안녕하세요!

Sure. Because we are identifying blinking lights as a mating ritual performed by males to attract females

we can interpret the resulting speciation as a result of sexual selection.

The two terms often bleed into each other so it's hard to find an exact point in which one should be considered

behavioral isolation compared to sexual selection.

But in most cases, (not all!), sexual selection is used in terms of describing what happens within a single species.

Peacock tails are often cited as an example of how mate preference in females drives phenotypical changes among males.

Females want bigger tails, so males that have bigger tails can mate more frequently.

This is referred to as sexual selection because we are talking about one species.

It's important to remember that because a male peacock may not have the "flashiest" tail, 

does not mean it cannot interbreed with female peacocks at all. 

It's just that its chances are reduced compared to the competition.

Whereas, behavioral isolation is often used to describe what happens between different species.

Elaborate mating rituals by male birds on species A, may not be recognized by female birds of species B.

In this scenario, the female preference of species B does not drive changes to occur in males of species A.

They simply remain separate because they are already different species, so there is no selective pressure.

This is more focused on the relationship between the two species and why they remain separate.

When we are looking at this particular problem, it is already established that the fireflies are different species (different scientific names)

therefore, we are focused on what keeps the two species continuously separate from each other

which is why behavioral isolation would be a more fitting term to use here, rather than sexual selection.

But again, the terms do overlap, so they are often used interchangeably.

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열공하시고 혹시 또 질문이 생기면 게시판에서 만나요! :D