<\/p>\n
1a<\/strong> corridor mine => 2<\/p>\n 1b<\/strong> blotch mine => 8<\/p>\n 1c<\/strong> tentiform mine => 13<\/p>\n 1d<\/strong> fleck mine => 16<\/p>\n 1e<\/strong> mine ends in an oval excision => 18<\/p>\n 1c<\/strong> galls, etc => Tables for all parasites per species<\/a><\/p>\n<\/div>\n <\/p>\n 2a<\/strong> corridor < 15 mm; larva chamber relatively long => 3<\/p>\n 2b<\/strong> corridor > 15 mm; larva chamber relatively shorter => 5<\/p>\n<\/div>\n <\/p>\n 3a<\/strong> corridor proportionally broad => 4<\/p>\n 3b<\/strong> corridor quite slender => 5<\/p>\n<\/div>\n <\/p>\n 4a<\/strong> corridor follows midrib and\/or a thick lateral vein, unbranched; most of the corridor completely filled with frass: Bucculatrix ulmifoliae<\/a><\/em><\/p>\n 4b<\/strong> corridor winding freely, with 2-4 short, frass-free side branches; frass in a central line, leaving a clear zone at either side: Bucculatrix albedinella<\/a><\/em> **<\/p>\n 4c<\/strong> corridor winding freely, without side branches; southern species: Bucculatrix ulmicola<\/em><\/a> <\/p>\n<\/div>\n <\/p>\n 5a<\/strong> mine very compact, corridor densely wound => 6<\/p>\n 5b<\/strong> corridor in wide loops, or following a vein or the leaf margin => 7<\/p>\n<\/div>\n <\/p>\n 6a<\/strong> larva yellow; start of corridor a dense spiral: Stigmella lemniscella<\/em><\/a><\/p>\n 6b<\/strong> larva bright green; start of corridor in a number of zigzagging loops: Stigmella viscerella<\/em><\/a><\/p>\n<\/div>\n <\/p>\n 7a<\/strong> exit slit at upper surface; frass in first part of the corridor broadly dispersed Stigmella lemniscella<\/em><\/a><\/p>\n 7b<\/strong> exit slit at lower surface; frass in first part of the corridor in a narrow line: Stigmella ulmivora<\/em><\/a><\/p>\n<\/div>\n <\/p>\n 8a<\/strong> oviposition site (generally the leaf tip) covered with a shining black drop of hardened secretion: Trachys minutus<\/em><\/a><\/p>\n 8b<\/strong> no such drop => 9<\/p>\n<\/div>\n <\/p>\n 9a<\/strong> oviposition in the underside of the midrib of a thick lateral vein, leaving a clear scar; from there an initially narrow, later quite broad corridor running towards the leaf margin; older mines easily tearing in => 10<\/p>\n 9b<\/strong> no oviposition scar, no initial corridor => 11<\/p>\n<\/div>\n <\/p>\n 10a<\/strong> mine in May-June; oviposition generally in the midrib: Orchestes alni<\/em><\/a><\/p>\n 10b<\/strong> mine in July-August; oviposition generally in a lateral vein: Orchestes betuleti<\/em><\/a><\/p>\n<\/div>\n <\/p>\n 11a<\/strong> blotch containing generally several pink larvae; under the mine a loose spinning, in which grains of frass are hanging: Atemelia torquatella<\/em><\/a><\/p>\n 11b<\/strong> blotch with 1 whitish larvae; no spinning under the mine => 12<\/p>\n<\/div>\n <\/p>\n 12a<\/strong> on Ulmus laevis<\/em> and minor<\/em>; mine usually starts at the leaf margin: Fenusa altenhoferi<\/em><\/a><\/p>\n 12b<\/strong> on Ulmus glabra<\/em>; mine always starts in the centre of the leaf: Fenusa ulmi<\/em><\/a><\/p>\n<\/div>\n <\/p>\n 13a<\/strong> pupa in a flimsy cocoon => 14<\/p>\n 13b<\/strong> pupa in a tough, almost parchmentaceous, cocoon => 15<\/p>\n<\/div>\n <\/p>\n 14a<\/strong> cremaster spines rather weak, outer pair bent backwards: Phyllonorycter agilella<\/a><\/em><\/p>\n 14b<\/strong> cremaster spines very weak, out pair not bent backwards: Phyllonorycter acaciella<\/a><\/em><\/p>\n 14c<\/strong> pupa unknown; described from Rhodes: Phyllonorycter brunnea<\/a><\/em>.<\/p>\n<\/div>\n <\/p>\n 15a<\/strong> mine short, round or oval; pupa dark brown in a greenish cocoon: Phyllonorycter schreberella<\/em><\/a><\/p>\n 15b<\/strong> mine long, tube-like, between two veins; pupa light brown in a brown cocoon: Phyllonorycter tristrigella<\/em><\/a><\/p>\n<\/div>\n <\/p>\n 16a<\/strong> lobe case: Coleophora violacea<\/em><\/a><\/p>\n 16b<\/strong> composite leaf case: Coleophora serratella<\/em><\/a> (youth case)<\/p>\n 16c<\/strong> tubular leaf case: Coleophora serratella<\/em><\/a> (final case)<\/p>\n 16d<\/strong> spatulate leaf case => 17<\/p>\n<\/div>\n <\/p>\n 17a<\/strong> case of full grown larva 9-11.5 mm: Coleophora limosipennell<\/em>a<\/a><\/p>\n 17b<\/strong> case finally 5-6 mm: Coleophora badiipennella<\/em><\/a><\/p>\n<\/div>\n <\/p>\n 18a<\/strong> much frass is expelled from an opening at the very beginning of the mine (mostly in a vein axil): Coleophora limosipennella<\/a><\/em> (youth mine)<\/p>\n 18b<\/strong> frass remains in the mine: Coleophora badiipennella<\/a><\/em> (youth mine)<\/p>\n<\/div>\n <\/p>\n ** Very occasionally a Stigmella<\/em> can show a pathological behaviour that resembles this: pseudo-Bucculatrix<\/a><\/em>“<\/p>\n Not included in the key: Apterona gracilis<\/a>; Ectoedemia preisseckeri<\/a>; Orchestes quedenfeldtii<\/a>; Stigmella ulmiphaga<\/a><\/em>.<\/p>\n <\/p>","protected":false},"excerpt":{"rendered":" Ulmus elm (For a dichotomous table for galls on Ulmus by Hans Roskam click here) Dichotomous table for leafminers 1a corridor mine => 2 1b blotch mine => 8 1c tentiform mine => 13 1d fleck mine => 16 1e mine ends in an oval excision => 18 1c galls, etc => Tables for all […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":32282,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"host-genus.php","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-32283","page","type-page","status-publish","hentry","category-host-plant"],"_links":{"self":[{"href":"https:\/\/bladmineerders.nl\/en\/wp-json\/wp\/v2\/pages\/32283","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bladmineerders.nl\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/bladmineerders.nl\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/bladmineerders.nl\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bladmineerders.nl\/en\/wp-json\/wp\/v2\/comments?post=32283"}],"version-history":[{"count":0,"href":"https:\/\/bladmineerders.nl\/en\/wp-json\/wp\/v2\/pages\/32283\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/bladmineerders.nl\/en\/wp-json\/wp\/v2\/pages\/32282"}],"wp:attachment":[{"href":"https:\/\/bladmineerders.nl\/en\/wp-json\/wp\/v2\/media?parent=32283"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bladmineerders.nl\/en\/wp-json\/wp\/v2\/categories?post=32283"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bladmineerders.nl\/en\/wp-json\/wp\/v2\/tags?post=32283"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}