Two questions:
1) We have box the gnat (right hand to right hand), swat the flea (left hand to left hand), and star thru (Lark/Gent right hand to Lady/Raven left hand). What is the name of the opposite of a star thru
(Lark/Gent left hand to Lady/Raven right hand)?
MWSD offers one option, probably not a term to use in a contra setting.
Arky Star Thru is a position dependent (rather than dance role dependent version):
This is not exactly what you asked for, which is to use the OTHER HAND than typical of your role, but independent of your position.
Left Star Thru (edited slightly)
>From a boy facing a girl: boy holds left hand up and girl places her right palm against it. boy steps forward and does a quarter left as the girl passes the boy left shoulders under the raised arms and does a quarter right. Finishes as a couple.
https://www.ceder.net/oldcalls/viewsingle.php?RecordId=3616
Note that Bob Isaacs uses "Jersey Twirl" for a wrong-side California Twirl with the Lark going under.
Note that California Twirl (and Jersey Twirl) are 180вк turns, while Star Thru and Arky Star Thru are 90вк turns.
/Andy Shore