From Crochet at About.com
The Butterfly Chart Series

The chart is also suitable for cross stitch and adaptable to other needlecrafts such as beadwork, needlepoint and duplicate stitch on a knitted background.

This page is to make it easier for those of you who wish to print out the pattern without printing the rest of the feature.
If you wish to print the graph only, go here.

Shining Blue Nymph, Blue Banded Nymph
also known as Cynandra Opis

Materials
Worsted weight acrylic yarn: 1 oz. white, 1 oz. black,
1/2 oz. medium bright blue
optional metallic blue thread

Size G crochet hook
Guage: 4 stitches = 1 inch, 4 rows = 1 inch
Apprx. size of each finished square = 10 inches

Note: At the end of each row, you will chain 1, to turn.

Directions
With white yarn, chain 41.
Row 1: sc in 2nd ch from hook, sc in ea ch across.(40 sc)
Rows 2 - 4: sc in ea st across.
Row 5: Begin chart at first row on the chart. (plain row)
Rows 6 - 37: Continue to follow chart.
After completing all rows on the chart:
Rows 38 - 40: With white yarn, sc in ea st across.
End off.

Finishing
Using a straight stitch, with black yarn or embroidery floss,
embroider antennae as indicated in blue on the chart.

Pattern copyright © 1997 Sandi Marshall.
Free for your own personal use only.
Pattern is not to be sold or redistributed in any form.
All rights reserved worldwide.

The Shining Blue Nymph male butterfly has iridescent blue bands
on his wings. You may wish to hold a metallic blue thread together with the blue yarn as you crochet the blue bands in the pattern, to mimic an iridescent effect for this butterfly.

The Weekly Feature which describes this pattern and this butterfly, 

is at http://crochet.about.com/library/weekly/aa051797.htm

[Previous Features]   

[Crochet Homepage: http://crochet.about.com]