Insects being tended by Argentine ants.
LA River Whitsett
Sepulveda Basin LA River
Two of these near one another seeming to bob up and down..a courtship thing??
ID uncertain. This species has not been observed previously in TX.
Really pretty underwings.
Host appears to be an Acronicta sp. caterpillar, Ophiocordyceps elongata
Excellent find! Host and morphology are a good match to O. elongata—uncommon.