Here is a general description:
GENERAL DESCRIPTION: Adult length about 7-10 mm. Head and thorax black with yellowish pubescence, palpi and antennae brown, forelegs brown, middle and hind legs pale yellowish. Wings broad, brownish yellow, with no pattern. Details of wing venation are given in original description. Females closely resemble males. The larva has not been described.
Additional information:
DISTRIBUTION: San Bernardino County, California. Known only from the type
locality and Thurman Flats.
HABITAT: No information has been published on the larva of this species, but other larvae in the genus live in fast-flowing, cool streams.
LIFE HISTORY/BEHAVIOR: Adults have been collected in May. Diplectrona larvae live in fixed retreats made mostly from plant materials, and spin attached silken "capture nets" which filter food particles from the water.
This is the source of the above information:
I could not find any photos...