Citrophilous Mealybug (Pseudococcus calceolariae)

Order: Homoptera (ho-MOP-ter-a) (Info)
Family: Pseudococcidae (soo-do-KOK-sid-ee) (Info)
Genus: Pseudococcus
Species: calceolariae


This bug has been reportedly found in the following regions:

Hot Springs National Park, Arkansas
Hesperia, California
San Diego, California
Evergreen, Colorado
Arcadia, Florida
Palm Bay, Florida
Port Orange, Florida
Titusville, Florida
Wichita, Kansas
Coushatta, Louisiana
Kenner, Louisiana
Framingham, Massachusetts
Las Vegas, Nevada
North Tonawanda, New York
Cleveland, Ohio
Canby, Oregon
Seneca, South Carolina
Summerville, South Carolina
Murfreesboro, Tennessee
Abilene, Texas
Denton, Texas
Dickinson, Texas
Georgetown, Texas
Houston, Texas (3 reports)
Rosenberg, Texas
Snyder, Texas
Sugar Land, Texas
Layton, Utah
Fredericksburg, Virginia
Richmond, Virginia
Woodbridge, Virginia
Show all

Members' Notes:


On Nov 14, 2009, AnalogDog from Mountlake Terrace, WA (Zone 8a) wrote:

Yecch! these are the bane of my succulent collection. I use regular spraying of isopropyl alcohol 50/50 mixed with water soaking the top and bottom of leaves, and allow it to soak the soil. I have been recently informed that soaking the pots (with plant) in warm soapy water helps to eradicate the root sucking bugs without radically disturbing the bugs.

Where alcohol is sprayed death of the bug is almost immediate. Eggs are laid in the soil, and not killed, so weekly spraying is recommended until no more are seen for awhile. If the plant does not recover quickly, root mealies may be the problem. Unpotting and removing/spraying or soaking with be necessary to prevent plant demise.


On Sep 30, 2009, Dianas_Dirt from Kenner, LA wrote:

These bugs are horrible and I've almost killed the plant that they inhabited trying to get rid of them. Remember spray the surrounding soil some of them fall or leap from the plant only to return and re populate it.


On Nov 16, 2008, plantaholic186 from Winnetka, IL wrote:

In my greenhouse, these monsters LOVE the following plants:

Sempervivum (Hens and Chicks)

All of these plants will withstand heavy pyrethin sprays.

The plants they ignore:

Opercullicarya (although that's waaay up high, away from all the other plants)


On Sep 20, 2007, SimbiDlo from Snyder, TX wrote:

I hate this bug with a passion! It spreads FAST! It completely devistated my Lemon Balm. I had a rather large sized lemon balm, about a foot and a half tall, two feet wide. I had to cut it all the way down to the stalk, because nothing else worked! I have been finding them on my okra as well, and my "queen Sophia" Marigolds, killed three of the 6 inch tall plants! They stay mostly on the underside of the leaves so they are hard to see. If you see one of them on ANY of your plants, kill it QUICKLY!


On Nov 10, 2006, waxedout from Tallahassee, FL (Zone 8b) wrote:

What a pest! Fortunately I've been able to save my afflicted succulents by consistent spraying with neem oil.


On Sep 11, 2006, MyHiraeth from Lisbon,
Portugal (Zone 10a) wrote:

This horrible little bug will concentrate around the base of young leaves in softwood trunks. The result is damage to the springs and sometimes to the trunk. I've had a jasmine bush in near death condition because they would conceal their "nests" anywhere less visible, and keep undermining the plant unless something is done. Soapy water, regular bug spray and radical pruning usually do the trick. Just don't give them slack!


On Sep 8, 2006, saladgirl from Las Vegas, NV (Zone 9a) wrote:

In 16 years in the same garden, this is the first time I have encountered this bug. I haven't seen any damage...yet, and am unfamiliar with WHAT there presence might mean. There aren't a lot of them, however, they have been found on several different plants.


On Sep 3, 2006, at1a5 from Canby, OR (Zone 8b) wrote:

There is tons to know about this pest but I don't claim to be an authority on them so I won't bore you all with my minimal knowledge.

I will share however, one tidbit of information that I've learned from dealing with this pest, and that is when ridding infestations from houseplants, be sure to check surrounding areas for "nests." I had one plant which I kept "de-bugging" but the little buggers kept coming back. Later I discovered many nests hiding under the lip of the pot. Sneaky little devils.