I know that the YG links are dead, will replace them when a decent replacement is available. Till then, please use your own sources.

Weak spots:
H: Head (hit from front)
AL: Arm left
AR: Arm right
L: Legs
SL: Special left
SR: Special right
SB: Special back
Weak spot table and other useful stuff ^^
Lvl NM name (Race) Weak spot City/Area Drop #1 Drop #2
36 Barometz (Roseling) Ul'dah Crimson Tide (Polearm) -
36 Jackanapes (Opo) H, L Gridania Bow of Owls (Bow) -
36 Nest commander (Ant) H Ul'dah Nighthawk Visor (Head) -
36 Pyrausta (Puk) Ul'dah Howling Talons (H2H) -
36 Queen Bolete (Funguar) Gridania Eternal Shade (Body) -
36 Slippery Sykes (Slug) Limsa Thalassian Targe (Shield) -
42 Alux (Imp) H Gridania Kple Kple (Staff) -
42 Bardi (Wolf) H Ul'dah Divining Hat (Head) -
42 Bomb Baron (Bomb) Limsa Flametongue (Sword) -
42 Daddy Longlegs (Yarzon) Ul'dah Elmlord's Tusk (G.Axe) -
42 Downy Dunstan (Karakul) Coerthas Loyalist's Bliaud (Body) -
42 Gluttonous Gertrude (Dodo) H, L Limsa Shield of the Savage (Shield) -
42 Sirocco (Antelope) Gridania Taurus Staff (Staff) -
47 Cactuar Jack (Cactus) L Ul'dah Conquistador Elmo (Head) Fists of the Sixth Sun (H2H)
47 Old Sixarms (Crab) SB Limsa Shellsplitter (Polearm) Venerer's Bracers (Hands)
47 Phaia (Hog) H Gridania Penance (Belt) Boar's Bane (G.Axe)
47 Prince of Pestilence (Gnat) H Gridania Frostbite (Sword) Seer's Cowl (Body)
47 Spitfire (Spriggan) - (fast kill seems to proc Leggings) Coerthas Engineer's Leggings (Feet) Bloodcry (Staff)
47 Unknown Soldier (Ghost) Limsa Paladin's Trousers (Legs) Anathema (1H Staff)
49 Kokoroon (Qiqirn) H, AL, AR, L Ul'dah Kokoroon's Darkshell Mail (Body) Kokoroon's Nestpicker (Bow)
60 Dodore (Ahriman) H, SB (Tail) Mor Dhona Dodore Wing (Craft) -
60 Elder mosshorn (Aldgoat) H Ul'dah Mossy Horn (Craft) -
60 Haughtpox Bloatbelly (Goblin) AL, AR, H Gridania Broken Aeolian Scimitar (Craft) -
62 Uraeus (Basilisk) Coerthas Uraeus Skin (Craft) -
65 Great buffalo (Kujata) L, SL, SR Limsa Bloody Lance Head (Craft) Bloody Bardiche Head (Craft)
Table written by Niya Kouya @ Sargatanas, member of Moogleschubsers LS.
Drop data, weak spots etc. from various sources, including Lodestone, YG comments (no longer existant) and own observations.
Final Fantasy XIV is © Square Enix Co., Ltd.

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