Ned Strenth - Academia.edu (original) (raw)

Papers by Ned Strenth

Acta zoológica mexicana, Apr 1, 2009

Mex. (n. s.) 25(1):105-122. RESUMEN. En este estudio se caracterizaron las condiciones ecológicas... more Mex. (n. s.) 25(1):105-122. RESUMEN. En este estudio se caracterizaron las condiciones ecológicas en las que se presentaron 77 especies de gastrópodos terrestres en la región oriental de San Luis Potosí, existiendo más especies de moluscos en bosque de encino (44 especies), hojarasca y humus (66), suelos húmedos todo el año (53), precipitaciones de 3000-3500 mm anuales (41) y altitudes de 801-900 m (43). Thysanophora hornii es la de mas amplia distribución en función de los tipos de vegetación, condiciones de humedad, precipitación, tipos de suelo y rango de altitud. Los valores más grandes de diversidad y equitatividad se observaron en el bosque mesófilo de montaña (0.6895) y bosque de encino (0.3512). El mayor valor de dominancia (0.9958) y amplitud ecológica del hábitat (0.3471) se presentó en el matorral xerófilo. Las comunidades de gastrópodos terrestres se encontraron subordinadas ecológicamente a las del bosque tropical caducifolio-subcaducifolio, y a su vez ésta se halla subordinada a la del bosque de encino. El valor de similitud cualitativa más alto se observó entre el bosque tropical caducifolio-subcaducifolio y pastizal-cultivos (0.7462). Entre el bosque espinoso y pastizalcultivos se obtuvo el mayor valor de similitud cuantitativa (0.3646).

Proceedings of the Biological Society of Washington., 2003

... Huglan¿lina singieyana was found to display enzyme polymorphism at 12 of 19 loci examined. ..... more ... Huglan¿lina singieyana was found to display enzyme polymorphism at 12 of 19 loci examined. ... Chiba, S. 1999. Accelerated evolution of land snails Mandarina in the oceanic Bonin Islands: evi-dence from mitochondrial DNA sequences.— Evolution 53:460-471. ...

Proceedings of the Biological Society of Washington, 1994

Palaemonetes hobbsi is described from the headwaters of the Rio Mante near Ciudad Mante in the st... more Palaemonetes hobbsi is described from the headwaters of the Rio Mante near Ciudad Mante in the state of Tamaulipas, Mexico. While this new species is similar to Palaemonetes mexicanus Strenth from the nearby state of San Luis Potosi, it differs with respect to rostral dentition, first maxilliped morphology, and spination of the appendix masculina. It also exhibits a disjunct nonoverlapping range. Standard starch gel electrophoretic comparisons also confirm that this new taxon exhibits biochemical differences that are distinct from P. mexicanus. Resumen.-Se describe una nueva especie de Palaemonetes de agua dulce de Mexico. Esta especie de camaron ocurre en las aguas de cabecera del Rio Mante y Rio Frio cerca de Ciudad Mante en el estado de Tamaulipas. Es similar a Palaemonetes mexicanus Strenth conocida del estado de San Luis Potosi. Se distingue esta especie nueva de la especie P. mexicanus por las diferencias en la denticion del rostro, en la morfologia del primer maxilipedo, en la disposicion de las espinas del appendix masculina, y el analisis de bioquimica.

Southwestern Naturalist, Jun 3, 1977

Because of their somewhat unique adaptations to ephemeral life cycles, those crustaceans comprisi... more Because of their somewhat unique adaptations to ephemeral life cycles, those crustaceans comprising Packard's (1883) Suborder Phyl-lopoda provide interesting subjects for studies of reproductive biology. Abbreviated development, resistant egg stages, and partheno-genesis are ...

Smithsonian contributions to zoology, 1976

Strenth, Ned E. A Review of the Systematics and Zoogeography of the Freshwater Species of Palaemo... more Strenth, Ned E. A Review of the Systematics and Zoogeography of the Freshwater Species of Palaemonetes Heller of North America (Crustacea: Decapoda). Smithsonian Contributions to Zoology, number 228, 27 pages, 6 figures, 1 table, 1976.-Three new species of freshwater Palaemonetes from Texas and Mexico are described. A key to the known North American species is given along with major taxonomic references on each species since the 1952 revision by Holthuis. The subgenus Alaocaris Holthuis, 1949, is synonymized with the subgenus Palaemonetes Holthuis, 1949. As a result of larval studies, it is concluded that the freshwater species of Palaemonetes in at least North America are of monophyletic origin separate from the marine species. These larval studies also support a close relationship to at least one European and one Asian species. Laboratory studies on the freshwater Palaemonetes kadiakensis Rathbun indicate an inability of this species to disperse across wide oceanic stretches. Origin and dispersal of the freshwater Palaemonetes is considered. Zoogeographical distribution of the genus Macrobrachium Bate and its ecological relationship to Palaemonetes as correlated with geological data support a much earlier origin of the genus Palaemonetes than previously recorded in the literature. Several hypotheses are reviewed in an effort to explain the worldwide distribution of freshwater Palaemonetes. The distributional patterns of Palaemonetes and Macrobrachium appear consistent with the theory of continental drift. OFFICIAL PUBLICATION DATE is handstamped in a limited number of initial copies and is recorded in the Institution's annual report, Smithsonian Year. SERIES COVER DESIGN: The coral Montastrea cavernosa (Linnaeus). Library of Congress Cataloging in Publication Data Strenth, Ned E A review of the systematics and zoogeography of the freshwater species of Palaemonetes Heller (Crustacea, Decapoda) of North America.

Three new species of freshwater Palaemonetes from Texas and Mexico are described. A key to the kn... more Three new species of freshwater Palaemonetes from Texas and Mexico are described. A key to the known North American species is given along with major taxonomic references on each species since the 1952 monograph by Holthuis. As a result of larval studies, it is concluded that the freshwater species of Palaemonetes in at least North America are of monophyletic origin separate from the marine species. These larval studies also support a close relationship to at least one of the European species. The subgenus Alaocaris Holthuis, 1949 is synonymized with the subgenus Palaemonetes Holthuis, 1949. Laboratory studies on the freshwater Palaemonetes kadiakensis Rathbun indicate an inability of this species to disperse across wide oceanic stretches. Zoogeographical distribution of the genus Macrobrachium Bate in relationship to Palaemonetes as correlated with geological data support a much earlier origin of the genus than previously recorded in the literature. Several hypotheses are considere...

Un nuevo caracol terrestre, Guillarmodia (Guillarmodia) marcelae n. sp. Correa-Sandoval, Barrient... more Un nuevo caracol terrestre, Guillarmodia (Guillarmodia) marcelae n. sp. Correa-Sandoval, Barrientos -Lozano & Strenth es descrita para las montanas de la Sierra Los Soldados, region del estado de Tamaulipas en el noreste de Mexico. Esta nueva especie difiere de otras especies regionales de Guillarmodia por su tamano pequeno y distintivas estriaciones subsuturales. Se incluye informacion del habitat de la especie y de la distribucion geografica de especies relacionadas

Volume 3 Issue 1 Fall 2015Volume 3 Number 1 of the CRIUS. This journal includes the research of u... more Volume 3 Issue 1 Fall 2015Volume 3 Number 1 of the CRIUS. This journal includes the research of undergraduate students as part of Research & Creative Endeavor SymposiumASU Undergraduate Research Initiativ

American Malacological Bulletin, 1991

ACTA ZOOLÓGICA MEXICANA (N.S.), 2018

Un nuevo caracol terrestre, Guillarmodia (Guillarmodia) marcelae n. sp. Correa-Sandoval, Barrient... more Un nuevo caracol terrestre, Guillarmodia (Guillarmodia) marcelae n. sp. Correa-Sandoval, Barrientos -Lozano & Strenth es descrita para las montañas de la Sierra Los Soldados, región del estado de Tamaulipas en el noreste de México. Esta nueva especie difiere de otras especies regionales de Guillarmodia por su tamaño pequeño y distintivas estriaciones subsuturales. Se incluye información del hábitat de la especie y de la distribución geográfica de especies relacionadas

ACTA ZOOLÓGICA MEXICANA (N.S.), 2007

Se estudiaron (diciembre de 2001 a diciembre de 2004) los gastrópodos terrestres de la región sur... more Se estudiaron (diciembre de 2001 a diciembre de 2004) los gastrópodos terrestres de la región sur del estado Nuevo León. Las muestras fueron obtenidas en 35 localidades, en diferentes tipos de vegetación. Las principales afinidades zoogeográficas son el endemismo de 34 especies o subespecies (40.48% de la malacofauna, valor alto en el noreste de México), la neotropical principalmente y neártica de 27 especies (32.14%) y la distribución panamericana de 13 especies (15.48%). Las familias con mayor número de especies o subespecies endémicas son Spiraxidae y Urocoptidae, ambas con ocho, y Humboldtianidae con cinco. Los mayores valores biogeográficos de la malacofauna terrestre se presentaron en la vegetación de galería y en el bosque de pino. Las mayores similitudes malacofaunísticas se observan entre el matorral submontano y el pastizal cultivado y entre el bosque de pino-encino y la vegetación de galería.

ACTA ZOOLÓGICA MEXICANA (N.S.), 2016

En este estudio se caracterizaron las condiciones ecológicas en las que se presentaron 77 especie... more En este estudio se caracterizaron las condiciones ecológicas en las que se presentaron 77 especies de gastrópodos terrestres en la región oriental de San Luis Potosí, existiendo más especies de moluscos en bosque de encino (44 especies), hojarasca y humus (66), suelos húmedos todo el año (53), precipitaciones de 3000-3500 mm anuales (41) y altitudes de 801-900 m (43). Thysanophora hornii es la de mas amplia distribución en función de los tipos de vegetación, condiciones de humedad, precipitación, tipos de suelo y rango de altitud. Los valores más grandes de diversidad y equitatividad se observaron en el bosque mesófilo de montaña (0.6895) y bosque de encino (0.3512). El mayor valor de dominancia (0.9958) y amplitud ecológica del hábitat (0.3471) se presentó en el matorral xerófilo. Las comunidades de gastrópodos terrestres se encontraron subordinadas ecológicamente a las del bosque tropical caducifolio – subcaducifolio, y a su vez ésta se halla subordinada a la del bosque de encino....

The Southwestern Naturalist, 1977

Because of their somewhat unique adaptations to ephemeral life cycles, those crustaceans comprisi... more Because of their somewhat unique adaptations to ephemeral life cycles, those crustaceans comprising Packard's (1883) Suborder Phyl-lopoda provide interesting subjects for studies of reproductive biology. Abbreviated development, resistant egg stages, and partheno-genesis are ...

Bulletin of Marine Science, 1978

... STRENTH AND BLANKENSHIP: VALID NAME OF APLYSIA ... Dr. J. Rosewater of the Smithsonian Insti-... more ... STRENTH AND BLANKENSHIP: VALID NAME OF APLYSIA ... Dr. J. Rosewater of the Smithsonian Insti-tution and Dr. R. Robertson and Mrs. GS Corey of the Philadelphia Academy of Natural Sciences kindly assisted in locating and providing catalogued specimens from Florida. ...

Palaemonetes hobbsi is described from the headwaters of the Rio Mante near Ciudad Mante in the st... more Palaemonetes hobbsi is described from the headwaters of the Rio Mante near Ciudad Mante in the state of Tamaulipas, Mexico. While this new species is similar to Palaemonetes mexicanus Strenth from the nearby state of San Luis Potosi, it differs with respect to rostral dentition, first maxilliped morphology, and spination of the appendix masculina. It also exhibits a disjunct nonoverlapping range. Standard starch gel electrophoretic comparisons also confirm that this new taxon exhibits biochemical differences that are distinct from P. mexicanus. Resumen.-Se describe una nueva especie de Palaemonetes de agua dulce de Mexico. Esta especie de camaron ocurre en las aguas de cabecera del Rio Mante y Rio Frio cerca de Ciudad Mante en el estado de Tamaulipas. Es similar a Palaemonetes mexicanus Strenth conocida del estado de San Luis Potosi. Se distingue esta especie nueva de la especie P. mexicanus por las diferencias en la denticion del rostro, en la morfologia del primer maxilipedo, en la disposicion de las espinas del appendix masculina, y el analisis de bioquimica.

Hemileuca slosseri inhabits the rolling sand plains of southeastern New Mexico, northwest Texas, ... more Hemileuca slosseri inhabits the rolling sand plains of southeastern New Mexico, northwest Texas, and southwestern Oklahoma, where the larval stages of this species feed exclusively on the leaves of Quercus havardii. Adults emerge in November and immediately complete their egg laying activities. Observations in the field during the fall of 2013 reveal that many of the newly deposited egg rings were positioned in close proximity to existing hatched egg rings left over from the previous year. This study was undertaken to observe the egg laying habits of H. slosseri in Andrews County and determine if there is any correlation between the presence of existing hatched egg rings and the deposition of new eggs. In January 2014, a 12 by 40 meter study area was established SW of Andrews, Texas. All egg rings were mapped as to location, and height above ground as well as the stem diameter of each egg ring was recorded. A total of 134 egg rings were observed on the study plot (91 hatched and 43 ...

PROCEEDINGS-BIOLOGICAL SOCIETY OF …, 2003

... Huglan¿lina singieyana was found to display enzyme polymorphism at 12 of 19 loci examined. ..... more ... Huglan¿lina singieyana was found to display enzyme polymorphism at 12 of 19 loci examined. ... Chiba, S. 1999. Accelerated evolution of land snails Mandarina in the oceanic Bonin Islands: evi-dence from mitochondrial DNA sequences.— Evolution 53:460-471. ...

Acta zoológica mexicana, Apr 1, 2009

Mex. (n. s.) 25(1):105-122. RESUMEN. En este estudio se caracterizaron las condiciones ecológicas... more Mex. (n. s.) 25(1):105-122. RESUMEN. En este estudio se caracterizaron las condiciones ecológicas en las que se presentaron 77 especies de gastrópodos terrestres en la región oriental de San Luis Potosí, existiendo más especies de moluscos en bosque de encino (44 especies), hojarasca y humus (66), suelos húmedos todo el año (53), precipitaciones de 3000-3500 mm anuales (41) y altitudes de 801-900 m (43). Thysanophora hornii es la de mas amplia distribución en función de los tipos de vegetación, condiciones de humedad, precipitación, tipos de suelo y rango de altitud. Los valores más grandes de diversidad y equitatividad se observaron en el bosque mesófilo de montaña (0.6895) y bosque de encino (0.3512). El mayor valor de dominancia (0.9958) y amplitud ecológica del hábitat (0.3471) se presentó en el matorral xerófilo. Las comunidades de gastrópodos terrestres se encontraron subordinadas ecológicamente a las del bosque tropical caducifolio-subcaducifolio, y a su vez ésta se halla subordinada a la del bosque de encino. El valor de similitud cualitativa más alto se observó entre el bosque tropical caducifolio-subcaducifolio y pastizal-cultivos (0.7462). Entre el bosque espinoso y pastizalcultivos se obtuvo el mayor valor de similitud cuantitativa (0.3646).

Proceedings of the Biological Society of Washington., 2003

... Huglan¿lina singieyana was found to display enzyme polymorphism at 12 of 19 loci examined. ..... more ... Huglan¿lina singieyana was found to display enzyme polymorphism at 12 of 19 loci examined. ... Chiba, S. 1999. Accelerated evolution of land snails Mandarina in the oceanic Bonin Islands: evi-dence from mitochondrial DNA sequences.— Evolution 53:460-471. ...

Proceedings of the Biological Society of Washington, 1994

Palaemonetes hobbsi is described from the headwaters of the Rio Mante near Ciudad Mante in the st... more Palaemonetes hobbsi is described from the headwaters of the Rio Mante near Ciudad Mante in the state of Tamaulipas, Mexico. While this new species is similar to Palaemonetes mexicanus Strenth from the nearby state of San Luis Potosi, it differs with respect to rostral dentition, first maxilliped morphology, and spination of the appendix masculina. It also exhibits a disjunct nonoverlapping range. Standard starch gel electrophoretic comparisons also confirm that this new taxon exhibits biochemical differences that are distinct from P. mexicanus. Resumen.-Se describe una nueva especie de Palaemonetes de agua dulce de Mexico. Esta especie de camaron ocurre en las aguas de cabecera del Rio Mante y Rio Frio cerca de Ciudad Mante en el estado de Tamaulipas. Es similar a Palaemonetes mexicanus Strenth conocida del estado de San Luis Potosi. Se distingue esta especie nueva de la especie P. mexicanus por las diferencias en la denticion del rostro, en la morfologia del primer maxilipedo, en la disposicion de las espinas del appendix masculina, y el analisis de bioquimica.

Southwestern Naturalist, Jun 3, 1977

Because of their somewhat unique adaptations to ephemeral life cycles, those crustaceans comprisi... more Because of their somewhat unique adaptations to ephemeral life cycles, those crustaceans comprising Packard's (1883) Suborder Phyl-lopoda provide interesting subjects for studies of reproductive biology. Abbreviated development, resistant egg stages, and partheno-genesis are ...

Smithsonian contributions to zoology, 1976

Strenth, Ned E. A Review of the Systematics and Zoogeography of the Freshwater Species of Palaemo... more Strenth, Ned E. A Review of the Systematics and Zoogeography of the Freshwater Species of Palaemonetes Heller of North America (Crustacea: Decapoda). Smithsonian Contributions to Zoology, number 228, 27 pages, 6 figures, 1 table, 1976.-Three new species of freshwater Palaemonetes from Texas and Mexico are described. A key to the known North American species is given along with major taxonomic references on each species since the 1952 revision by Holthuis. The subgenus Alaocaris Holthuis, 1949, is synonymized with the subgenus Palaemonetes Holthuis, 1949. As a result of larval studies, it is concluded that the freshwater species of Palaemonetes in at least North America are of monophyletic origin separate from the marine species. These larval studies also support a close relationship to at least one European and one Asian species. Laboratory studies on the freshwater Palaemonetes kadiakensis Rathbun indicate an inability of this species to disperse across wide oceanic stretches. Origin and dispersal of the freshwater Palaemonetes is considered. Zoogeographical distribution of the genus Macrobrachium Bate and its ecological relationship to Palaemonetes as correlated with geological data support a much earlier origin of the genus Palaemonetes than previously recorded in the literature. Several hypotheses are reviewed in an effort to explain the worldwide distribution of freshwater Palaemonetes. The distributional patterns of Palaemonetes and Macrobrachium appear consistent with the theory of continental drift. OFFICIAL PUBLICATION DATE is handstamped in a limited number of initial copies and is recorded in the Institution's annual report, Smithsonian Year. SERIES COVER DESIGN: The coral Montastrea cavernosa (Linnaeus). Library of Congress Cataloging in Publication Data Strenth, Ned E A review of the systematics and zoogeography of the freshwater species of Palaemonetes Heller (Crustacea, Decapoda) of North America.

Three new species of freshwater Palaemonetes from Texas and Mexico are described. A key to the kn... more Three new species of freshwater Palaemonetes from Texas and Mexico are described. A key to the known North American species is given along with major taxonomic references on each species since the 1952 monograph by Holthuis. As a result of larval studies, it is concluded that the freshwater species of Palaemonetes in at least North America are of monophyletic origin separate from the marine species. These larval studies also support a close relationship to at least one of the European species. The subgenus Alaocaris Holthuis, 1949 is synonymized with the subgenus Palaemonetes Holthuis, 1949. Laboratory studies on the freshwater Palaemonetes kadiakensis Rathbun indicate an inability of this species to disperse across wide oceanic stretches. Zoogeographical distribution of the genus Macrobrachium Bate in relationship to Palaemonetes as correlated with geological data support a much earlier origin of the genus than previously recorded in the literature. Several hypotheses are considere...

Un nuevo caracol terrestre, Guillarmodia (Guillarmodia) marcelae n. sp. Correa-Sandoval, Barrient... more Un nuevo caracol terrestre, Guillarmodia (Guillarmodia) marcelae n. sp. Correa-Sandoval, Barrientos -Lozano & Strenth es descrita para las montanas de la Sierra Los Soldados, region del estado de Tamaulipas en el noreste de Mexico. Esta nueva especie difiere de otras especies regionales de Guillarmodia por su tamano pequeno y distintivas estriaciones subsuturales. Se incluye informacion del habitat de la especie y de la distribucion geografica de especies relacionadas

Volume 3 Issue 1 Fall 2015Volume 3 Number 1 of the CRIUS. This journal includes the research of u... more Volume 3 Issue 1 Fall 2015Volume 3 Number 1 of the CRIUS. This journal includes the research of undergraduate students as part of Research & Creative Endeavor SymposiumASU Undergraduate Research Initiativ

American Malacological Bulletin, 1991

ACTA ZOOLÓGICA MEXICANA (N.S.), 2018

Un nuevo caracol terrestre, Guillarmodia (Guillarmodia) marcelae n. sp. Correa-Sandoval, Barrient... more Un nuevo caracol terrestre, Guillarmodia (Guillarmodia) marcelae n. sp. Correa-Sandoval, Barrientos -Lozano & Strenth es descrita para las montañas de la Sierra Los Soldados, región del estado de Tamaulipas en el noreste de México. Esta nueva especie difiere de otras especies regionales de Guillarmodia por su tamaño pequeño y distintivas estriaciones subsuturales. Se incluye información del hábitat de la especie y de la distribución geográfica de especies relacionadas

ACTA ZOOLÓGICA MEXICANA (N.S.), 2007

Se estudiaron (diciembre de 2001 a diciembre de 2004) los gastrópodos terrestres de la región sur... more Se estudiaron (diciembre de 2001 a diciembre de 2004) los gastrópodos terrestres de la región sur del estado Nuevo León. Las muestras fueron obtenidas en 35 localidades, en diferentes tipos de vegetación. Las principales afinidades zoogeográficas son el endemismo de 34 especies o subespecies (40.48% de la malacofauna, valor alto en el noreste de México), la neotropical principalmente y neártica de 27 especies (32.14%) y la distribución panamericana de 13 especies (15.48%). Las familias con mayor número de especies o subespecies endémicas son Spiraxidae y Urocoptidae, ambas con ocho, y Humboldtianidae con cinco. Los mayores valores biogeográficos de la malacofauna terrestre se presentaron en la vegetación de galería y en el bosque de pino. Las mayores similitudes malacofaunísticas se observan entre el matorral submontano y el pastizal cultivado y entre el bosque de pino-encino y la vegetación de galería.

ACTA ZOOLÓGICA MEXICANA (N.S.), 2016

En este estudio se caracterizaron las condiciones ecológicas en las que se presentaron 77 especie... more En este estudio se caracterizaron las condiciones ecológicas en las que se presentaron 77 especies de gastrópodos terrestres en la región oriental de San Luis Potosí, existiendo más especies de moluscos en bosque de encino (44 especies), hojarasca y humus (66), suelos húmedos todo el año (53), precipitaciones de 3000-3500 mm anuales (41) y altitudes de 801-900 m (43). Thysanophora hornii es la de mas amplia distribución en función de los tipos de vegetación, condiciones de humedad, precipitación, tipos de suelo y rango de altitud. Los valores más grandes de diversidad y equitatividad se observaron en el bosque mesófilo de montaña (0.6895) y bosque de encino (0.3512). El mayor valor de dominancia (0.9958) y amplitud ecológica del hábitat (0.3471) se presentó en el matorral xerófilo. Las comunidades de gastrópodos terrestres se encontraron subordinadas ecológicamente a las del bosque tropical caducifolio – subcaducifolio, y a su vez ésta se halla subordinada a la del bosque de encino....

The Southwestern Naturalist, 1977

Because of their somewhat unique adaptations to ephemeral life cycles, those crustaceans comprisi... more Because of their somewhat unique adaptations to ephemeral life cycles, those crustaceans comprising Packard's (1883) Suborder Phyl-lopoda provide interesting subjects for studies of reproductive biology. Abbreviated development, resistant egg stages, and partheno-genesis are ...

Bulletin of Marine Science, 1978

... STRENTH AND BLANKENSHIP: VALID NAME OF APLYSIA ... Dr. J. Rosewater of the Smithsonian Insti-... more ... STRENTH AND BLANKENSHIP: VALID NAME OF APLYSIA ... Dr. J. Rosewater of the Smithsonian Insti-tution and Dr. R. Robertson and Mrs. GS Corey of the Philadelphia Academy of Natural Sciences kindly assisted in locating and providing catalogued specimens from Florida. ...

Palaemonetes hobbsi is described from the headwaters of the Rio Mante near Ciudad Mante in the st... more Palaemonetes hobbsi is described from the headwaters of the Rio Mante near Ciudad Mante in the state of Tamaulipas, Mexico. While this new species is similar to Palaemonetes mexicanus Strenth from the nearby state of San Luis Potosi, it differs with respect to rostral dentition, first maxilliped morphology, and spination of the appendix masculina. It also exhibits a disjunct nonoverlapping range. Standard starch gel electrophoretic comparisons also confirm that this new taxon exhibits biochemical differences that are distinct from P. mexicanus. Resumen.-Se describe una nueva especie de Palaemonetes de agua dulce de Mexico. Esta especie de camaron ocurre en las aguas de cabecera del Rio Mante y Rio Frio cerca de Ciudad Mante en el estado de Tamaulipas. Es similar a Palaemonetes mexicanus Strenth conocida del estado de San Luis Potosi. Se distingue esta especie nueva de la especie P. mexicanus por las diferencias en la denticion del rostro, en la morfologia del primer maxilipedo, en la disposicion de las espinas del appendix masculina, y el analisis de bioquimica.

Hemileuca slosseri inhabits the rolling sand plains of southeastern New Mexico, northwest Texas, ... more Hemileuca slosseri inhabits the rolling sand plains of southeastern New Mexico, northwest Texas, and southwestern Oklahoma, where the larval stages of this species feed exclusively on the leaves of Quercus havardii. Adults emerge in November and immediately complete their egg laying activities. Observations in the field during the fall of 2013 reveal that many of the newly deposited egg rings were positioned in close proximity to existing hatched egg rings left over from the previous year. This study was undertaken to observe the egg laying habits of H. slosseri in Andrews County and determine if there is any correlation between the presence of existing hatched egg rings and the deposition of new eggs. In January 2014, a 12 by 40 meter study area was established SW of Andrews, Texas. All egg rings were mapped as to location, and height above ground as well as the stem diameter of each egg ring was recorded. A total of 134 egg rings were observed on the study plot (91 hatched and 43 ...

PROCEEDINGS-BIOLOGICAL SOCIETY OF …, 2003

... Huglan¿lina singieyana was found to display enzyme polymorphism at 12 of 19 loci examined. ..... more ... Huglan¿lina singieyana was found to display enzyme polymorphism at 12 of 19 loci examined. ... Chiba, S. 1999. Accelerated evolution of land snails Mandarina in the oceanic Bonin Islands: evi-dence from mitochondrial DNA sequences.— Evolution 53:460-471. ...