The alien ship was one of the ships used to seed life by the aliens in "The Chase".
Which is why they could understand a message from 300 million years ago.- Though the aliens in "The Chase" were not insectoid-like, as the alien captain clearly was.
http://tvtropes.org/pmwiki/pmwiki.php/WMG/StarTrekTheAnimatedSeriesS1E1BeyondTheFarthestStar
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