Wolf Trap's 13th season opens June 28 with a variety of symphony and pop concerts, dance, the hit opera "The Mother of Us All" about Susan B. Anthony, and star performances by Judy Collins, Smokey Robinson, Harry Belafonte, Burl Ives, Arlo Guthrie, David Bromberg and others, executive director Ed Mattos announced yesterday.

At a cocktail party for the press in the elegant Washington townhouse of Wolf Trap founder Catherine Filene Shouse last night, Mattos said the nine-week, 56-performance season is especially "tailored to the Meadow Center," a temporary stage used while the burned Filene Center is rebuilt. The season is three weeks shorter than last year's, which had 69 performances.

Mattos said steps have been taken to improve the acoustics of the temporary structure, which drew complaints last year. Reserved seats will be available this year. "The elitist system rises again," said Mattos.

Shouse said the new $18 million Filene Center II should be ready for the 1984 season "if the weather's good to us." She said she met with architects and builders yesterday and, "We are very much encouraged."

Mattos said this season will open with three days of performances by the soloists of the Royal Danish Ballet and, following that, the National Symphony Orchestra, Bill Monroe and the Bluegrass Boys, and a traditional evening of military music. The season closes Aug. 28 with a Wolf Trap Opera Company showcase of highlights from "La Bohe me."

The season will include such varied attractions as the music and dance of Spain's 160-member national music theater, Zarzuela, which Mattos said is "indeed the hit show of Europe . . . with all the gaiety and life of" Spain; The Manhattan Transfer and America, pop music groups; a comedy and musical evening with the Smothers Brothers and The 5th Dimension; and Count Basie and His Orchestra.

For the first time, Wolf Trap will show a series of epic films, including "Gone With the Wind," "The Wizard of Oz," "Ben Hur," "2001" and "Captain From Castile." Mattos said the films will be shown on a 40-by-60 foot screen.

Besides Basie, jazz performances will include Betty Carter and Her Trio, the Preservation Hall Jazz Band, and a Gershwin Evening with Phyllis Diller and Marian McPartland. Dance will include the Joffrey II Dancers making their debut at Wolf Trap in three performances.

A strong offering of classical music will be made by the NSO, Baltimore Symphony, Cleveland Symphony and Richmond Symphony, which will play a pop concert with The New Swingle Singers.

Bluegrass programs will feature Bill Monroe and the Bluegrass Boys, Doc Watson, the Whites, Ricky Skaggs and the Seldom Scene. An Appalachian afternoon will feature Trapezoid and the Fiddle Puppets.

The Meadow Center is a modular structure of panels stretched between aluminium arches near the site of the Filene Center, which burned April 4, 1982.

The replacement structure under construction resembles the old one, but has more fire-protection devices. It is being paid for with a $9 million federal grant and $9 million in private funds that Wolf Trap is seeking to raise in a nationwide campaign.

Washington public-relations man Robert K. Gray, Wolf Trap's chairman, said yesterday $3.7 million has been raised in contributions and pledges from 10,000 people in 47 states and five foreign countries. He said this outpouring engendered "a great feeling of hope but you can see we've just begun."

In the same campaign, Wolf Trap is seeking to raise an $11 million endowment to support its programs and help keep down ticket prices, which this season will range from $4 for lawn seats to $16.50.