Largest wingspan for a hymenopteran

The hymenopteran with the largest wingspan is the giant tarantula-hawk wasp Pepsis heros, native to much of South America. It has a black body and translucent bronze-coloured wings. The largest specimen on record is a female (females are much bigger than males) that was obtained in Peru's Yanachaga-Chemillén National Park and is now in a collection at the Universidad Nacional Mayor de San Marcos in Peru's capital city, Lima. Its wingspan is 121.5 mm (4.5 in). Gerardo Lamas of the Universidad Nacional Mayor de San Marcos measured the record female specimen, and in 2006 he communicated the details to Dr George Beccaloni at the Natural History Museum in London, UK. The forewing length is 57 mm and the distance between the wing bases is 7.5 mm. The curved body length of 62 mm is estimated from a straight length of 52 mm but "its abdomen is very curved so this is an underestimation", according to Dr Beccaloni.