Skip to content
Trending Topics: Research News•The Entomology Profession•Amazing Insects•Science Policy and Outreach

Nipaecoccus viridis KOH color test, other life stages

Published at 2000 × 1270 in Green Light: New ID Test Ready for Invasive Mealybug Pest

Figure on a white background with three rows. At left, top row is labeled "Eggs," middle row "1st Instar," and bottom row "Adult Male." Top row shows a small circular dish at left with small black dots inside, followed by a black arrow pointing to the right labled "10% KOH," followed by the same dish with light greenish liquid. Two black lines meet at one of the dots in the dish and extend outward to the right and end at a large dark green box labled "Green coloration." Middle row shows a small, light brown mealybug at left, followed by a black arrow pointing to the right labled "10% KOH," followed by the same mealybug now darker in color. Two black lines meet at the middle of the mealybug and extend outward to the right and end at a large dark green box labled "Green coloration." Bottom row shows a small, adult mealybug with wings at left, followed by a black arrow pointing to the right labled "10% KOH," followed by the same mealybug now darker in color. Two black lines meet at the middle of the mealybug and extend outward to the right and end at a large dark green box labled "Green coloration."

In a color test of eggs, immatures, and adult males of Nipaecoccus viridis in 10 percent potassium hydroxide (KOH), their hemolymph also turns green. (Image originally published in Ahmed and Deeter, 2022, Journal of Applied Entomology)

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.