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Lipmanella bombus

New comment/discussion

Revised Benson (1966) taxonomy
Richard N. Benson (03/02/2004)
In 2003, Richard N. Benson and Kjell Bjørklund revised the taxonomy of the Gulf of California radiolarian species to conform to modern usage. Some of the names of Benson (1966 and 1983) were changed accordingly. See synonymy for previously used names for this taxon.

Petrushevskaya’s (1971, p. 220, fig. 101, I-VII) drawings of Lipmanella bombus are identical with Gulf of California specimens except figs. I, III, IV?, and VII which apparently show the mouth of abdomen closed by a lattice. Haeckel (1887, p. 1325, pl. 71, fig. 10) describes the mouth of the abdomen of Dictyoceras bombus as restricted but not closed, and his illustration indicates this. Boltovskoy (1998, fig. 15.133) also shows L. bombus with the abdomen mouth apparently restricted or closed. All of these illustrations, however, show a flat, subtriangular latticed portion of the thorax between the branches of each keel, a feature, along with the presence of three, wing-like basal spines, is characteristic of the species.

Haeckel’s (1887, p. 1320, pl. 71, fig. 1) illustration of Pterocorys rhinoceros closely resembles the Gulf of California species but has two apical horns.

Dumitricǎ (1972, DSDP Leg 13, p. 840, pl. 25, figs. 3-5) describes Lipmanella tribranchiata as a new species. His description matches that of the Gulf of California species, except that his drawn figures show more irregular thoracic keels, and the thorax and abdomen have an additional external spongy network. These features may be intraspecific variations. His drawings also show the mouth of the irregularly shaped abdomen as open.



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