different between syntype vs lactotype

English

Etymology

syn- +? -type

Noun

syntype (plural syntypes)

1. (taxonomy) Any one of two or more specimens specified in the description of a species (or lower-order taxon), where no specimen has been designated as holotype.
   • 1965 September, John E. Randall, A Redescription of Sparisoma Atomarium (Poey), a Valid West Indian Parrotfish, Notulae Naturae, Academy of Natural Sciences, page 7,

     Noting two syntypes of hoplomystax with 1 instead of 2 midventral scales posterior to the origin of the pelvics, and the unusual color of S. abbotti, Dr. Bohlke kindly sent these fishes on loan.

   • 1999, Raina L. Takumi, A Systematic Review of the Ectemnius (Hymenoptera: Sphecidae) of Hawaii, University of California Publications in Entomology, Volume 118, University of California Press, page 49,

     Of the specimens examined, 38 (20?, 18?) were collected by Perkins prior to 1899 and are possible syntypes.

   • 2000, Jane B. Walker, James E. Keirans, Ivan G. Horak, The Genus Rhipicephalus (Acari, Ixodidae): A Guide to the Brown Ticks of the World, Cambridge University Press, page 26,

     One ? syntype is in the Zoological Museum, Berlin [ZMB 17714] – see Moritz & Fischer (1981).

Usage notes

• One of the syntypes may, subsequent to the original research, be designated to serve as lectotype in place of the missing holotype.

See also

• holotype
• lectotype
• paratype