Citlal Colotl, or the Scorpion Constellation, is conventionally associated by Mesoamerican scholars with the modern constellation Scorpius.
That association holds true in this work as well. However, the difference between this interpretation and the conventional one is that there are several more modern constellations included in the asterism.
A much larger scorpion is constructed with modern constellations not conventionally included by adding the following: Sagittarius, Corona Borealis, Serpens Caput & Cauda, Ophiuchus, Scutum, Aquila and Hercules. The result is an enormous super-constellation in the form of a scorpion.
As illustrated in the above image, the constellation Scorpius forms the tail and part of the back of the larger version of the scorpion constellation as proposed in this interpretation of Aztec astronomy.