preservation provided funding for my research at Kohler’s Eagle Valley Nature Preserve through a grant to Prairie Biotic Re-search, Inc., a non-profit with the mission of fostering basic biotic research by individuals in U. S. prairies.  I am also grateful to D. K. Young of the University of Wisconsin Entomology Department for providing essential laboratory space in an atmosphere charged with the excitement of studying Wisconsin’s insects.LITERATURE CITEDGleason, H. A., and A., Cronquist.  1991.  Manual of vascular plants of northeastern United States and adjacent Canada. 2nd ed. N. Y. Botanical Garden, Bronx, NY.Walsh, B. D.  1868.  A friend unmasked. Amer. Entomol. 1: 51-52.Wickham, H. F.  1911.  A list of the Coleoptera of Iowa. Bull. Lab. Nat. Hist. State Univ. 1Department of Entomology, University of Wisconsin, Madison, WI, 53706.2Plant nomenclature herein follows Gleason and Cronquist (1991).3The Price specimen is in the collection of Alistair Ramsdale; all others are deposited in the University of Wisconsin Insect Research Collection.1Williams: First Report of <i>Chauliognathus Marginatus</i> (Coleoptera: CanPublished by ValpoScholar, 2006

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First Report of \u3ci\u3eChauliognathus Marginatus\u3c/i\u3e (Coleoptera: Cantharidae) From Wisconsin

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