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The zoology and biochemistry of xenomorphs from the Alien franchise

Luca Tonietti1–3 & Guillermo Climent Gargallo4 1Department of Science and Technology, University Parthenope, Naples, Italy. 2International PhD Programme/UNESCO Chair “Environment, Resources and…

Chelicerae are probably reminiscent of the efficient mouthparts seen in arachnids, horseshoe crabs, and sea spiders, unfolding as multifunctional tools that play a pivotal role in the xenomorph’s hunting and defensive strategies (Sharma, 2017). The incorporation of haloacids into the acidic hemolymph could enhance corrosive properties, potentially explaining the rapid degradation observed in xenomorph blood interactions with various materials (e.g., HF if able to corrode glass). Giving some real-world analogs, the xenomorph’s tactics aligns with those of parasitic wasp, such as species of Glyptapanteles, which lays eggs inside caterpillars; the chestburster’s emergence mimics the invasive nature of parasitoids in terrestrial environments (Surridge, 2008).

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