Close up photo of a wing
Unearthing the Evolutionary Origins of Insect Wings
A handful of new studies moves the needle toward a consensus on the long-disputed question of whether insect wings evolved from legs or from the body wall, but the devil is in the details.
ABOVE: © ISTOCK.COM, dmitry_7
Unearthing the Evolutionary Origins of Insect Wings
Unearthing the Evolutionary Origins of Insect Wings

A handful of new studies moves the needle toward a consensus on the long-disputed question of whether insect wings evolved from legs or from the body wall, but the devil is in the details.

A handful of new studies moves the needle toward a consensus on the long-disputed question of whether insect wings evolved from legs or from the body wall, but the devil is in the details.

ABOVE: © ISTOCK.COM, dmitry_7

crustacean

Unearthed: World’s Oldest Animal Sperm—And It’s Giant
Max Kozlov | Dec 1, 2020
The sperm, belonging to a tiny marine crustacean, dates back nearly 100 million years, making it the most ancient animal sperm found to date.
Image of the Day: Light Show
Carolyn Wilke | Feb 7, 2019
Sea fireflies spew a mucus with a chemical glow to lure mates and avoid being eaten.
Image of the Day: Clubbing
Kerry Grens | Oct 19, 2018
Mantis shrimps’ remarkably swift kicks come from springs built into their dactyl clubs.
Image of the Day: Swiss Army Crustacean
The Scientist Staff, The Scientist Staff | May 2, 2018
The tools researchers used to study how this amphipod’s limbs develop could help inform our understanding of cell lineages and fates.
Pinpointing the Origin of Marbled Crayfish Clones
Diana Kwon | May 1, 2018
Research suggests that the invasive, all-female Procambarus virginalis originated in a German aquarium back in the 1990s.
Image of the Day: A Shrimp and a Cockroach
The Scientist Staff, The Scientist Staff | Oct 2, 2017
In the mantis shrimp brain, scientists uncover mushroom bodies—learning and memory structures typically found in the brains of insects. 
Behavior Brief
Catherine Offord | Jun 13, 2016
A round-up of recent discoveries in behavior research
Behavior Brief
Amanda B. Keener | Jul 6, 2015
A round-up of recent discoveries in behavior research
The Mantis Shrimp’s UV View
Bob Grant | Jul 7, 2014
A crustacean’s eyes are tuned to ultraviolet frequencies with the help of a biological sunblock molecule.
Anxious Crayfish
Kerry Grens | Jun 16, 2014
A crustacean appears anxious after a stressful experience, but a drug can fix it, according to a new study.
Confirmed Venomous Crustacean
Abby Olena | Oct 22, 2013
Researchers show that a cave-dwelling crustacean may use venom to immobilize and digest its prey.
Do Crustaceans Feel Pain?
Kate Yandell | Aug 9, 2013
An animal behavior professor argues that crabs and lobsters respond to electrical shocks in a way that suggests discomfort.