PacSci Blog

Fresh Sheet – July 20, 2019

by | Jul 20, 2019

Tirumala septentrionis (Dark Blue Tiger)

Tirumala septentrionis (Dark Blue Tiger)

Danaus vulgaris (Blue Glassy Tiger)

Danaus vulgaris (Blue Glassy Tiger)

Among the eleven butterfly species we are receiving this week, there are two that closely resemble each other. They are Danaus vulgaris (Blue Glassy Tiger) and Tirumala septentrionis (Dark Blue Tiger). Both are in the Daniadae or milkweed butterfly subfamily of Nymphalidae, the brush-footed butterflies and both can be found in Southeast Asia.

The easiest way to tell them apart may be by their wingspan size. The Danaus vulgaris has a wingspan of 70-80 mm, whereas Tirumala septentrionis has a wingspan between 80-115 mm.

Be curious! Look for these two species in our Tropical Butterfly House and visit us soon.

Penang Butterfly Farm

5 – Catopsilia pyranthe (Mottled Emigrant)
90 – Catopsilia scylla (Orange Emigrant)
29 – Cethosia biblis (Red Lacewing)
90 – Cethosia cyane (Leopard Lacewing)
2 – Danaus vulgaris (Blue Glassy Tiger)
7 – Euploea phaenareta (Great Crow)
10 – Idea leuconoe (Paper Kite)
7 – Lexias dirtea (Archduke)
90 – Parthenos sylvia (The Clipper)
30 – Tirumala septentrionis (Dark Blue Tiger)
90 – Vindula dejone (The Cruiser)

Total = 450

“Fresh Sheet” is our weekly shipment report of pupae on display in the emerging window. Visit Pacific Science Center’s Tropical Butterfly House and meet our newest residents.These butterflies typically arrive as pupae on the Thursday or Friday before the Fresh Sheet is published. Some of these butterflies will start emerging the day they arrive or the next day, but other species may take a full week before they reach adulthood. After emerging, they may live for a week or even a few months! While we love sharing a variety of species with our guests, we cannot guarantee that any specific species will be flying on the day that you visit Pacific Science Center.If you are interested in photographing a specific butterfly and would like to be updated about when it is flying in the Tropical Butterfly House, please email with details and your contact information.

Adopt a Butterfly

Love the Tropical Butterfly House? Spread that love by adopting one of our beautiful winged creatures! Starting at just $50, your adoption will help care for the butterflies in the Tropical Butterfly House, and support of the hands-on science programming offered at Pacific Science Center. And, you’ll receive some exclusive benefits for your generosity.