scholarly journals Thalassic Rotifers from the United States: Descriptions of Two New Species and Notes on the Effect of Salinity and Ecosystem on Biodiversity

Diversity ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 28 ◽  
Author(s):  
Francesca Leasi ◽  
Willem H. De Smet
Keyword(s):  
United States ◽  
New Species ◽  
The United States ◽  
Species Level ◽  
Small Species ◽  
Comprehensive Review ◽  
Fundamental Information ◽  
Two New Species ◽  
Nearctic Region ◽  
The U.S

This study shows the results of a rotifer faunistic survey in thalassic waters from 26 sites located in northeastern U.S. states and one in California. A total of 44 taxa belonging to 21 genera and 14 families were identified, in addition to a group of unidentifiable bdelloids. Of the fully identified species, 17 are the first thalassic records for the U.S., including Encentrum melonei sp. nov. and Synchaeta grossa sp. nov., which are new to science, and Colurella unicauda Eriksen, 1968, which is new to the Nearctic region. Moreover, a refined description of Encentrum rousseleti (Lie-Pettersen, 1905) is presented. During the survey, we characterized samples by different salinity values and ecosystems and compared species composition across communities to test for possible ecological correlations. Results indicate that both salinities and ecosystems are a significant predictor of rotifer diversity, supporting that biodiversity estimates of small species provide fundamental information for biomonitoring. Finally, we provide a comprehensive review of the diversity and distribution of thalassic rotifers in the United States. The results of the present study increase the thalassic rotifer record for the U.S. from about 105 (87 at species level) to 124 (106 at species level) taxa.

Two New Species of Troglobitic Asellids from the United States

1972 ◽  
Vol 87 (1) ◽  
pp. 245
Author(s):  
Laurence E. Fleming ◽  
Harrison R. Steeves III
Keyword(s):  
United States ◽  
New Species ◽  
The United States ◽  
Two New Species

Glenn Robert Webb (1918–1999), his molluscan taxa,and his journal Gastropodia (1952–1994)

Zootaxa ◽  
2007 ◽  
Vol 1589 (1) ◽  
pp. 1-21
Author(s):  
ALAN R. KABAT ◽  
RICHARD E. PETIT
Keyword(s):  
United States ◽  
New Species ◽  
The United States ◽  
Species Level ◽  
Original Research ◽  
Type Specimens ◽  
Prolific Author ◽  
Family Level ◽  
Research Collection ◽  
Complete Bibliography

Glenn Robert Webb (1918–1999) was a prolific author on the reproductive biology of the terrestrial pulmonates (Mollusca) of the United States. Webb published almost 110 papers, notes and abstracts, many containing detailed descriptions of the functional morphology and reproduction of these gastropods, which remain of value in resolving their phylogeny. Webb described two family-level names (both still considered valid), ten genus-level names (at least seven remain valid), and ten species-level names, all for terrestrial pulmonates. Webb also edited and published the journal Gastropodia, which appeared in thirteen issues, from 1952–1994, and contained extensive original research on the terrestrial pulmonates. Several other malacologists, notably Leslie Hubricht, also published articles and described new species in Gastropodia. This paper provides a biography of Webb, a complete bibliography of his publications, and a list of his taxa, along with a list of other authors’ publications and new taxa in Gastropodia. Webb’s research collection, including some type specimens, and his notebooks, are now housed in the Field Museum of Natural History, Chicago.

Some Synonymy and New Combinations in Chalcidoidea (Hymenoptera)

1951 ◽  
Vol 83 (7) ◽  
pp. 170-176 ◽  
Author(s):  
A. B. Gahan
Keyword(s):  
United States ◽  
North American ◽  
Great Part ◽  
The United States ◽  
National Museum ◽  
New Combinations ◽  
Department Of Agriculture ◽  
United States National Museum ◽  
Nearctic Region ◽  
The U.S

At the time of my retirement on December 31, 1950, a number of notes on synonymy and generic transfers had accumulated. Many of these are thought worthy of publication and this paper is made up of a number of them. Those included notes which deal with Nearctic forms will clarify the treatment of certlin genera and species in the catalog of North American Hymenoptera, now in process of publication by the U.S. Department of Agiculture, the Chalcidoidea section of which catalog has assembled and edited by O. Peck of the Canadian Department of Agriculture but which is based in great part upon the classification and arrangement of the collection in the United States National Museum. The catalog will probably appear in print before this paper does. Several notes dealing with forms not known to occur in the Nearctic region, hence not appearing in the catalog, are also included.

Sign in / Sign up

Export Citation Format

Share Document