var Tagname = 'Species';
options.push(<Tagname {...attrs}/>);

Warning: <Species /> is using uppercase HTML. Always use lowercase HTML tags in React.
Warning: The tag <Species> is unrecognized in this browser. If you meant to render a React component, start its name with an uppercase letter.

var Tagname = Species;    //component itself, not string
<Tagname {...attrs}/>;

const Map = {
  "componenet1": Component1,
  "componenet2": Component2
}

let name = "componenet1";
let Tagname = Map[name];
<Tagname {...attrs}/>;