value bet river?

[ski]

Party Poker No-Limit Hold'em, $ BB (10 handed) internettexasholdem.com

BB ($178.60)
UTG ($197.90)
UTG+1 ($51.67)
UTG+2 ($54.25)
Hero ($184.75)
MP2 ($120.95)
MP3 ($71.95)
CO ($87.60)
Button ($132.98)
SB ($92.67)

Preflop: Hero is MP1 with A[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/diamond.gif[/img]. SB posts a blind of $1.
UTG calls $2, <font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises to $10</font>, <font color="#666666">6 folds</font>, UTG calls $8.

Flop: ($23) 8[img]/images/graemlins/heart.gif[/img], 4[img]/images/graemlins/diamond.gif[/img], 3[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
UTG checks, <font color="#CC3333">Hero bets $15</font>, <font color="#CC3333">UTG raises to $35.01</font>, Hero calls $20.01.

Turn: ($93.02) 2[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">UTG bets $40.32</font>, Hero calls $40.32.

River: ($173.66) 4[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
UTG checks hero???