STUDIES ON THE GENUS KALICEPHALUS (NEMATODA: DIAPHANOCEPHALIDAE): I. ON THE LIFE HISTORIES OF THE NORTH AMERICAN SPECIES K. PARVUS, K. AGKISTRODONTIS, AND K. RECTIPHILUS

1956 ◽  
Vol 34 (5) ◽  
pp. 425-452 ◽  
Author(s):  
G. A. Schad
Keyword(s):  
North American ◽  
Life Histories ◽  
Skin Penetration ◽  
North American Species ◽  
Rate Of Development ◽  
The North ◽  
Third Stage

The life histories of Kalicephalus parvus, K. agkistrodontis, and K. rectiphilus were investigated experimentally. Differences between the three species are noted in histotropism and rate of development. The parasitic third stage of K. parvus is given special attention, as is the development of its genital and spicular primordia. Infection per os was successful in all three species. Skin penetration may also occur. The mode of infection in nature is discussed.

The Classification of Larval Tabanidae

1964 ◽  
Vol 96 (1-2) ◽  
pp. 159-159
Author(s):  
H. J. Teskey
Keyword(s):  
Life History ◽  
North American ◽  
Life Histories ◽  
North American Species ◽  
Immature Stages ◽  
Larval Habitats ◽  
The North

Relatively little is known of the life history, ecology and behaviour of most species of Tabanidae. Knowledge of their immature stages is particularly deficient. The larvae of only 46, or about ⅛, of the North American species have been described and many of these descriptions are inadequate. The present research was initiated in 1960 to describe and classify tabanid larvae and to contribute information on larval habitats and life histories.

The North American Species in Group VII of Ips De Geer (Coleoptera: Scolytidae)

1965 ◽  
Vol 97 (2) ◽  
pp. 193-198 ◽  
Author(s):  
G. R. Hopping
Keyword(s):  
United States ◽  
New Species ◽  
North American ◽  
North American Species ◽  
The North ◽  
Northern United States

AbstractGroup VII of North American Ips contains I. thomasi, new species, I. borealis Swaine and I. swainei R. Hopping. They are less than 4.0 mm. long and females have the front of the head or at least the vertex smooth and shining, impunctate, or with very fine sparse punctures; males are more coarsely granulate-punctate on the frons. The species are described and a key is given. All breed in Picea in Canada and northern United States.

Synopsis of the North American Species of Xylaria and Poronia (Continued)

1887 ◽  
Vol 3 (10) ◽  
pp. 109 ◽  
Author(s):  
J. B. Ellis ◽  
B. M. Everhart
Keyword(s):  
North American ◽  
North American Species ◽  
The North

A SYNOPSIS OF THE NORTH AMERICAN SPECIES OF SYNDIPNUS (HYMEN., ICHNEUMONIDAE)

1940 ◽  
Vol 72 (7) ◽  
pp. 135-145 ◽  
Author(s):  
G. Stuart Walley
Keyword(s):  
United States ◽  
North American ◽  
The United States ◽  
North American Species ◽  
National Museum ◽  
United States National Museum ◽  
The North

As noted below the two North American species described in Syndipnus by workers appear to belong in other genrra. In Europe the gunus is represented by nearly a score of species and has been reviewed in recent years by two writers (1, 2). North American collections contain very few representatives of the genus; after combining the material in the National Collection with that from the United States National Museum, the latter kindly loaned to me by Mr. R. A. Cushman, only thirty-seven specimens are available for study.

scholarly journals THE NORTH AMERICAN SPECIES OF MAMESTRA, Ochs.

1881 ◽  
Vol 13 (6) ◽  
pp. 126-130
Author(s):  
A. R. Grote
Keyword(s):  
North American ◽  
North American Species ◽  
The North

The species of this genus have hairy eyes, unarmed tibiæ and a tufted thorax. The dorsum of the abdomen is more or less tufted, but in some species the tuftings are not noticeable. Several species which seem to me to belong to Graphiphora (Taeniocanpa) have been referred to this genus ; among these I may mention orobia of Harvey, modesta, incincta and thecata of Morrison, and the species described by me as rufula and puerilis.

The North American Allies of Hylobius piceus (De Geer) (Coleoptera: Curculionidae)

1957 ◽  
Vol 89 (1) ◽  
pp. 37-43 ◽  
Author(s):  
Stephen L. Wood
Keyword(s):  
North American ◽  
Distinct Species ◽  
Morphological Characters ◽  
North American Species ◽  
Winged Form ◽  
The North ◽  
The Status ◽  
Field Workers ◽  
Dimorphic Species ◽  
Biological Differences

While investigating the biology of the North American species of Hypomolyx, field workers in Manitoba found a vestigial, or short-winged, and a long-winged form under apparently identical conditions in about equal numbers. Although biological differences were nor then apparent, there was doubt as to whether they were dealing with one dimorphic species or with two distinct species, A search for morphological characters brought to light numerous differences between the two forms, supporting the view that two species were present. These differences, a description the previously unrecognized species, and notes concerning the status of the genera Hylobius and Hypomolyx are reported below.

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