Currently viewing the category: "Weevils"

mating acorn weevils
HI BUGMAN!! I love your site!! It’s helped me identify lots of insects and has only helped my already huge interest in bugs. I have been having a problem with acorn weevils on my pin oak tree in Columbia MO… so they pose a threat to the tree? attached is a picture of two of them mating. THANKS!!
Andrew M.

Hi Andrew,
Thanks for sending a new species to us. The Acorn Weevil, Curculio glandium, can be quickly distinguished by the elongated snout or rostrum. We have located information that the Acorn Weevil does not pose a threat to the oak tree itself as both adults and larvae feed on the acorns. We apologize for not having the ability to respond to every letter you have written to us, and if there is anything that is either new to our site or a pressing matter for you, please resend those letters and images.

A weevil looking beetle with horny back
Hi. I looked through all your beetles and I think this one must be a "gorgojo" a type of Weevil from the family Curculionidae. I found it on my wheelie bin in the back yard. Atherton, Queensland, Australia, in the middle of the day. If you ever have time, can you let me know for sure. I see them from time to time. Pretty darn cute ( but I still don’t want to touch it!) Thanks, much appreciated,

Hi Susan,
This is a Weevil, but we do not know the species.

Outreach on Pests
Hi Bugman,
My name is Virginia Lopez ,Entomologist with California Department of Food and Agriculture(Pest Detection). I wanted to make you aware of a pest we intercepted in landscape material in San Diego, Long Beach and Orange. We are in eradication mode to rid the State of this invader. If you could inform your vast Los Angeles readers of the pest that would contribute greatly to it staying localized and facilitate eradication. Should you have pest pic emailed to you please have the California resident contact us. EARLY DETECTION IS THE KEY TO ERADICATION Attached is postcard mailed out to residences in and around the impacted cities. “The Diaprepes Root Weevil, Diaprepes abbreviatus, is a large, colorful insect native to the Caribbean. This weevil was accidentally introduced into Florida in the 1960s and caused extensive damage. It has been intercepted in shipments of plants to California. this weevil feeds on about 270 different plants including citrus, hibiscus, avocado, peach, guava, loquat, holly and oak. This pest is a significant threat to both urban and agricultural trees and plants. Adult weevils feed on the leaves of plants and their larvae move under-ground to feed on plant rooots. If you see the adult weevils or damage to plants that looks like the photos above, please contact the California Department of Food and Agruculture’s Exotic Pest Hotline at 1-800-491-1899.” To find out more on invading pests we are detection,, I have attached our website.
Thank you Bugman for any help you can provide for us.
Virginia Lopez
California Department of Food & Agriculture
Pest Detection/Emergency Projects
562 928-4562

Hi Virginia,
Thanks for the warning. We will keep your letter at the top of our homepage and we have reproduced some of the content from the postcard as well.

Black Beetle with Red Markings – ???
Dear Bugman:
I found this large (1.25 inches long) beetle floating in my Florida swimming pool this morning. I dipped him out with the pool net and laid the net down in the shade of some hibiscus bushes, measured and photographed the beetle. I left it there in the shady quiet to dry off, and eventually it must have departed. Can you tell me what it was?
Thank you,
Ann K.

Hi Ann,
This is a Palmetto Weevil, Rhynchophorus cruentatus.

Update from David Gracer, edible insect specialist (05/25/2006)
Palmetto Weevil: Rhynchophorus cruentatus
Rhynchophorus weevils: the ULTIMATE in yummy! This is the North American representative of possibly the most treasured edible insect of all. The larvae of R. cruentatus and R. palmarum were/are eaten throughout much of the New World, and other members of the genus are among the most sought-after foods in some societies. R. ferrugineus, better known as the Sago Grub, is eaten in Papua New Guinea; some people have gone there just to eat them. Yet this species, which feed on palm trees, has become introduced into many countries, from the Middle East (where it’s a serious threat to culturally-important date palms) all the way west to Spain. Most Americans, though, would probably feel that the grubs look totally disgusting. There’s a picture of them on my website. Due to its status as a premium delicacy, there is a slightly larger body of lore for these weevil grubs than for most other edible insects. Here is a report from the Caribbean: Provancher (1890) visited several Caribbean islands in 1888 and related the following (as translated by Starr [1993]): While in Port of Spain, Trinidad in May 1888, we stopped by Laventille [now a poor section of the city] one morning in the company of some Dominican fathers.. Walking along a street that skirts the hill, we came upon a black man splitting a wooden log with his hatchet, and near him a little girl holding a teacup. ‘This man is looking for palm grubs,’ one of the fathers told us. ‘Let us stop a moment if you would like to see them.’ On approaching, we saw that the log was in fact the trunk of a palm, probably a coconut palm. It was about four or five feet long and in an advanced state of decomposition. Every blow of the hatchet exposed seven or eight big, very plump grubs, each about three inches long, which the little girl was eagerly gathering into the cup. These larvae were truly handsome animals, of a lovely yellowish white and with six dainty feet near the front end. ‘And do the black people eat these grubs?’ we asked. ‘Oh no,’ we were told, ‘this food is too precious for the poor. They collect them for sale to the English gourmets, who relish them.’ ‘What price do they fetch?’ ‘A small cup such as you see there usually goes for a ‘gourde’, $1.’ We estimated that this trunk would furnish at least two such cups of grubs. These grubs are . . . [the larva of a curculionid beetle, Calandra palmarum Fabr.]. Of course “Calandra” is nothing more than an archaic classification name for Rhynchophorus. As you might imagine, the amount of money discussed would represent a great sum to those doing the gathering. This account is powerful evidence for the argument that Europeans (and, therefore, even Americans) can quickly learn to love eating insects. One of these days I will have the opportunity to eat Rhynchophorus grubs.

Here are some pictures of another critter from San Juan, Colon, Panama. He was found at night attracted to a porch light. What is he? He has orange “hair” around his “nose” and the underside of his “head”.

Hi Lisa,
Sorry, we forgot about your letter. Yes, this is a Weevil, but we do not know the species. Sadly, there is not a comprehensive guide to Panamanian, or even Central American insects. Perhaps you should compile one.

Update (06/10/2006)
An answer to Panama Weevil of May 2
We were recently on a trip to Costa Rica and took pictures of that same bug, it was very large – something like 4 inches long. I was able to identify the weevil through Bug Nation as a Rhina oblita – Cuban Weevil. Apparently there was a Cuban stamp with this critter. You can cut and paste the following link in your browser for a look-see:
Diane from St. Petersburg, Florida

Hi there bugman
I found this bug on christmas day last year (and what a great present it was!) in my garden in Sydney, Australia. I’ve been puzzling over him for a while, and still have no clue. I was guessing some sort of weevil? I’d really love to know for sure, since I plan to get my little buddy as part of a bug tattoo sleeve I’m planning. In one of the photos, I’m hoping you’ll be able to see the lovely iridescent spots he’s got going on. I absolutely love your site, it’s been very useful to me, not just for general bug wonderings, but for drawing this entire tattoo! Hopefully you can help me out, I’d really appreciate it.

Hi Ashleigh,
There is quite a bit of online information on your Botany Bay Weevil, Chrysolopus spectabilis. When you get that tattoo, we would love some photos of it.