how Kishimoto made Deidara:
Art is a Bang: This is a quote from Taro Okamoto one of the greatest Japanese Artists EVER.
He was famous for his modern defying designs which got an enormous amount of attention even today.
Kishi even placed Deidara's mud bombs on taro's designs.
Also Taro's most famous piece of art (Suntower/Pagoda)is the status in deidara justsu
Deidara activates his bombs with Chakra transforming them from small figures into bigger moving clay.
His activation is just like Taro's work.
A small sculpture later transformed into something big.
The symbolism of the sun tower is represented when Deidara drops his speciality--a bright light shines over Sunagakure no Sato.
Deidara's name:
Deidara is actually an Animal's name.
Covered later.
Deidara is derived from Deidarabocchi the story of a Giant that changed/created/did whatever to mountains.
When designing its english counterpart you can all it a Titan.
"The Titans also known as the elder gods ruled the earth before the Olympians overthrew them.The ruler of the Titans was Cronus who was dethroned by Zeus.Most of the Titans fought with Cronus against Zeus but were punished b being banished to Tartarus.During their rule the Titans were associated with many planets"
Deidarabocchi relates strongly to Greece's giants Branch of Titans god Family, to an extent of bringing many similarities.
Titans' symbolisms means "Prominent Figure".Where does that fit?
apparently aside from the Giant legend for Dedei to suddenly appear, capture gaara without his death while destroying Suna made him VERY prominent indeed.
There is more though.
Its said the Titans were the Child of Uranus (Heaven God) with Gaea (Earth Goddess)
Similarity: Deidara's clay (symbolizing earth) and crafted birds used for aerial battling (symbolizing heaven).
Deidara's Jutsu etc. lead to an Animal:
People thought Akatsuki nams refer to Animals but when Dei and Zetsu came that was over.
Kisame=Shark Itachi=Weasel Sasori=Scorpion
Deidara's name refers to an Animal as well though to an prehistoric bird over 250cm tall that competed with other Animals as one of the best predators in South America.
The name is Titanis more referring to the Titans.
Deidara has a Jutsu which can be compared to a Chocobo.
A Titanis cant fly but it had very powerful legs and a strong beak.(Referrance to Gaara's capture)
Deidaras name and his little spider coincidence
Strangely enough the name of the mini Clay spiders would be:
Dai(Big)+Tarantula (In Katakana) usually abbreviated in Daitara which leads to Daidara and finally to Deidara.