Overview
The European Mantisfly (Mantispa styriaca), also commonly referred to as the mantid lacewing, is one of Europe’s most astonishing examples of convergent evolution. Despite bearing an uncanny physical resemblance to a praying mantis, it belongs to the distinct order Neuroptera (net-winged insects), alongside lacewings and antlions. Inhabiting sunny, thermophilic oak scrub and open grasslands across southern Europe, this fascinating predatory insect combines the lightning-quick raptorial forelegs of a mantis with the delicate, iridescent wings of a lacewing.
Biology and Physical Characteristics
Mantispa styriaca features an elongated, tubular prothorax that elevates its triangular, highly mobile head. Its compound eyes are large, hemispherical, and shimmer with brilliant metallic golden and iridescent bronze hues. The forelegs are profoundly modified into heavily spined, raptorial grasping appendages powered by enlarged femoral muscles, capable of snatching flying insects in fractions of a second. Its four membranous wings are entirely transparent, laced with delicate, complex reticulated venation, and marked by a distinct reddish-brown pterostigma along each leading wing margin.
Behavior and Ecology
Adult mantisflies are diurnal ambush predators that perch motionless among sunlit foliage, waiting for unsuspecting flies, leafhoppers, and small moths to venture within striking range. Its reproductive life cycle is extraordinarily sophisticated, exhibiting hypermetamorphosis. Adult females deposit hundreds of minute, stalked eggs on tree bark. Upon hatching, the active first-instar campodeiform larvae embark on a hunt for wandering wolf spiders (Lycosidae). The larva boards a passing spider, hitches a ride until the female produces an egg sac, and slips inside to feed upon the developing spider eggs before pupating.
Conservation and Human Impact
Mantispa styriaca is categorized as Least Concern globally due to its vast distribution across southern and central Europe. However, localized northern populations in Central Europe are patchy and vulnerable to habitat loss resulting from intense agricultural expansion, pesticide drift, and the encroachment of dense forest canopy over open, sun-baked grasslands. Conserving traditional silvopastoral oak woodlands and open hedgerow corridors ensures stable spider host populations necessary for its larval development.
Interesting Factoid
The European Mantisfly looks exactly like a miniature praying mantis with fairy wings, but its babies are secret hitchhikers: newborn larvae climb onto wandering wolf spiders and ride them like horses until the spider lays eggs for the larva to eat!
Last updated: October 2026