  Little Higgs models with $T$-parity provide a stable neutral particle $A_H$,
the lightest $T$-odd particle (LTP), which was recently proposed to explain the
cold dark matter of the Universe. In the coannihilation region of the LTP with
the Little Higgs partner of the light quark $Q_H$, we propose novel signatures
for its detection at hadronic colliders by searching for monojet and dijet plus
missing energy events due to the associated production of $Q_H A_H$ and direct
production of $Q_H \bar{Q}_H$, respectively. Using the most recent WMAP data,
we show that the coupling of $A_H$-$Q_H$-$q$ is tightly constrained in the
coannihilation region. This implies that the monojet signal is too small to be
discernible but the dijet plus missing energy signal is potentially measurable
at the LHC.
