Walter Federle

Regulation of pitcher fluid volume and properties in six ecologically distinct Bornean Nepenthes species

This study examines fluid regulation in six Bornean Nepenthes species, finding that regulation varies with ecological factors and trapping mechanisms.

Adult diet strongly affects cuticle thickness and its injury resistance in the insect Narnia femorata (Hemiptera: Coreidae)

This study shows that adult diet significantly affects cuticle thickness and injury resistance in Narnia femorata, with high-quality diets leading to thicker, more resilient cuticles.

Arms race of physical defences: Hooked trichomes of Macaranga ant-plants kill lycaenid caterpillars, but one specialist has a counter-defence

The paper shows that hooked trichomes on Macaranga trees defend against most Arhopala caterpillars, but one species, A. amphimuta, can bypass this defense, indicating an evolutionary arms race between plants and herbivores.

Caterpillar counter-adaptations to hooked trichomes: does the coevolutionary arms race continue?

This study examines how Heliconiini caterpillars adapt to hooked trichomes on Passiflora adenopoda leaves, finding that some species have thicker, more puncture-resistant cuticles and post-ingestive adaptations.