Aiming to provide approximate rotational constants for millimeter Wave, spectroscopists to identify the corresponding species in Space, we have recorded the near infrared spectra of the methylene cation CH2+ and its deuterated isotopologues, CD2+ and CHD+, using a high resolution and high sensitivity spectrometer. Detection of CH2+ in space will shed light on interstellar chemistry as it is the intermediate between the abundant CH+ and yet to be observed CH3+, which is important in the formation of larger organic molecules. CH2+ and its deuterated isotopologues are also of special interest for theoretical studies because of their. unique intramolecular dynamics, i.e., the Renner-Teller interaction and quasi-linearity. This paper will discuss several new bands of CH2+, the (A) over tilde (0,5[11],0)(0) <-- <(X)over tilde>(0,0[0],0)(1) and (A) over tilde (0,4[11],0)(2) <-- <(X)over tilde>(0,0[0],0)(1) bands of CD2+, which have been identified and analyzed, and the candidate lines for the (A) over tilde (0,4[10],0)(1) <-- <(X)over tilde>(0,0[1],0)(0) band of CHD+, in comparison with the theoretical predictions by Bunker and colleagues.