<\/p>\n
The classical genus Polygonum<\/em> has been split into Bistorta<\/a>, Fallopia<\/a><\/em> (incl. Reynoutria)<\/em>, Persicaria<\/em>, and Polygonum<\/a><\/em>.<\/p>\n 1a<\/strong> small, brown, tentiform mine: Calybites phasianipennella<\/em><\/a><\/p>\n 1b<\/strong> corridor: Chromatomyia horticola<\/em><\/a><\/p>\n 1c<\/strong> blotch, may be preceded by a corridor => 2<\/p>\n 1d<\/strong> galls, etc => Tables for all parasites per species<\/a><\/p>\n<\/div>\n <\/p>\n 2a<\/strong> large blotch, not preceded by a corridor; larvae communal; at the start of the mine mostly a group of some elongated egg shells => 3<\/p>\n 2b<\/strong> blotch preceded by a narrow corridor; larva solitary; no egg shell visible: Agromyza polygoni<\/em><\/a><\/p>\n<\/div>\n <\/p>\n 3a<\/strong> larva: mandible with some fine teeth: Pegomya bicolor<\/em><\/a><\/p>\n 3b<\/strong> mandible with \u00b1 3 large teeth: Pegomya solennis<\/em><\/a> **<\/p>\n<\/div>\n <\/p>\n ** It is possibly that also Pegomya setaria<\/a><\/em>, primarily a miner of Fallopia<\/em>-species, may occur now and then on Persicaria<\/em>; there is no possibility to discriminate the larva from that of P. solennis<\/em>.<\/p>\nDichotomous table for leafminers<\/h2>\n