title: Moravecia australiensis n. g., n. sp. (Dracunculoidea: Guyanemidae) from the gills of the green porcupine fish Tragulichthys jaculiferus (Cuvier) in Australia.
abstract: A new dracunculoid genus and species, Moravecia australiensis, is described from gill-filaments of the green porcupine fish Tragulichthys jaculiferus (Cuvier) (Tetraodontiformes: Diodontidae) from Moreton Bay, Queensland, Australia. Abundant mobile larvae and a few adult males with females occurred in the gill-filament between the epithelial basement membrane and efferent artery. Gills of all 69 fish examined contained larvae. Eleven harboured adult nematodes of a previously undescribed species belonging to the family Guyanemidae. The new species is placed within a newly proposed genus because it differs from the four existing genera in the family in possessing fine cuticular transverse striations, two forward protruding cephalic elevations, a circumoral elevation, a small triangular mouth surrounded by six cephalic papillae arranged in two lateral clusters of three each and a pair of large lateral amphids. Males have two pairs of pedunculate caudal papillae supporting the caudal alae. A key to the genera of the Guyanemidae is presented.
authors.affiliation: Department of Microbiology and Parasitology, University of Queensland, Brisbane, Queensland 4072, Australia.
authors.forename: Dalisay L
authors.initials: DL
authors.lastname: Ribu
authors.forename: Robert J G
authors.initials: RJ
authors.lastname: Lester
mesh_terms: D000818:Animals; D017176:Dracunculoidea / Q000033:anatomy & histology* / Q000648:ultrastructure; D005260:Female; D005399:Fishes / Q000469:parasitology*; D005880:Gills / Q000469:parasitology; D008297:Male; D008855:Microscopy, Electron, Scanning; D011793:Queensland