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57 results for “seed chalcids”
Supplementary material 1 from: Roques A, Copeland RS, Soldati L, Denux O, Auger-Rozenberg M-A (2016) Megastigmus seed chalcids (Hymenoptera, Torymidae) radiated much more on Angiosperms than previously considered. I- Description of 8 new species from Kenya, with a key to the females of Eastern and Southern Africa. ZooKeys 585: 51-124. https://doi.org/10.3897/zookeys.585.7503
Sampling details on specimens used in the genetic study : Explanation note: Collection data for the specimens used in the genetic study:
F in Seed-infesting chalcids of the genus Megastigmus Dalman, 1820 (Hymenoptera: Torymidae) native and introduced to the West Palearctic region: taxonomy, host specificity and distribution
F. 8. Forewing of M. suspectus X, ex. Abies alba, Denmark. bc, basal cell; bsl, basal setal line; cc, costal cell; cu, cubital vein; pmv, postmarginal vein; smv, submarginal vein; spc, speculum; stg, stigma; stv, stigmal vein; ustv, upper part of stigmal vein.
F in Seed-infesting chalcids of the genus Megastigmus Dalman, 1820 (Hymenoptera: Torymidae) native and introduced to the West Palearctic region: taxonomy, host specificity and distribution
F 78–86. Male stigma of Megastigmus seed chalcids. (78) M. pistaciae; (79) M. rafni; (80) M. schimitscheki; (81) M. specularis; (82) M. spermotrophus; (83) M. strobilobius; (84) M. suspectus; (85) M. transvaalensis; (86) M. wachtli. Same origins as in (39–47). Scale bars=100 mm, except for (81, 83)=50 mm.
F in Seed-infesting chalcids of the genus Megastigmus Dalman, 1820 (Hymenoptera: Torymidae) native and introduced to the West Palearctic region: taxonomy, host specificity and distribution
F. 4. Electroscan front view of head, M. bipunctatus X, ex. Juniperus communis, France. Same abbreviations as in (2, 3). Scale bar=100 mm.
F in Seed-infesting chalcids of the genus Megastigmus Dalman, 1820 (Hymenoptera: Torymidae) native and introduced to the West Palearctic region: taxonomy, host specificity and distribution
F. 3. Front view of head, M. pictus X, ex. Larix decidua, Poland. ao, anterior ocellus; cly, clypeus; gen, gena; iaa, interantennal area; msl, malar sulcus; msp, malar space; po, posterior ocellus; psa, parascrobal area; sca, supraclypeal area; scr, scrobe; tor, torulus. Scale bar=1 mm.
F in Seed-infesting chalcids of the genus Megastigmus Dalman, 1820 (Hymenoptera: Torymidae) native and introduced to the West Palearctic region: taxonomy, host specificity and distribution
F 124–129. Electroscan photographs of scutellum of female Megastigmus. (124) M. aculeatus; (125) M. amicorum; (126) M. atedius; (127) M. atlanticus; (128) M. bipunctatus; (129) M. brevicaudis. Same origins as in (11–16). Scale bars=100 mm.
F in Seed-infesting chalcids of the genus Megastigmus Dalman, 1820 (Hymenoptera: Torymidae) native and introduced to the West Palearctic region: taxonomy, host specificity and distribution
F 115–123. Male genitalia of Megastigmus seed chalcids. (115) M. pinus; (116) M. pistaciae; (117) M. rafni; (118) M. schimitscheki; (119) M. specularis; (120) M. spermotrophus; (121) M. strobilobius; (122) M. suspectus; (123) M. transvaalensis. Same origins as in (38–46). Scale bar=100 mm.
F in Seed-infesting chalcids of the genus Megastigmus Dalman, 1820 (Hymenoptera: Torymidae) native and introduced to the West Palearctic region: taxonomy, host specificity and distribution
F 136–144. Electroscan photographs of scutellum of female Megastigmus. (136) M. rafni; (137) M. rosae, Bulgaria; (138) M. schimitscheki; (139) M. specularis; (140) M. spermotrophus; (141) M. strobilobius; (142) M. suspectus; (143) M. transvaalensis; (144) M. wachtli. Same origins as in (23–31). Scale bars=100 mm, except for (138, 142). Scale bars=200 mm.
F in Seed-infesting chalcids of the genus Megastigmus Dalman, 1820 (Hymenoptera: Torymidae) native and introduced to the West Palearctic region: taxonomy, host specificity and distribution
F 154–162. Electroscan photographs of scutellum of male Megastigmus. (154) M. pistaciae; (155) M. rafni; (156) M. schimitscheki; (157) M. specularis; (158) M. spermotrophus; (159) M. strobilobius; (160) M. suspectus; (161) M. transvaalensis; (162) M. wachtli. Same origins as in (39–47). Scale bars=100 mm.
F in Seed-infesting chalcids of the genus Megastigmus Dalman, 1820 (Hymenoptera: Torymidae) native and introduced to the West Palearctic region: taxonomy, host specificity and distribution
F 107–114. Male genitalia of Megastigmus seed chalcids. (107) M. aculeatus; (108) M. amicorum; (109) M. atedius; (110) M. bipunctatus; (111) M. milleri; (112) M. nigrovariegatus; (113) M. pictus; (114) M. pinsapinis. Same origins as in (32–37, 76). Scale bar=100 mm.
F in Seed-infesting chalcids of the genus Megastigmus Dalman, 1820 (Hymenoptera: Torymidae) native and introduced to the West Palearctic region: taxonomy, host specificity and distribution
F 48–59. Female stigma of Megastigmus seed chalcids. (48) M. aculeatus; (49) M. amicorum; (50) M. atedius; (51) M. atlanticus, ex. Cupressus atlantica, Morocco; (52) M. bipunctatus; (53) M. brevicaudis; (54) M. milleri; (55) M. nigrovariegatus; (56) M. pictus; (57) M. pinsapinis; (58) M. pinus; (59) M. pistaciae. Same origins as in (11–22). Scale bars=100 mm, except for (58)=50 mm.
F in Seed-infesting chalcids of the genus Megastigmus Dalman, 1820 (Hymenoptera: Torymidae) native and introduced to the West Palearctic region: taxonomy, host specificity and distribution
F 32–39. Male antenna of Megastigmus. (32) M. aculeatus, France; (33) M. amicorum, Portugal; (34) M. atedius, France; (35) M. bipunctatus, France; (36) M. milleri, the Netherlands; (37) M. pictus, Poland; (38) M. pinus, France; (39) M. pistaciae, Italy. Scale bar=200 mm.
F in Seed-infesting chalcids of the genus Megastigmus Dalman, 1820 (Hymenoptera: Torymidae) native and introduced to the West Palearctic region: taxonomy, host specificity and distribution
F 22–31. Female antenna of Megastigmus. (22) M. pistaciae, Croatia; (23) M. rafni, France; (24) M. rosae, France; (25) M. schimitscheki, Lebanon; (26) M. specularis, Finland; (27) M. spermotrophus, France; (28) M. strobilobius, Poland; (29) M. suspectus, France; (30) M. transvaalensis, Morocco; (31) M. wachtli, Greece. Scale bar=200 mm.
F in Seed-infesting chalcids of the genus Megastigmus Dalman, 1820 (Hymenoptera: Torymidae) native and introduced to the West Palearctic region: taxonomy, host specificity and distribution
F 69–77. Male stigma of Megastigmus seed chalcids. (69) M. aculeatus; (70) M. amicorum; (71) M. atedius; (72) M. bipunctatus; (73) M. milleri; (74) M. nigrovariegatus, France; (75) M. pictus; (76) M. pinsapinis, Mt Ventoux, France; (77) M. pinus. Same origins as in (32–38). Scale bars=100 mm, except for (70)=200 mm.
F in Seed-infesting chalcids of the genus Megastigmus Dalman, 1820 (Hymenoptera: Torymidae) native and introduced to the West Palearctic region: taxonomy, host specificity and distribution
F 60–68. Female stigma of Megastigmus seed chalcids. (60) M. rafni; (61) M. rosae, Poland; (62) M. schimitscheki; (63) M. specularis; (64) M. spermotrophus; (65) M. strobilobius; (66) M. suspectus; (67) M. transvaalensis; (68) M. wachtli. Same origins as in (23–31). Scale bars=100 mm.
F in Seed-infesting chalcids of the genus Megastigmus Dalman, 1820 (Hymenoptera: Torymidae) native and introduced to the West Palearctic region: taxonomy, host specificity and distribution
F 97–106. Female ovipositor of Megastigmus seed chalcids. (97) M. pinus; (98) M. rafni; (99) M. rosae, France; (100) M. schimitscheki; (101) M. specularis; (102) M. spermotrophus; (103) M. strobilobius; (104) M. suspectus; (105) M. transvaalensis; (106) M. wachtli. Same origins as in (21–31). Scale bar=20 mm.
F in Seed-infesting chalcids of the genus Megastigmus Dalman, 1820 (Hymenoptera: Torymidae) native and introduced to the West Palearctic region: taxonomy, host specificity and distribution
F 87–96. Female ovipositor of Megastigmus seed chalcids. (87) M. aculeatus; (88) M. amicorum; (89) M. atedius; (90) M. atlanticus; (91) M. bipunctatus; (92) M. brevicaudis; (93) M. milleri; (94) M. nigrovariegatus; (95) M. pictus; (96) M. pinsapinis. Same origins as in (11–20). Scale bar=20 mm.
Data from: Inferences on population history of a seed chalcid wasp: invasion success despite a severe founder effect from an unexpected source population
Most invasive species established in Europe originate from either Asia or North America, but little is currently known about the potential of the Anatolian Peninsula (Asia Minor) and/or the Near East to constitute invasion sources. Mediterranean forests are generally fragile ecosystems that can be threatened by invasive organisms coming from different regions of the Mediterranean Basin, but for which historical data are difficult to gather and the phylogeographic patterns are still poorly understood for most terrestrial organisms. In this study, we characterized the genetic structure of Megastigmus schimitscheki, an invasive seed-feeding insect species originating from the Near East, and elucidated its invasion route in Southeastern France in the mid 1990's. To disentangle the evolutionary history of this introduction, we gathered samples from the main native regions (Taurus Mountains in Turkey, Lebanon and Cyprus) and from the invaded region, that we genotyped using five microsatellite markers and for which we sequenced the mitochondrial Cytochrome Oxidase I gene. We applied a set of population genetic statistics and methods, including approximate Bayesian computation. We proposed a detailed phylogeographic pattern for the Near East populations, and we unambiguously showed that the French invasive populations originated from Cyprus, although the available historical data strongly suggested that Turkey could be the most plausible source area. Interestingly, we could show that the introduced populations were founded from an extremely restricted number of individuals that realized a host switch from Cedrus brevifolia to C. atlantica. Evolutionary hypotheses are discussed to account for this unlikely scenario.
F in Seed-infesting chalcids of the genus Megastigmus Dalman, 1820 (Hymenoptera: Torymidae) native and introduced to the West Palearctic region: taxonomy, host specificity and distribution
F. 2. Lateral view of head, M. pictus X, ex. Larix decidua, Poland. an, anellus; clv, clava;
F in Seed-infesting chalcids of the genus Megastigmus Dalman, 1820 (Hymenoptera: Torymidae) native and introduced to the West Palearctic region: taxonomy, host specificity and distribution
F. 1. Dorsal view of body, Megastigmus amicorum W, ex. Juniperus phoenicea, Portugal.
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