Additions, new illustrations, important corrections.
June, 2020
Last modified 29.vi.2020 12:34
new pictures
Aceria erinea, tristriata; Aculus convolvuli; Agromyza megalopsis; Antispila metallella; Apoderus coryli; Attelabus nitens; Biorhiza pallida; Byctiscus betulae; Cladius brullei, grandis, ulmi; Contarinia sorbi; Curculio villosus; Dasineura acrophila, rosae; Ditylenchus dipsaci; Dysaphis tulipae; Eulecanium tiliae; Euura anglica, melanocephala; Galeruca tanaceti; Incurvaria pectinea; Josephiella microcarpae; Macrodiplosis pustularis; Metzneria lappella; Monochroa conspersella (pupa); Monodiplosis liebeli; Nematus latipes; Pamphilius gyllenhali; Pegomya cunicularia; Pemphigus phenax; Peronospora dipsaci; Phyllocnistis valentinensis (pupa); Phylloxera cf. coccinea; Phytomyza spinaciae; Placochela nigripes; Rabdophaga heterobia, marginemtorquens; Rhadinoceraea reitteri; Taphrina pruni; Tenthredo scrophulariae; Trachys minutus; Yponomeuta sedella.
May, 2020
Last modified 29.v.2020 8:52
new pictures
Abia sericea; Aceria liszkai; Acleris hastiana; Aculus scutellariae; Allantus cinctus, viennensis; Ametastegia equiseti; Andricus foecundatrix, hungaricus; Anthonomus pedicularius; Apethymus spec.; Aspidiotus nerii; Blennocampa phyllocolpa; Byctiscus betulae; Cacopsylla spec.; Caliroa cerasi; Cimbex femoratus, luteus; Cladius compressicornis, grandis; Claremontia cf. alternipes; Colletotrichum nymphaeae; Contarinia tiliarum; Dasineura fructum, gleditchiae; Diprion similis; Dolerus madidus; Eriocampa ovata; Eriocrania sangii; Eriosoma lanuginosum; Euura papillosa, pavida, ribesii, tibialis; Fenusella glaucopis, hortulana; Gilpinia frutetorum, virens, spec.; Hemichroa australis, crocea; Hydraecia micacea; Liriomyza cf balcanica; Macrophya ribis; Macrosiphum albifrons; Metzneria lappella; Mompha ochraceella; Monochroa conspersella; Monoctenus juniperi; Myzus persicae; Nematinus luteus; Neuroterus politus; Neurotoma saltuum; Periclista spec.; Phyllocnistis extrematrix; Platycampus luridiventris; Pristiphora geniculata; Pseudoclavellaria amerinae; Sciapteryx consobrina; Spilopodia nervisequa; Stauronematus platycerus; Taphrina padi; Tenthredo vespa, zona; Tuberculina maxima.
April, 2020
Last modified 30.iv.2020 14:55
new identification keys for galls by Hans Roskam
Aconitum, Aegopodium, Alchemilla, Alliaria, Alopecurus, Alyssum, Anchusa, Anthemis, Anthyllis, Apium, Aquilegia, Armoracia, Arrhenatherum, Avenula, Berberis, Berteroa, Bidens, Camelina, Carpinus, Carum, Chaerophyllum, Clematis, Cornus, Corylus, Cucumis, Cydonia, Echium, Erysimum, Fragaria, Geum, Gypsophila, Helianthemum, Hypericum, Isatis, Mentha, Knautia, Laserpitium, Lithospermum, Moehringia, Onobrychis, Papaver, Phalaris, Phragmites, Phyteuma, Picris, Pisum, Primula, Raphanus, Rrorippa, Salvia, Satureja s.l., Saxifraga, Scabiosa, Scorzonera, Scrophularia, Secale, Sedum, Stachys, Symphytum, Taraxacum, Thymus, Torilis, Tragopogon, Vaccinium, Valeriana, Viburnum, Vinca.
new pictures
Aceria fraxinivora; Andricus seminationis; Contarinia medicaginis, tiliarum; Eucosma cumulana; Euura collactanea, prussica; Grapholita lobarzewskii; Pristerognatha fuligana; Protomyces pachydermus; Ptycholoma lecheana; Puccinia antirrhini; Rabdophaga salicis; Tischeria decidua; Uroleucon jaceae; cf Uromyces striatus.
March, 2020
Last modified 31.iii.2020 6:00
new identification keys for galls by Hans Roskam
Agrostis, Angelica, Arabis, Beta, Calamagrostis, Capsella, Cerastium, Chenopodium, Cytisus, Daucus, Dianthus, Erigeron, Fagus, Galeopsis, Genista, Hordeum, Hypochaeris, Inula, Lactuca, Lamium, Leontodon, Linaria, Lolium, Matricaria, Pastinaca, Pinus, Plantago, Poa, Sisymbrium.
new pictures
Andricus quercusradicis; Antispilina ludwigi; Brachycaudus helichrysi; Cimbex femoratus; Cystiphora sonchi; Depressaria radiella; Diodaulus linariae; Erysiphe heraclei; Euura brevicornis; Hellinsia lienigianus; Janetiella lemeei; Lasioptera rubi; Leptotrochila verrucosa; Liposthenes glechomae; Myzus ligustri; Orchestes testaceus; Pemphigus spyrothecae; Physokermes piceae; Platycampus luridiventris; Protomycopsis bellidis; Pseudoneuroterus saliens; Puccinia magnusiana; Septocyta ruborum; Simplimorpha promissa; Spuleria flavicaput; Steneotarsonemus phragmitidis; Stigmaeopsis nanjingensis; Synophrus hispanicus; Taphrina johansonii, rhizophora; Thecodiplosis brachyntera; Venturia inaequalis.
February, 2020
Last modified 4.iv.2020 17:18
new identification keys for galls by Hans Roskam
Anemone s.l., Aster s.l., Avena, Cardamine, Astragalus, Epilobium s.l., Festuca s.l., Filipendula, Fraxinus, Juniperus, Lonicera, Peucedanum, Picea, Pimpinella, Sinapis, Solanum, Sorbus, Stellaria, Tilia.
new pictures
Aceria eucricotes; Acericecis szepligetii; Amauromyza fraxini; Andricus aries,
callidoma; Calyciphora albodactylus; Eriosoma lanigerum; Erysiphe arcuata; Fenusella nana; Isocolus scabiosae; Kaltenbachiella pallida; Microstroma album; Mollisia plantaginis; Mycosphaerella isariphora; Nemorimyza posticata; Phyllachora graminis; Pseudaulacaspis pentagona; Pseudomicrostroma juglandis; Spilopodia nervisequa; Stigmina carpophila.
January, 2020
Last modified 26.v.2020 6:06
new pictures
Aphis farinosa; Aulagromyza luteoscutellata; Brassicogethes aeneus; Coleophora badiipennella; Hyalopterus pruni; Janetia homocera; Microbotryum cordae; Mollisia plantaginis; Neodiprion sertifer; Peronospora calotheca; Phyllonorycter klemannella; Plectosphaerella alismatis; Prociphilus fraxinifolii; Sphacelotheca hydropiperis; Tranzschelia pruni-spinosae; Heterotrioza chenopodii, rhamni.
December, 2019
Last modified 7.ii.2020 13:26
new identification keys by Hans Roskam
Brassica, Campanula, Crataegus, Euphorbia, Geranium, Hieracium, Medicago, Potentilla, Pyrus, Rhamnus, Ribes, Senecio, Silene, Ulmus, Vicia, Viola
new pictures
Aproceros leucopoda; Caloptilia roscipennella; Fenusa dohrnii; Phyllonorycter schreberella; Pterocomma populeum.
November, 2019
Last modified 5.ix.2020 11:51
new identification keys
Hans Roskam has written identification keys to the galls on the “large” genera: Acer, Achillea, Alnus, Artemisia, Carex, Centaurea, Chrysanthrmum s.l., Cirsium, Crepis, Elymus s.l., Galium, Lathyrus, Malus, Populus, Prunus, Quercus, Rosa, Rubus, Rumex, Salix, Trifolium, and Veronica.
new pictures
Aceria pyracanthi;
Agromyza idaeiana; Andricus legitimus, sieboldi; Brevicoryne brassicae; Caloptilia cuculipennella; Chaitophorus leucomelas; Coleophora albicans, deviella, fuscocuprella; Curculio spec.; Ectoedemia intimella; Erysiphe convolvuli var. convolvuli; Fenusa ? altenhoferi, ewaldi; Physemocecis hartigi, ulmi; Plasmopara chaerophylli; Pucciniastrum areolatum; Rhopalomyia florum; Urophora stylata; .
October, 2019
Last modified 25.x.2019 9:31
new gall midge for the Benelux
new pictures
Acericecis campestre; Amauromyza elaeagni; Andricus foecundatrix; Antispila treitschkiella; Coleophora cornutella; Euura auritae, triandrae; Lampronia fuscatella; Lasioptera arundinis; Lipara similis; Metopeurum fuscoviride; Pediaspis aceris; Phragmidium potentillae; Phyllonorycter lantanella; Rabdophaga dubiosa; Tetranychus urticae; Tuberculatus annulatus.
September, 2019
Last modified 16.vii.2020 17:26
new gall midge for the Benelux
new pictures
cf Abacarus hystrix, Aceria achilleae, cornuta, salviae; Aculus schmardae; Americina media; cf Blastodiplosis artemisiae; Botrytis convallariae; Chilaspis nitida; Coleophora sccifolia; Coleosporium asterum; Dasineura gleditchiae, similis, tetrahit; Eotetranychus tiliarium, Eriophyes pyri; Eteobalea teucrii; Eucallipterus tiliae; Gephyraulus raphanistri; Liposthenes glechomae; Macrolabis achilleae; Melanagromyza lappae; Microbotryum saponariae; Ozirhincus millefolii; Peronospora lepigoni; Pseudopeziza meliloti, trifolii; Puccinia sessilis, taraxaci; Rabdophaga rosaria, salicis; Rhopalomyia florum, tanaceticola; Stigmella lonicerarum, rhamnella; Uromyces junci; Wachtliella persicariae; ? on Acer pseudoplatanus, ? on Celtica gigantea.
August, 2019
Last modified 9.x.2019 13:43
Important publication
JC Roskam, Plant Galls of Europe. Three volumes hard bound set, 2292 pages, € 399.
The book offers an English translation and modernisation of Herbert Buhr’s 1964/’65 compendium of the European plant galls. Moreover the older work of Houard, that was more specifically aimed at southern Europe has been incorporated, and of course the body of literature after Buhr’s time has been taken into account. All together well over 10 000 species of gall inducing organisms have been treated, keyed out in dichotomous keys per plant genus.
A work of this size without errata obviously is unthinkable. The autor will make them available in this site, on page: Errata to Roskam (2019)
new species for Belgium:
Aceria brachytarsus; Microbotryum cordae
new pictures
Acentria ephemerella; Aceria achilleae, thomasi; Aculus acraspis; Aecidium euphorbiae; Aleurotuba jelinekii; Andricus caputmedusae, lignicolus, quercustozae; Anthracoidea subinclusa; Aphidoletes aphidimyza; Aphis cytisorum, fabae cirsiiacanthoidis; Arge berberidis; Asphondylia hornigi, verbasci; Cercosporella virgaureae; Cerroneuroterus lanuginosus; Chromatomyia gentianae; Contarinia quinquenotata, sambuci; Cynips quercusfolii; Cystiphora sanguinea; Dasineura asparagi, berberidis, excavans, filipendulae, odoratae, similis; Deightoniella roumeguerei; Entyloma cosmi; Eriophyes cf. laevis; Exobasidium sydowianum; Farysia thuemenii; Gymnosporangium cf asiaticum; Hyadaphis cf foeniculi; Hyaloperonospora erophilae; Isocolus scabiosae; Kiefferia pericarpiicola; Livia junci; Mayetiola graminis; Microbotryum anomalum; Mikomya coryli; Neuroterus quercusbaccarum; Ochropsora ariae; Pemphigus cf gairi, populinigrae; Peronospora holostei; Phyllocoptruta coryli; Physoderma pulposum; Plagiotrochus quercusilicis; Pseudomonas savastanoi pv retacarpa; Pseudoneuroterus saliens; Puccinia aristolochiae; Pulvinaria hydrangeae; Rabdophaga jaapi; Ramularia ajugae, heraclei; Sacchiphantes abietis; Septoria crataegi; Subanguina millefolii; Thecabius affinis; Timaspis lusitanica; Trama troglodytes; Uroleucon solidaginis, telekiae;Uromyces laburni; Viteus vitifoliae; unknown on Sideritis raeseri; unknown Agromyzidae mine on Achillea grandifolia.
July, 2019
Last modified 31.vii.2019 14:14
Important new book
Julia Kruse, 2019a. Faszinierende Pflanzenpilze: erkennen und bestimmen. Quelle & Meyer, pp 528, ca. € 40.
Discusses several hundreds species of parasitic fungi, based on pictures of their macroscopic infection image, arranged by plant species.
new pictures
Aceria opulifolii; Callipterinella tuberculata; Calophya rhois; Choreutis pariana; Coleophora albella, arctostaphyli, bornicensis, striatipennella; Dasineura on Stellaria graminea, tortilis; Erysiphe knautiae; Forda formicaria; Fusarium lolii; Heterarthrus ochropoda; Hyaloperonospora rorippae-islandicae, sisymbrii-loeselii; Macrolabis lonicerae; Microbotryum saponariae; Millieria dolosalis; Myzus cerasi; Pegomya meridiana; Periclista lineolata; Peronospora on Vicia tetrasperma; Phragmidium violaceum; Phyllonorycter cephalariae; Podosphaera phtheirospermi; Pseudoclavellaria amerinae; Pseudodineura fuscula; Puccinia phragmitis; Spurgia cf euphorbiae; Thecaphora oxalidis, saponariae.