Currently viewing the category: "Eggs"
What's That Bug? does not endorse extermination

Monarch caterpillar egg (Danaus plexippus)
Location: Naperville, IL
June 21, 2011 8:25 pm
Dear Bugman~
I thought you might like to have these photos I took today of the first of our 2011 Monarch caterpillars. We live in the midst of a prairie preserve with a lot of common milkweed, and we keep a few plants in our front yard for the purpose of raising Monarchs each summer. The one on the right has just hatched and has turned around to begin eating its shell. My photos of it actually hatching were too blurry, as I was in a hurry. The one on the left hatched after I left it, but I will plenty of opportunities for better shots. Best regards.
Signature: Dori Eldridge

Hatchling Monarch Caterpillar

Hi Dori,
We are positively thrilled to receive your excellent images of a newly hatched Monarch Caterpillar and a sibling egg about to hatch.  This very nicely rounds out our Monarch Butterfly metamorphosis as we now have all stages of development, though several Caterpillar instars may be missing.  We do have a question about the anatomy of the milkweed.  It appears that buds are just sitting on a leaf, and that they are not properly connected to the plant.  Can you please explain if this was a result of gathering eggs from a different plant.

Hatchling Monarch Caterpillar


What's That Bug? does not endorse extermination

Teeny Hatchlings on Rose Leaf
Location: Philadelphia, PA
June 15, 2011 10:44 pm
Dear Bugman,
I found these little critters on the underside of a rose bush June 11, and they were actively hatching from their eggs. My thumb in the photo is a good point of reference for size. Any idea what they are?
Signature: ro

Brown Marmorated Stink Bug Hatchlings

Hi ro,
We just finished, minutes ago, another similar posting which we identified as Brown Marmorated Stink Bug Hatchlings.  You should read that posting for additional information and links.  We believe your newly hatched individuals will soon darken and here is an image on BugGuide that shows the pale coloration of hatchlings.  The Brown Marmorated Stink Bug is an invasive exotic species and in our opinion, you should quickly dispatch these hatchlings if you want to prevent an invasion of your garden and your home.

Thank you so much! I’m a new convert to What’s That Bug. I’m so excited that all the bug photos I’ve been taking in my Philadelphia gardens are going to go to good use now.
The work/play that you’re doing with this website is invaluable. Keep it up!
Peas, love, & stinkbugs;

What's That Bug? does not endorse extermination

newly hatched beetles (?) on rose bush
Location: Herndon, Virginia
June 15, 2011 7:09 pm
I was dead-heading one of my rose bushes & tossing the cut stems on the ground when I looked down & noticed this bunch of eggs in the process of hatching into orangish colored beetles on the underside of one of the leaves. They don’t look loke anything I’ve found in any ”beetle egg ID” type sites, & I’ve never seen them before. (I figured if these were on my roses, they were probably up to no good, so after I took these photos the branch got put out in the street for the birds to play with) Thanks!
Signature: Lois in Virginia

Hatchlings of the Brown Marmorated Stink Bug

Hi Lois,
You were luckless in your identification attempt because these are Stink Bug hatchlings, not beetles.  We are happy we took the time to properly identify the species, which is often difficult with hatchlings, because these are newly hatched Brown Marmorated Stink Bugs,
Halyomorpha halys.  We found a nearly identical photo on BugGuide.  You may be familiar with the adults that often seek shelter indoors with the approaching cold weather.  They are quite common in Maryland, probably the site of the original introduction of this exotic invasive species.  We have a special page on our site to alert our readership about invasive exotic species.  You may find additional information on BugGuide including:  “Elliptical eggs are laid in clusters, often on the underside of leaves. Five instars (nymphal stages) take about a week each; the nymphs typically being brightly colored with red and black.  In PA, the BMSB has only one generation a year, like in the northern part of its native range. However, in southern China up to five generations occur each year, and the same pattern can be expected as the bug spreads south (Hoebeke & Carter 2003, Hoffmann 1931). The adults mate in the spring about two weeks after emerging from diapause or the resting phase. The females soon begin laying egg masses (at ~ weekly intervals); a female lays about 400 eggs in her lifetime. In PA, the egg-laying was observed from June to September, so different instars can be present on the same plant. Eggs hatch after 4-5 days. Nymphs are solitary feeders, but occasionally aggregate between overlapping leaves or leaf folds (Bernon 2004). Adults are sexually mature two weeks after the final molt (Hoebeke & Carter 2003).”  The Brown Marmorated Stink Bug has already gotten a strong foothold on the east and west coasts, and we can expect it to soon spread to other parts of North America.  You should dispatch these hatchlings without mercy, though that one instance on insecticide will hardly curb the spread of this noxious invasive pest.  We are also including a photo of the adult Brown Marmorated Stink Bug with this posting.  The Brown Marmorated Stink Bug  was selected as our Bug of the Month for October 2010 and it was a very popular posting.


Brown Marmorated Stink Bugs

What's That Bug? does not endorse extermination

What’s this bug?
Location: Cincinnati, OH
May 13, 2011 3:11 pm
Back on October 24th, we came home and saw this bug laying eggs right by our front door. This week, the eggs hatched. I’m attaching pictures of both.
Signature: maddenmama

Wheel Bug Hatchlings

Dear maddenmama,
We are really impressed that you left this unknown egg mass to hatch.  These are beneficial Wheel Bug hatchlings.  Wheel Bugs are important predators that will help keep your garden free of many insects that are injurious to plants.  The hatchlings will soon disperse.  They will also lose their red coloration.  The image you provided of the female Wheel Bug depositing her eggs shows the coglike structure on the thorax which is the inspiration for the common name Wheel Bug.  They have been referred to as the Stegosaurus Bug by several of our readers.  Wheel Bugs are the largest Assassin Bugs in North America.  They are not aggressive toward humans or pets, but if they are carelessly handled, they might bite.  The bite is painful, but harmless.

Seven Months earlier: Wheel Bug lays eggs

What's That Bug? does not endorse extermination

bug ?
Location: south charlotte, nc
May 2, 2011 10:07 pm
i have find this set of eggs and babies on the leaf of honeysuckle and don’t what there are?
Signature: Rita

Stink Bug Hatchlings

Hi Rita,
These are immature Hemipterans, and they sure look like newly hatched Stink Bugs in the family Pentatomidae to us.  You can compare their appearance to examples on bugGuide, though we could not find an exact match.

What's That Bug? does not endorse extermination

Unkown bug eggs
Location: NW Georgia
May 1, 2011 5:41 pm
I found these eggs on my onions. It’s late spring here and I have no idea what kind of bugs will hatch from them. I was hoping you could help. Thank you.
Signature: LDMS

Leaf Footed Bug Eggs

Dear LDMS,
These are the eggs of a Hemipteran, and often exact species identification of eggs is difficult.  We believe these eggs belong to a Leaf Footed Bug in the family Coreidae based on this image posted to BugGuide.

What's That Bug? does not endorse extermination