what is the other species mentioned earlier that this species preys on?
It is an invertebrate animal having an exoskeleton, a segmented body, and paired jointed appendages
Arthropod
An arthropod (, from Greek "arthron", "joint" and "pous", "foot" (gen. ποδός)) is an invertebrate animal having an exoskeleton, a segmented body, and paired jointed appendages. 
what is the predator of a praying mantis Mantises are generalist predators of arthropods what family or species is this a part of? Mantidae ("mantids") are there any fossils of this found? Yes, from Siberia do they display cannibalistic behavior? Yes, sexual cannibalism what happens in this situation? The female may begin feeding by biting off the male's head and if mating has begun, the male's movements may become even more vigorous in its delivery of sperm is there any biologist who has studied this species? Kristensen, Beier, Ehrmann, Klass to name a few
wiki:16876673
Arthropod [SEP] Introduction
An arthropod (, from Greek "arthron", "joint" and "pous", "foot" (gen. ποδός)) is an invertebrate animal having an exoskeleton, a segmented body, and paired jointed appendages. Arthropods form the phylum Euarthropoda, which includes insects, arachnids, myriapods, and crustaceans. The term Arthropoda as originally proposed refers to a proposed grouping of Euarthropods and the phylum Onychophora. Arthropods are characterized by their jointed limbs and cuticle made of chitin, often mineralised with calcium carbonate. The arthropod body plan consists of segments, each with a pair of appendages. The rigid cuticle inhibits growth, so arthropods replace it periodically by moulting. Arthropods are bilaterally symmetrical and their body possesses an external skeleton.