From the monthly archives: "September 2012"

Subject: Old Bug Illustration
Location: Unknown
September 26, 2012 4:58 am
It’s an old illustration by this gentleman named E.A. Seguy but its name is no where to be found!
Please help! Thanks so much!
Signature: Wai, from Singapore

Drawing of a Longhorned Borer Beetle

Dear Wai,
This drawing represents a Longhorned Borer Beetle in the family Cerambycidae.  We cannot provide the species without a location, though an expert in the family might be able to provide more specifics.  Pure Green Magazine has this to say about E. A. Seguy:  “Rather than classify species, the illustrator E. A. Seguy sought to celebrate selected exotic creatures in which he found artistic inspiration. Imaginatively employing floral and zoological motifs, Seguy’s early designs are wonderful examples of the art nouveau style, which swept through Europe in the decades around the turn of the century.” reports:  “Numerous artists and designers throughout history have drawn inspiration for their creations directly from the unparalleled diversity and beauty present in nature. E.A. Seguy was one such designer who was prolific from the turn of the century through the 1930′s. He produced eleven albums of illustrations and patterns of which Papillons and Insectes were dedicated to insect subjects. E.A. Seguy was a masterful decorative artist who spanned the art eras of Art Nouveau through Art Deco. His graphic technique was achieved through hand coloring prints through numerous plate stencils.”

Thank you so much for your response! Much appreciated!
have a great day,

Subject: South Africa
Location: Johannesburg, South Africa
September 25, 2012 2:36 pm
Hello Daniel
I have tried to Google and find out what this one is. Bu with little success. A friend told me she thinks it’s a horsefly. I Google orange horsefly but did not find anything like this. Although it does look a lot like some of them. Is it just a different type of horsefly?
Sorry about the little pic.. once again. Can only get so close with my mobile:-)
Signature: rob

Possibly Longlegged Fly

Hi Rob,
We believe this might be a Longlegged Fly in the family Dolichopodidae.  It is not a Horse Fly.  According to Bugguide which covers only North American species, Longlegged Flies:  “vary in appearance and biology. Adults are medium to small slender flies normally with green, blue or copper metallic colored bodies and long legs. Their wings are clear or marked with darker areas towards the wing tips. Wing venation is characteristic.”

Subject: Moths
Location: Misiones, Argentina
September 25, 2012 8:13 pm
I found these two lovely Giant Silk Moths in Missiones, Argentina, and Sao Paulo state, Brazil,respectively, this past August. Could you tell me what they are? Thanks.
Signature: James Colborn

Giant Silkmoth: Arsenura paraorbignyana

Hi James,
We believe we have correctly identified your second moth as
Arsenura orbignyana.  Here are some images from the Fauna of Paraguay website for comparison.

Bill Oehlke makes a correction
Hi Daniel,
In 2010 Brechlin and Meister put forward a new name for the moths previously designated as Arsenura orbignyana from Misiones, Argentina.
They appear very similar to Arsenura orbignyana, but DNA analysis indicates they are a different species, and images of larvae also seem different. The moth in question, if from Misiones, Argentina,
would be Arsenura paraorbignyana which is reported from Misiones, Argentina and from Paraguay.
Brechlin and Meister also removed Arsenura angulatus  (Minas Gerais, Brazil) from synonymity with Arsenura orbignyana which it  now seems is a Bolivian species.
A forth very similar species, Arsenura xanthopus, flies in Paraguay and Southeastern Brazil. It has yellow legs, while legs of the other three similar species are dark brown. Xanthopus also  has a slightly produced forewing apex followed by a hollowed out area below the apex, while the other three species lack the produced forewing apex and have slightly convex outer margins.
We can definitely rule out xanthopus because of wing shape, and, based on the relatively wide and very dark intramural pm band of orbignyana and its location, it can also be ruled out.
Paraorbignyana and angulatus are very similar, and I would not want to rule either of them out as possibilities, but if the stated location is correct as Misiones, then paraorbignyana is most likely correct.
I am also looking at larger images of spread moths and am trying to compare them to the smaller image in question of a live moth. I do note the angulation of the forewing cell marks does seem a better match for
Paraorbignyana. Based on all of the above, I think it is paraorbignyana, but if James writes back and indicates this moth is from Brazil it would almost be a toss up between paraorbignyana and angulatus.
Bill Oehlke

Thanks Bill,
There was some confusion in the original submission, because James attached two files of two different Giant Silkmoths that were found in two different locations.  He has since clarified that the moth you identified as
Rhescyntis pseudomartii, was photographed in Sao Paolo, Brazil, so we can deduce that this individual is from Misiones, Argentina.

Subject: Moths
Location: Sao Paulo, Brazil
September 25, 2012 8:13 pm
I found these two lovely Giant Silk Moths in Missiones, Argentina, and Sao Paulo state, Brazil,respectively, this past August. Could you tell me what they are? Thanks.
Signature: James Colborn

Giant Silkmoth: Rhescyntis pseudomartii

Hi James,
One of your moths is in the genus
Rhescyntis, but we are not certain of the species, and we cannot tell from your communication if it is from Argentina or Brazil.  There are inherent problems when multiple species are submitted in a single email.  Please clarify using the numbers on the file which is from Brazil and which is from Argentina.  We believe we have the Rhescyntis species as hailing from Brazil, since it is the second attached file, however, it is numbered chronologically earlier.  We have written to Bill Oehlke to see if he can provide a species name.  We will post your other submission separately.  Here is an image of a member of this genus, Rhescyntis hippodamia, on the Leo Prensa Libre website.

Wow! That was fast! Thanks, Daniel. The Rhescyntis species is indeed the one from Brazil. Sorry about the confusion.
Hope to hear back. Thanks again. You guys are awesome!

Bill Oehlke responds with an identification
Rhescyntis pseudomartii
Very nice. Do you have any other data?

Subject: is this a pantry beatle?
Location: NJ
September 24, 2012 8:56 pm
About a year ago i found an infestation in my kitchen which i think came from a box of newly opened pasta.
I threw out most of the items on my counter along with all the bugs i found.
Every once in a while i would come accross a bug which i would then dispose of.
Recently i have noticed that my pantry (especially the places with chocolate has become infested. The only thing that truly seems to kill the buggers is crushing them with my finger or putting them in the freezer.
Based on other things i read on this website i believe that these may be pantry beatles. Can you tell if this is the case
Can you recemmond what might kill them? i have tried raid but have had limited success. Would bleach work?
Signature: Ricki

Merchant Grain Beetles

Hi Ricki,
We believe these are Merchant Grain Beetles,
Oryzaephilus mercator, and while they are often found in stored foods in the pantry, they are actually classified with the Bark Beetles.  According to BugGuide:  “Adults and larvae feed primarily on cereal products, particularly oatmeal, bran, shelled sunflower seeds, rolled oats, and brown rice(3); usually associated with oilseeds and less with cereal grains and in most regions damages processed cereals, especially those with high oil content; also feeds on seed-borne fungi.”  The best control is keeping a close watch on stored foods and disposing of anything that appears to be infested.

Merchant Grain Beetles

Subject: Bee Fly?
Location: Plantation FL
September 24, 2012 12:41 pm
Photographed this bug in my south Florida back yard. It was really attracted to my basil plant. Is it a bee or a Fly?
Signature: Laura

Green Orchid Bee

Hi Laura,
We first reported on Green Orchid Bees,
Euglossa dilemma, in Florida in 2004, and that posting created quite a stir.  We have since learned that this Central American species has become well established in southern Florida.