Brain-evolution
Guides
Cephalotes varians
Northern Caribbean Turtle Ant, turtle ant
Cephalotes varians is a strongly polyphenic turtle ant with three distinct female castes: small-bodied minor workers, larger phragmotic soldiers with shield-shaped heads used as living doors to block nest entrances, and reproductive gynes. The species exhibits gliding behavior, steering falls from trees using aerodynamic control. Native to the Neotropical region, it has been documented in the Florida Keys and listed as adventive in North America. Brain structure differs markedly among castes, with minor workers possessing disproportionately larger mushroom bodies associated with learning and memory, while soldiers and gynes have enlarged optic lobes.
Trichogramma
Trichogramma wasps, egg parasitoid wasps
Trichogramma is a genus of minute polyphagous wasps that are endoparasitoids of insect eggs. With over 200 species worldwide, it is one of approximately 80 genera in the family Trichogrammatidae. These wasps are among the most extensively studied and widely used biological control agents globally, with more than a thousand published papers on their biology and applications. Trichogramma species have also gained attention in neuroscience research due to their extremely small brain size—fewer than 10,000 neurons—while still exhibiting complex behaviors.
biological-controlegg-parasitoidintegrated-pest-managementneuroscience-modelWolbachiamass-rearingagricultural-pest-managementChalcidoideaTrichogrammatidaeaugmentative-biological-controlinundative-releasesustainable-agriculturerice-pest-managementcotton-pest-managementorchard-pest-managementforest-pest-managementparthenogenesischemosensory-biologyminiaturizationbrain-evolution