Lenat Consulting Services Inc.

Raleigh, NC, United States

Lenat Consulting Services Inc.

Raleigh, NC, United States

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Fend S.V.,U.S. Geological Survey | Rodriguez P.,University of the Basque Country | Lenat D.R.,Lenat Consulting Services Inc.
Zootaxa | Year: 2015

Uktena riparia n. gen., n. sp. has been collected in hyporheic habitats at several sites in North Carolina, southeastern USA. The genus is defined by unusual characters related to reproductive structures, including the formation of encapsulated spermatophores for sperm transfer and large bundles of genital chaetae, both previously unknown in the Lumbriculidae. The simultaneous occurrence of both spermatophores and spermathecae is rare in the microdrile oligochaetes. Uktena spermatophores appear more similar to those reported in leeches than to those in other microdrile oligochaete families. Possible synapomorphies associating Uktena with the genera Kincaidiana and Guestphalinus include a filiform, ringed proboscis, a forward shift of reproductive organs relative to the usual position in the family, and spermathecae in the atrial segment. The new species adds to the already diverse, endemic lumbriculid fauna of the North Carolina Sandhills ecoregion. Copyright © 2015 Magnolia Press.


PubMed | U.S. Geological Survey, University of the Basque Country and Lenat Consulting Services Inc.
Type: Journal Article | Journal: Zootaxa | Year: 2015

Uktena riparia n. gen., n. sp. has been collected in hyporheic habitats at several sites in North Carolina, southeastern USA. The genus is defined by unusual characters related to reproductive structures, including the formation of encapsulated spermatophores for sperm transfer and large bundles of genital chaetae, both previously unknown in the Lumbriculidae. The simultaneous occurrence of both spermatophores and spermathecae is rare in the microdrile oligochaetes. Uktena spermatophores appear more similar to those reported in leeches than to those in other microdrile oligochaete families. Possible synapomorphies associating Uktena with the genera Kincaidiana and Guestphalinus include a filiform, ringed proboscis, a forward shift of reproductive organs relative to the usual position in the family, and spermathecae in the atrial segment. The new species adds to the already diverse, endemic lumbriculid fauna of the North Carolina Sandhills ecoregion.


PubMed | U.S. Geological Survey, University of the Basque Country and Lenat Consulting Services Inc.
Type: | Journal: ZooKeys | Year: 2014

Three new species of Lumbriculidae were collected from floodplain seeps and small streams in southeastern North America. Some of these habitats are naturally acidic. Sylphellapuccoon gen. n., sp. n. has prosoporous male ducts in X-XI, and spermathecae in XII-XIII. Muscular, spherical atrial ampullae and acuminate penial sheaths distinguish this monotypic new genus from other lumbriculid genera having similar arrangements of reproductive organs. Cookidriluspocosinus sp. n. resembles its two subterranean, Palearctic congeners in the arrangement of reproductive organs, but is easily distinguished by the position of the spermathecal pores in front of the chaetae in X-XIII. Stylodriluscoreyi sp. n. differs from congeners having simple-pointed chaetae and elongate atria primarily by the structure of the male duct and the large clusters of prostate cells. Streams and wetlands of Southeastern USA have a remarkably high diversity of endemic lumbriculids, and these poorly-known invertebrates should be considered in conservation efforts.


Lenat D.R.,Lenat Consulting Services Inc. | Ruiter D.E.,6260 South Grant Street | Parker C.R.,U.S. Geological Survey | Robinson J.L.,University of Tennessee at Knoxville | And 2 more authors.
Southeastern Naturalist | Year: 2010

Information is presented on 348 Trichoptera (caddisfly) species recorded from North Carolina, including 76 new state records. This information includes distribution across 4 ecoregions, occurrence by stream size, and the 1st published North Carolina record for each species.


McCafferty W.P.,Purdue University | Lenat D.R.,Lenat Consulting Services Inc. | Jacobus L.M.,Indiana University Bloomington | Meyer M.D.,Christopher Newport University
Transactions of the American Entomological Society | Year: 2010

An annotated checklist consisting of 300 species is provided for the mayfly fauna of the southeastern United States [Alabama (139 spp.), Arkansas (118 spp.), Florida (77 spp.), Georgia (155 spp.), Kentucky (135 spp.), Louisiana (61 spp.), Mississippi (59 spp.), North Carolina (207 spp.), South Carolina (185 spp.), Tennessee (167 spp.), Virginia (170 spp.), West Virginia (119 spp.)]. The list is based on previously published and newly published collection data. Some 107 supported state records in the region are also provided based on 92 of the species. The Southeast is the richest region in North America in terms of mayfly biodiversity, but the states of Louisiana and Mississippi remain poorly known.


White D.S.,Murray State University | Lenat D.A.,Lenat Consulting Services Inc.
Coleopterists Bulletin | Year: 2015

Stenelmis hollandi White and Lenat, a new species of riffle beetle (Elmidae), is described from the Little River drainage of North Carolina, within the Cape Fear River basin. It may be separated from similar species by the male genitalia, small size, distinct single testaceous vitta on each elytron that does not overlap the umbone, distinctly dilated fifth tarsomere, and a mesotibial ridge in males. Additionally, it has yellowish palpi, antennae, and tarsi. A photograph of the adult along with a photograph of the male genitalia serve to illustrate the defining characters. The discovery of this undescribed species further demonstrates the excellent water quality and the variety of habitats within the Little River drainage.


Fend S.V.,U.S. Geological Survey | Lenat D.R.,Lenat Consulting Services Inc.
Zootaxa | Year: 2010

The first verified records of Rhynchelmis from the southeastern Nearctic represent two new species. Both belong to R. (Rhynchelmoides) (Hrabì) n.comb., which is defined here. Rhynchelmis bolinensis n. sp. resembles other R. (Rhynchelmoides) species with elongate spermathecae, but differs in details of the reproductive structures. Rhynchelmis croatanensis n. sp. is similar in many respects, but the gonads and male and female pores are shifted anteriad by one segment, a character previously unknown within the genus. Pararhynchelmis murdocki n. gen., n. sp. has the spermathecal pores in VIII and IX and male pores in X, and the spermathecae connect to the gut. These characters associate the new species with Rhynchelmis, but the combination of differences in morphology or arrangement of atria, spermathecae, blood vessels and nephridia, and the absence of a proboscis, suggest that it be placed in a related genus. Rhynchelmis bolinensis was collected at several sites in North Carolina, but the other two species are known only from single localities. Copyright © 2010. Magnolia Press.


Fend S.V.,U.S. Geological Survey | Lenat D.R.,Lenat Consulting Services Inc.
Zootaxa | Year: 2012

Three new species of Lumbriculidae from southeastern North America are attributed to Eclipidrilus Eisen. All are small worms (diameter 0.2-0.5 mm), having semi-prosoporous male ducts with the atria in X, and spermathecae in IX. Eclipid-rilus breviatriatus n. sp. and E. microthecus n. sp. have crosshatched atrial musculature, similar to some E. (Eclipidrilus) species, but they differ from congeners in having small, compact spermathecal ampullae. Eclipidrilus macphersonae n. sp. has a single, median atrium and spermatheca. The new species have been collected only in Sandhills and Middle At-lantic Coastal Plain streams of North Carolina. Copyright © 2012 · Magnolia Press.


McCafferty W.P.,Purdue University | Lenat D.R.,Lenat Consulting Services Inc.
Transactions of the American Entomological Society | Year: 2010

A new species of flat-headed mayflies (Heptageniidae) is described as Maccaffertium wudigeum McCafferty and Lenat, n. sp. The species is based on larvae taken from western North Carolina. It is morphologically most similar to some M. mediopunctatum (McDunnough) larvae, but does not possess any of the distinguishing markings associated with the latter and also differs from it in habitat.

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