Host an Event Volunteer Join Tickets

Your gift keeps resources like this database thriving!

Q. Who is Mr. Smarty Plants?

A: There are those who suspect Wildflower Center volunteers are the culpable and capable culprits. Yet, others think staff members play some, albeit small, role. You can torture us with your plant questions, but we will never reveal the Green Guru's secret identity.

Help us grow by giving to the Plant Database Fund or by becoming a member

Did you know you can access the Native Plant Information Network with your web-enabled smartphone?

Ask Mr. Smarty Plants

Ask Mr. Smarty Plants is a free service provided by the staff and volunteers at the Lady Bird Johnson Wildflower Center.

Search Smarty Plants
See a list of all Smarty Plants questions

Please forgive us, but Mr. Smarty Plants has been overwhelmed by a flood of mail and must take a break for awhile to catch up. We hope to be accepting new questions again soon. Thank you!

Need help with plant identification, visit the plant identification page.

 
rate this answer
Not Yet Rated

Wednesday - August 19, 2009

From: Crossville, TN
Region: Southeast
Topic: Butterfly Gardens
Title: Yellow butterfly in Tennessee
Answered by: Nan Hampton

QUESTION:

I live in Crossville Tenn and am seeing a butterfly that is yellow with a long hanging. What is it and what is it doing?

ANSWER:

Well, Mr. Smarty Plants knows a lot about native plants, but he is no expert on insects.  However, he can tell you that yellow butterflies in North America are in the Family Pierideae (whites and yellows) and are often called sulphurs.  There are lots of different species so there is no way I could tell you which of the sulphurs you saw.  Now, about the long hanging you saw—it could be the butterfly's proboscis, it's feeding structure that works sort of like a straw.  When the butterfly is not feeding, the proboscis is curled near the mouth.  You can see the proboscis curled and uncurled for feeding at this link.  Butterflies also have 6 legs that hang down and female butterflies use the ovipositor at the end of their long abdomen to lay eggs on host plants.  Other than these possibilities, I think I would need to see a photo to determine what the long hanging is and what the butterfly is doing.
 

More Butterfly Gardens Questions

Promoting Monarch Habitats in Texas
July 11, 2016 - My parents have a 6 acre pasture in East, TX with native milkweed in it. What are the best times of year to bush hog to promote more milkweeds & do you know of any grants to help manage land for monar...
view the full question and answer

Natives for wet soil in Cincinnati OH
March 21, 2014 - I live in Cincinnati and the soil in my back yard is wet (soggy) all year round. There are moss and grass growing in the yard. The area is shaded in the afternoon but receives sun earlier in the day. ...
view the full question and answer

Will Canada geese eat Asclepias tuberosa from Cape May Court, NJ
May 20, 2014 - Will Canada geese eat my butterfly milkweed (Asclepias tuberosa)? I know this plant is deer resistant. I really want to plant some on sandy bank near pond in my back yard, but I fear the geese will ...
view the full question and answer

Type of non-native parsley for swallowtails from Austin
September 02, 2012 - What is the best type of parsley for Yellow Swallowtails? Lost a caterpillar when it ran out of food from a parsley plant. I can't remember what kind of parsley. It would not feed on Rue, cilantro...
view the full question and answer

Is Passiflora 'Purple Haze' a host to Gulf Frittilary butterflies?
September 14, 2011 - Is the passion flower purple haze (pasionaria purple haze) a host plant to gulf frittilary butterflies as is the passiflora incarnata passion flower?
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.