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Articles 391 - 420 of 444
Full-Text Articles in Entomology
Special Adaptations Of Orb Weavers And Prey, Peggy Rae Dorris
Special Adaptations Of Orb Weavers And Prey, Peggy Rae Dorris
Journal of the Arkansas Academy of Science
Orb weaving spiders have devised both webs and special devices for capturing prey. The prey have also evolved mechanisms for eluding spiders and for living with them. Some of the mechanisms involved are discussed in this paper.
Additional Records Of Distribution And Hosts For The Bat Bug, Cimex Pilosellus In Arkansas, Tim W. Steward, V. Rick Mcdaniel, Daniel R. England
Additional Records Of Distribution And Hosts For The Bat Bug, Cimex Pilosellus In Arkansas, Tim W. Steward, V. Rick Mcdaniel, Daniel R. England
Journal of the Arkansas Academy of Science
No abstract provided.
Synopsis Of The Hydrometridae Of Arkansas, George L. Harp
Synopsis Of The Hydrometridae Of Arkansas, George L. Harp
Journal of the Arkansas Academy of Science
No abstract provided.
Synopsis Of The Nepidae Of Arkansas, George L. Harp
Synopsis Of The Nepidae Of Arkansas, George L. Harp
Journal of the Arkansas Academy of Science
No abstract provided.
Further Distributional Records For Arkansas Anisoptera, George L. Harp, John D. Rickett
Further Distributional Records For Arkansas Anisoptera, George L. Harp, John D. Rickett
Journal of the Arkansas Academy of Science
No abstract provided.
Dytiscidae From Randolph County, Arkansas, Mark A. Pippenger, George L. Harp
Dytiscidae From Randolph County, Arkansas, Mark A. Pippenger, George L. Harp
Journal of the Arkansas Academy of Science
No abstract provided.
Checklist Of The Sphinx Moths Of Arkansas, Leo J. Paulissen
Checklist Of The Sphinx Moths Of Arkansas, Leo J. Paulissen
Journal of the Arkansas Academy of Science
No abstract provided.
Dragonflies Of (Anisoptera) Arkansas, George L. Harp, John D. Rickett
Dragonflies Of (Anisoptera) Arkansas, George L. Harp, John D. Rickett
Journal of the Arkansas Academy of Science
Previous publications have recorded 69 species of dragonflies for Arkansas. Three of these are deleted, but state records for 21 new species are reported herein, bringing the list to 87 species. Based on lists from adjacent states, an additional nine species are listed as probably occurring in Arkansas. County records are given for both naiads and adults of each species, as well as first and last capture dates for adults. Specific location and capture date are given for new state records when such data are available. The most species (39) have been reported from Washington County. Twenty-nine counties list from …
Update Of Arkansas Odonata (Anisoptera), John D. Rickett
Update Of Arkansas Odonata (Anisoptera), John D. Rickett
Journal of the Arkansas Academy of Science
Seventy-five species of dragonflies have been reported in Arkansas. The present study provides 43 species; records of the other 32 are drawn from the literature and personal communication with individuals. A new species, Gomphus ozarkensis, described from western Arkansas in 1975 on the basis of minimal data emphasizes the need for extensive work in this area. Opportunities to collect and identify additional species are discussed.
Checklist Of The Coccinellidae Of Arkansas, E. Phil Rouse, Joan B. Chapin
Checklist Of The Coccinellidae Of Arkansas, E. Phil Rouse, Joan B. Chapin
Journal of the Arkansas Academy of Science
A checklist of 49 species of Coccinellidae in Arkansas is updated by the inclusion of species from the reference collection of the University of Arkansas and the collection in the Louisiana State University. This list extends the range of eight species. Distribution, ecological data if known, and references for their identification are included.
Arkansas Butterflies And Skippers, Leo J. Paulissen
Arkansas Butterflies And Skippers, Leo J. Paulissen
Journal of the Arkansas Academy of Science
Since 1955 the writer has been compiling information on Arkansas butterflies and skippers. A list of species is presented from data obtained from personal collecting, extensive contacts with contemporary collectors, and a concerted literature search. A total of 151 species are listed on a chart which also shows from which of five designated areas in the state each species has been reported.
Somatic Pairing In Drosophila Virilis Mitosis, William C. Guest
Somatic Pairing In Drosophila Virilis Mitosis, William C. Guest
Journal of the Arkansas Academy of Science
In neuroblast cells homologous chromosomes tend to pair during prophase of mitosis. Heterochromatic elements of homologous chromosomes are widely separated in very early prophase, at which time the euchromatin is poorly stained. Pairing is intimate for euchromatic portions of chromosomes in early and middle prophase with chiasmata frequently present. Homologous chromosomes most commonly lie side-by-side in late prophase and metaphase. Statistical data are presented to show the frequency of intimate pairing in prophase and side by side pairing in metaphase.
Effects Of Mosquito Control Chemicals On Aquatic Fauna, J. L. Lancaster Jr., M. V. Meisch
Effects Of Mosquito Control Chemicals On Aquatic Fauna, J. L. Lancaster Jr., M. V. Meisch
Arkansas Water Resources Center Technical Reports
No mosquito abatement districts have ever been organized in Arkansas. Mosquito control efforts have been largely adulticiding operations by either aerial application or ground thermal fogging machines. Practically no chemical applications have been directed at the larval stage in residual water in ditches and depressions from which adult populations arise. Some larviciding with ethyl parathion has been done in ricefields. Although the treatment is very effective in mosquito reduction, voluntary treatment has not been completely successful. Because relatively little insecticide has been used as a larvicide in Arkansas, it was possible to evaluate the effect of recommended larvicides on non-target …
Diapause In The Boll Weevil, Anthonontus Grandis Boheman, As Related To Fruiting Activity In The Cotton Plant, F. L. Carter, Jacob R. Phillips
Diapause In The Boll Weevil, Anthonontus Grandis Boheman, As Related To Fruiting Activity In The Cotton Plant, F. L. Carter, Jacob R. Phillips
Journal of the Arkansas Academy of Science
Studies in Arkansas show that boll weevil diapause is related to changes in fruiting activity of the cotton plant. Generally, when larval development took place while fruiting levels were increasing or being held at a high level, diapause in resulting adults was low (0-20%). Diapause was approximately 20-50% when larval development coincided with decreasing fruiting levels, and was 50-100% as true cut-out approached. Regrowth cotton generally lowered diapause incidence and as fruiting levels decreased, diapause increased. Therefore, the boll weevil not only responds to short photoperiods that are characteristic during the fall in the temperate zone, but also may respond …
Respiration Rates Of Two Midge Species At Different Temperatures, George L. Harp, Robert S. Campbell
Respiration Rates Of Two Midge Species At Different Temperatures, George L. Harp, Robert S. Campbell
Journal of the Arkansas Academy of Science
Respiration values for Chironomus n. sp. ranged from 0.11 mm³ O₂ /mg/hr at 5C to 0.44 mm³ O₂. /gm/hr at 25C. The range for Chaoborus punctipennis was from 0.15 mm³ O₂ /mg/hr at 5C to 0.56 mm³ O₂ /mg/hr at 25C. These low respiratory rates allow the two species to withstand low oxygen tensions for extended periods of time. Reflecting this ability, both species attained their greatest numerical and biomass values in the profundal regions of three strip-mine lakes whose lower waters become oxygen depleted during thermal stratification.
Chrysomelidae Of Arkansas, E. Phil Rouse, L. N. Medvedev
Chrysomelidae Of Arkansas, E. Phil Rouse, L. N. Medvedev
Journal of the Arkansas Academy of Science
A list of Chrysomelidae of Arkansas is brought up to date by inclusion of species in the reference collection in the University of Arkansas, the collection in the Zoological Institute of Leningrad, and the private collection of L. Medvedev, as well as those reported in the literature. The list consists of 232 species, subspecies, and varieties and the ecological data where known. One new species and one new variety are included.
Relative Abundance, Seasonal Distribution And Taxonomy Of Sphingidae Of Northeast Arkansas, Charles L. Selman, Harvey E. Barton
Relative Abundance, Seasonal Distribution And Taxonomy Of Sphingidae Of Northeast Arkansas, Charles L. Selman, Harvey E. Barton
Journal of the Arkansas Academy of Science
A total of 38 species of sphingids, with keys and descriptions, are reported from Northeast Arkansas. Graphs and tables are presented to show relative abundance and seasonal distribution. Drawings of genitalia, fore tibiae, and forewings, as well as photographs of species in the key are included.
Notes On The Habitat And Distribution Of The Odonata Of Franklin County, Arkansas, Jim Houston
Notes On The Habitat And Distribution Of The Odonata Of Franklin County, Arkansas, Jim Houston
Journal of the Arkansas Academy of Science
No abstract provided.
Butterflies Of Arkansas Family Nymphalidae, E. Phil Rouse
Butterflies Of Arkansas Family Nymphalidae, E. Phil Rouse
Journal of the Arkansas Academy of Science
No abstract provided.
Observation On The Impact Of Certain Insecticides On Spider Populations In A Cotton Field, Peggy Rae Dorris
Observation On The Impact Of Certain Insecticides On Spider Populations In A Cotton Field, Peggy Rae Dorris
Journal of the Arkansas Academy of Science
No abstract provided.
Impact Of Resistance To Pesticides On Cotton Insect Problems In Arkansas, Charles Lincoln, Jacob R. Phillips
Impact Of Resistance To Pesticides On Cotton Insect Problems In Arkansas, Charles Lincoln, Jacob R. Phillips
Journal of the Arkansas Academy of Science
No abstract provided.
Addition To The List Of Spiders Collected In Clark County, Arkansas, Peggy Rae Dorris
Addition To The List Of Spiders Collected In Clark County, Arkansas, Peggy Rae Dorris
Journal of the Arkansas Academy of Science
No abstract provided.
Pieridae Of Arkansas, E. Phil Rouse
Pieridae Of Arkansas, E. Phil Rouse
Journal of the Arkansas Academy of Science
No abstract provided.
Fossil Phylloxerid Plant Galls From The Lower Eocene, Eugene B. Wittlake
Fossil Phylloxerid Plant Galls From The Lower Eocene, Eugene B. Wittlake
Journal of the Arkansas Academy of Science
No abstract provided.
Spiders Collected From Mud-Dauber Nests In Clark County, Arkansas, Peggy Rae Dorris
Spiders Collected From Mud-Dauber Nests In Clark County, Arkansas, Peggy Rae Dorris
Journal of the Arkansas Academy of Science
No abstract provided.
Preliminary Study Of The Spiders Of Clark County Arkansas Compared With A Five Year Study Of Mississippi Spiders, Peggy Rae Dorris
Preliminary Study Of The Spiders Of Clark County Arkansas Compared With A Five Year Study Of Mississippi Spiders, Peggy Rae Dorris
Journal of the Arkansas Academy of Science
No abstract provided.
Satyrs And Wood Nymphs Of Arkansas, E. Phil Rouse
Satyrs And Wood Nymphs Of Arkansas, E. Phil Rouse
Journal of the Arkansas Academy of Science
No abstract provided.
The Problem Of Insect Identification And The University Of Arkansas Reference Collection, E. Phil Rouse
The Problem Of Insect Identification And The University Of Arkansas Reference Collection, E. Phil Rouse
Journal of the Arkansas Academy of Science
No abstract provided.
Life History And Predatory Importance Of The Striped Lynx Spider (Araneida: Oxyopidae), W. H. Whitcomb, Ruth Robinson Eason
Life History And Predatory Importance Of The Striped Lynx Spider (Araneida: Oxyopidae), W. H. Whitcomb, Ruth Robinson Eason
Journal of the Arkansas Academy of Science
No abstract provided.
Ground Beetles Of The Genus Lebia Latreille In Arkansas (Coleoptera: Carabidae): Ecology And Geographical Distribution, R. Hemenway, W. H. Whitcomb
Ground Beetles Of The Genus Lebia Latreille In Arkansas (Coleoptera: Carabidae): Ecology And Geographical Distribution, R. Hemenway, W. H. Whitcomb
Journal of the Arkansas Academy of Science
No abstract provided.