I collected, in northeastern Colorado, a very large (ca. 1 inch) species of robber fly (family Asilidae ).  
( I ( ( ( ( ( collected , ) ( in ( northeastern Colorado ) ) ) , ) ( ( a ( ( ( very large ) ( -LRB- ( ( ca. ( 1 inch ) ) -RRB- ) ) ) species ) ) ( of ( ( robber fly ) ( -LRB- ( ( family Asilidae ) -RRB- ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP I)) (VP (VBD collected) (, ,) (PP (IN in) (NP (JJ northeastern) (NNP Colorado))) (, ,) (NP (NP (DT a) (ADJP (ADJP (RB very) (JJ large)) (PRN (-LRB- -LRB-) (NP (NP (NN ca.)) (NP (CD 1) (NN inch))) (-RRB- -RRB-))) (NN species)) (PP (IN of) (NP (NP (NN robber) (NN fly)) (PRN (-LRB- -LRB-) (NP (NN family) (NN Asilidae)) (-RRB- -RRB-)))))) (. .)))
Robber flies are only a centimeter in length. 
( ( Robber flies ) ( ( ( are only ) ( ( a centimeter ) ( in length ) ) ) . ) )
(ROOT (S (NP (NNP Robber) (NNS flies)) (VP (VBP are) (ADVP (RB only)) (NP (NP (DT a) (NN centimeter)) (PP (IN in) (NP (NN length))))) (. .)))