(1)
Virkki, N.; Figueroa, W.; SepĂșlveda, J. M. HOWARDULA SP., A NEMATODE NEW FOR PUERTO RICO, PARASITIZING A PARTHENOGENETIC SWEET POTATO-ASSOCIATED FLEA BEETLE, CHAETOCNEMA PERPLEXA BLAKE.
JAUPR
1989
,
73
, 171-174.