{"id":721722,"date":"2020-05-16T06:47:10","date_gmt":"2020-05-16T04:47:10","guid":{"rendered":"https:\/\/bladmineerders.nl\/backgrounds\/specials\/gallers-on-malva\/"},"modified":"2023-11-18T11:05:47","modified_gmt":"2023-11-18T10:05:47","slug":"gallers-on-malva","status":"publish","type":"page","link":"https:\/\/bladmineerders.nl\/en\/host-plants\/plantae\/spermatopsida\/angiosperma\/eudicots\/superrosids\/rosids\/malvids\/malvales\/malvaceae\/malvoideae\/malveae\/malva\/gallers-on-malva\/","title":{"rendered":"gallers on genus Malva"},"content":{"rendered":"

Dichotomous table for gallers on Malva<\/em><\/h2>\n

(incl. Lavatera, Malope<\/em>)<\/p>\n

by Hans Roskam<\/p>\n

\n

1a<\/strong> On parts above ground => 2<\/p>\n

1b<\/strong> Root with nodular swellings. M. sylvestris: Meloidogyne hapla<\/a><\/em><\/p>\n<\/div>\n

<\/p>\n

\n

2a<\/strong> Malformations on vegetative parts, only sometimes encroaching onto primordia of inflorescences => 3<\/p>\n

2b<\/strong> Single mericarps between the other hardly changed mericarps conspicuously swollen, up to twice the normal size. Containing a curved beetle larva. M. alcea, multiflora, neglecta, pusilla, subovata, sylvestris, trimestris: Malvapion malvae<\/a><\/em><\/p>\n<\/div>\n

<\/p>\n

\n

3a<\/strong> Expanded malformations of leaves caused by animals => 5<\/p>\n

3b<\/strong> Localised galls on stems or small pads bearing sori on all green organs => 4<\/p>\n<\/div>\n

<\/p>\n

\n

4a<\/strong> Leaf blades, -stalks, axial parts of shoots, even calyx and green fruits with many small, rotund or oblong, yellowish, eventually red- to dark brown spores bearing bulges. Malva spp.: Puccinia malvacearum<\/a><\/em><\/p>\n

4b<\/strong> Plant \u00b1 atrophied; stem thickened, distorted; inner wall browned. M. moschata<\/em>: Inducer unknown<\/p>\n<\/div>\n

<\/p>\n

\n

5a<\/strong> Malformations with abnormal pubescence; caused by mites => 8<\/p>\n

5b<\/strong> Malformations lacking abnormal pubescence; caused by aphids, scale insects or spittlebugs => 6<\/p>\n<\/div>\n

<\/p>\n

\n

6a<\/strong> Malformations contain aphids => 7<\/p>\n

6b<\/strong> Shoot axis often with several oval to spindle-shaped swellings with centrally rimmed depressions which contain a flat froth-covered nymph. M. thuringiaca: Planchonia arabidis<\/a><\/em><\/p>\n

6c<\/strong> eaves curled, deflected, nest-like; often deep green at infestation site. Infestation on erect young plants usually similarly involving several leaves. Containing a froth-covered nymph. Malva spp.: Philaenus spumarius<\/a><\/em><\/p>\n<\/div>\n

<\/p>\n

\n

7a<\/strong> Leaf margin deflected or rolled downwards. Leaf blade variously curled to undulate, sometimes arched, umbrella-like. Infestation often on terminal leaves. Aphids green. Malva spp.: Aphis umbrella<\/a><\/em><\/p>\n

7b<\/strong> Similar, less conspicuous malformations caused by black aphids. M. neglecta, sylvestris: Aphis fabae<\/a><\/em><\/p>\n

7c<\/strong> Leaf blade wrinkled. M. neglecta, sylvestris, thuringiaca: Aphis althaeae<\/a><\/em><\/p>\n

7d<\/strong> Leaf blade \u00b1 strongly wrinkled, margins deflected. Containing pale green aphids with siphunculi half as long as to equalling cauda. M. neglecta, parviflora, pusilla, sylvestris, thuringiaca, trimestris: Acyrthosiphon malvae<\/a><\/em><\/p>\n<\/div>\n

<\/p>\n

\n

8a<\/strong> Shoot tip stunted. Leaf blade variously disfigured and atrophied, \u00b1 thickened, rolled inwards, curled or undulate and excessively haired; often yellowing prematurely. M. alcea, moschata, thuringiaca: Aceria gymnoprocta<\/a><\/em><\/p>\n

8b<\/strong> Segments of older leaves \u00b1 converging and disfigured, bag-like; usually on leaf underside on the thickened veins with dense, yellowish, felt-like pubescence. Younger leaves, densely clustered at shoot tips, similarly but more severely disfigured, often haired on both sides. Erinea also on petioles, shoot axis and calyx. M. alcea, moschata, thuringiaca: Aceria gymnoprocta<\/a><\/em><\/p>\n<\/div>\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

Dichotomous table for gallers on Malva (incl. Lavatera, Malope) by Hans Roskam 1a On parts above ground => 2 1b Root with nodular swellings. M. sylvestris: Meloidogyne hapla 2a Malformations on vegetative parts, only sometimes encroaching onto primordia of inflorescences => 3 2b Single mericarps between the other hardly changed mericarps conspicuously swollen, up to […]<\/p>\n","protected":false},"author":3,"featured_media":0,"parent":33195,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-721722","page","type-page","status-publish","hentry","category-host-plant-genus-galler"],"_links":{"self":[{"href":"https:\/\/bladmineerders.nl\/en\/wp-json\/wp\/v2\/pages\/721722","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\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/bladmineerders.nl\/en\/wp-json\/wp\/v2\/comments?post=721722"}],"version-history":[{"count":0,"href":"https:\/\/bladmineerders.nl\/en\/wp-json\/wp\/v2\/pages\/721722\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/bladmineerders.nl\/en\/wp-json\/wp\/v2\/pages\/33195"}],"wp:attachment":[{"href":"https:\/\/bladmineerders.nl\/en\/wp-json\/wp\/v2\/media?parent=721722"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bladmineerders.nl\/en\/wp-json\/wp\/v2\/categories?post=721722"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bladmineerders.nl\/en\/wp-json\/wp\/v2\/tags?post=721722"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}