Alessandro Trotter

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Alessandro Trotter (26 July 1874, Udine – 22 July 1967, Vittorio Veneto) was an Italian botanist and entomologist who pioneered in cecidology, the study of plant galls.

Alessandro Trotter was the son-in-law of Pier Andrea Saccardo (1845–1920).

His first work on cecidology dated back to 1897 (when he was 21 yrs old) and he reported 124 galls of which 21 were caused by eriophyid mites. Trotter travelled around Italy between 1899 and 1909 and described 742 galls in 20 papers. At the age of 28 he founded a journal called Marcella in honour of Marcello Malpighi which dealt with cecidology.[1] He later became professor of plant pathology at the University of Naples and wrote more than 400 publications with nearly 110 on plant galls. He described several new species of Cynipidae and Cecidomyiidae some with Jean-Jacques Kieffer.


Partial List

  • Flora Italica Cryptogamica. Pars I: Fungi. Fasc. IV. Uredinales (Genera: Uromyces et Puccinia). 144 pp. (1908).
  • Sylloge Fungorum 23: i-xxxii, 1026 pp (1925).
  • Sylloge Fungorum 24 (1): 1-703 (1926).
  • Sylloge Fungorum 24 (2): 704-1438 (1928).


  1. ^ Bernini, Fabio (2002) Acarid Phylogeny and Evolution: Adaptation in Mites and Ticks. Springer. ISBN 1-4020-0465-6 pp. 7-8
  2. ^ IPNI.  Trotter.


  • Cesare Conci et Roberto Poggi (1996), Iconography of Italian Entomologists, with essential biographical data. Memorie della Società entomologica Italiana, 75: 159-382.