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Full-Text Articles in Entomology
Eucosma Giganteana (Riley) And Sliphium Perfoliatum L., Morphological Variation In An Insect-Plant Association In Eastern South Dakota, Paul J. Johnson, Arvid Boe, Abigail P. Martens
Eucosma Giganteana (Riley) And Sliphium Perfoliatum L., Morphological Variation In An Insect-Plant Association In Eastern South Dakota, Paul J. Johnson, Arvid Boe, Abigail P. Martens
Native Plant Focused Publications
Silphium perfoliatum L., cup plant, has potential as a new multi-purpose crop. It is pollinator-friendly and has biodiversity enhancement, conservation, economic, and medical potential. In eastern South Dakota, S. perfoliatum can produce more than 20 Mg (million grams) ha-1 of biomass and 0.09 Mg ha-1 of seed in agronomic plantings. The giant eucosma moth, Eucosma giganteana (Riley), is a major pest of agronomic S. perfoliatum in the region. We provide a summary of this insect and its association with its host. Our experimental objectives were to determine if the frequency of rhizome occupation by late instar larvae and if their …
Fates Of Ovules In Groundplum Milk-Vetch (Astragalus Crassicarpus Nutt.) In South Dakota, Arvid Boe, Paul J. Johnson
Fates Of Ovules In Groundplum Milk-Vetch (Astragalus Crassicarpus Nutt.) In South Dakota, Arvid Boe, Paul J. Johnson
Native Plant Focused Publications
Groundplum milk-vetch (Astragalus crassicarpus Nutt.) is a native legume found on gravelly to sandy prairie uplands throughout central North America. The large and fleshy fruits, or pods, of this species were consumed by indigenous people and European settlers, and are cached by rodents. Our previous research on native legumes of the northern Great Plains indicated seed predation by insects, notably bruchid beetles belonging to the genus Acanthoscelides Schilsky, was a dominant factor determining viable seed production in natural and artificial plant assemblages. However, although we have studied the reproductive biology of several species of Astragalus L., none had fleshy pods. …
Seed Predators Of Canada Milk-Vetch And Their Parasitoids, Arvid Boe, Paul J. Johnson
Seed Predators Of Canada Milk-Vetch And Their Parasitoids, Arvid Boe, Paul J. Johnson
Native Plant Focused Publications
Canada milk-vetch (Astragalus canadensis L.), North America’s most widespread species of Astragalus, is important for herbivores and granivores in natural ecosystems but suffers heavy seed losses to bruchids and curculionids. Our objectives were: (1) compile a species inventory and describe life histories of insects associated with seed production in Canada milk-vetch, and (2) determine frequencies of pod predation and primary parasitism in Canada milk-vetch. The seed predators were Acanthoscelides perforatus (Horn) and Tychius liljebladi Blatchley. Frequency of pod predation varied between two plant populations (46 and 70%) and between A. perforatus (37 %) and T. liljebladi (21 %). The primary …
Life History Studies, Host Records, And Morphological Description Of Genitalia Of Eurytoma Tylodermatis Ashm. (Hymenoptera : Eurytomidae) From South Dakota, Burruss Mcdaniel, Arvid A. Boe
Life History Studies, Host Records, And Morphological Description Of Genitalia Of Eurytoma Tylodermatis Ashm. (Hymenoptera : Eurytomidae) From South Dakota, Burruss Mcdaniel, Arvid A. Boe
Native Plant Focused Publications
Eurytoma tylodermatis Ashm. was found to be parasitic on Acanthoscelides perforatus (Horn) in seed pods of Canada milk- vetch {Astragalus canadensis L.). Observations on larval behavior and frequency of parasitism are discussed. Male and female genitalia of E. tylodermatis are illustrated.
A New Bruchophagus From Glycyrrhiza Lepidota Pursh In The Northern Great Plains (Hymenoptera : Chalcidoidea : Eurytomidae), Burruss Mcdaniel, Arvid A. Boe
A New Bruchophagus From Glycyrrhiza Lepidota Pursh In The Northern Great Plains (Hymenoptera : Chalcidoidea : Eurytomidae), Burruss Mcdaniel, Arvid A. Boe
Native Plant Focused Publications
A new species, Bruchophagus grisselli McDaniel and Boe, which infests seeds of Glycyrrhiza lepidota Pursh (American licorice), is described and illustrated. It's known from South Dakota and North Dakota in the USA. A field study at 8 sites showed that B. grisselli has a wide distribution throughout the Dakotas.