\begin{tsttabular} [edgeline=on] {>{\centering}p{.25\columnwidth}|>{\centering}p{.25\columnwidth}|>{\hfil}p{.25\columnwidth}} \hline
 & Drones & Worker Bees \\ \hline
 & & \\ \hline
 & & \\ \hline
 & & \\ \hline
 & & \\ \hline
\end{tsttabular}