Currently viewing the category: "Weevils"

thanks for helping me to identify the other residents of my home. fotograf this arthropods has become a hobby to me (there is always somthing new) . theone named “bico4” here is called “gorgojo” and this was about an inch long.
Daniel Vazques Abarca

Hi Daniel,
The “gorgojo” is a type of Weevil. These are beetles from the family Curculionidae. They are frequently plant pests. I am also going to forward your letter to our beetle expert Dan, who may have additional information for you. We did a google search for Gorgojo and found numerous sites in Spanish. The weevil was identified as Insectos plagas: GORGOJO – Otiorrynchus sulcatus. This site states: “Los adultos, que aparecen a finales de primavera, comen en los bordes de las hojas pero no tiene importancia en cuanto a da

I have a recurring problem with pantry weevils. Each summer I throw out any affected rice, grain etc and clean out the cupboards but the problem will not go away. What else can I do?

Kay, London

Dear Kay,
The problem with pantry weevils is that they are small, and also capable of flight, so that each time to eradicate the infestation, new weevils can arrive and begin the life cycle anew. According to Hogue "The appearance of these pests in a tightly sealed package of dried food is a source of wonder to housekeepers. Entry is commonly by way of minute imperfections in the seal, but some species may bore through paper and cardboard containers to get at the contents. In other cases, infestations occur when the foods are stored in bulk in railroad cars, warehouses, and at other stops along the processing line." You will greatly minimize the ravages of the weevil by continuing to dispose of old grains which will prevent a self-perpetuating population explosion within your pantry, but the problem will not go away permanently unless the weevils go away permanently by becoming extinct.

And a word from MOM:
Sorry to say, I heard that those peskiy little critters often come in as teensy undetectable eggs inside your bag of flour or dry pet food (generally in packages that do not have sealed plastic inner bags) and hatch in your
warm cabinets. So tell Kay to store her flour in the refrigerator or freezer until she needs it. Apparently, you can cook it at 130 degrees for half an hour to kill anything that might be in there, but personally, although I can live with eggs I can’t see, I can’t see baking with dead bugs that may have already hatched. I
started putting my flour in the refrigerator over 25 years ago and haven’t had a bug since.

Great advice, Mom! I must have learned it from you long ago, since I have a fridge full of flour. But why bother killing the bugs in the flour before you bake? Won’t the crawling critters die anyhow once they hit that hot oven? And how could anyone refuse a little extra protein in their chocolate chip cookies??

I live in a bi-level home, and have been there for 7 years now. All of a sudden this year I have a new bug aprox 3/16 long with 6 legs and 2 antenna, 1 on each side of what looks like an anteater’s snout. I have a coal stove in my finished basement so it is warm there. These bugs seem to be mostly on one of two white throw rugs in the middle of the floor, or can be found on the concrete floor next to any white dry wall. They appear to have a short life span, crawl only, no jumping, and so far have not been found upstairs. What are they and how do I get rid of them? Oh yeah. they are brown in color.
thank you
Bob Whitford

Dear Bob,
Based on your description, I suspect you may have a weevil infestation. Weevils are the world’s largest family of animals, numbering in excess of 35,000 members worldwide, so exact identification based on a verbal description is nearly impossible. They are small beetles with the front part of the head elongated into a snout or proboscis. Members of the family include pantry beetles which find their way into grain products, munching happily and unnoticed, and reproducing in vast quantities. Here is the frightening part. Hogue states that "several species act as intermediate hosts and vectors of the human tapeworms Hymenopepis nana and H. diminuta. People acquire infections by ingesting beetles containing the larval (or cysticercoid) stages of the tapeworm, which will often remain viable in infested corn meal and wheat flour that is undercooked."

Robert responds:
You are correct, I was just visited today by our local exterminator. In the fall I put a bag of scratch grain that was given to me in my
basement so I could feed the spring turkeys. Well, looks like I get to see more than just turkeys around my house. His solution is to remove the grain & clean the area. This should stop the bug problem. Do you agree?

To which "What’s That Bug?" replies:
Congratulations Robert.
Cleaning out the grain in the basement is a good start. Hopefully, the pantry beetles did not get as far as the kitchen. They can foul even the best homemaker’s flour and other grain products. I have even found weevils in the dry mushrooms.
Have a nice day.