Marshall (1916) referred 26 species to genus Leptomias Fst.and .put generic names Heteromias Fst., Parisomias Fst. and Piazomias Lacd. (part) as its synonyms. Gunther and Zumpt (1933) added Cneorrhinus Redtenb.also in...Marshall (1916) referred 26 species to genus Leptomias Fst.and .put generic names Heteromias Fst., Parisomias Fst. and Piazomias Lacd. (part) as its synonyms. Gunther and Zumpt (1933) added Cneorrhinus Redtenb.also in the list of synonyms of Leptomias st.Later on, Aslam (1961) revalidated Parisomias Fst.reshuffled the position of a few species and described a number of new species under the restricted Leptomias Fst.Accordingiy, as many as 32 species were referred to the genus Leptomias Fst.展开更多
Phylogenetic relationships among 146 species of Coleoptera （Families： Curculionidae, Staphylinidae and Carabidae） were estimated based upon mitochondrial Cytochrome Oxidase 1 gene sequences. The monophyletic of the...Phylogenetic relationships among 146 species of Coleoptera （Families： Curculionidae, Staphylinidae and Carabidae） were estimated based upon mitochondrial Cytochrome Oxidase 1 gene sequences. The monophyletic of the polyphaga and Adephaga was not supported in our study using COlgene sequences, as family Carabidae （Adephaga） was grouped with family Staphylidae （Polyphaga） with Staphylinidae paraphyletic. The subfamily Scolytinae is the most common ancestor for the subfamilies： Ceutorhynchinae, Curculioninae and Dryophtborinae and hence the oldest. The subfamily Cryptorhynchinae is the oldest among the five tested Curculionidae families. At the family level, the genetic distances and phylogenetic analysis obtained in this study showed that the family Carabidae was more related to family Staphylinidae than to family Curculionidae with the topology Staphylinida-Carabidae-Curculionidae. The topology was the same when Micromus igorotus from order Neuroptera was used as an outgroup taxon as it was Staphylinida, Carabidae, Curculionidae/Neuroptera. An alternative topology was obtained when Acytolepis puspa from order Lepidoptera was used as an outgroup that was Carabidae, Staphylinida, Curculionidae-Neuroptera/Lepidoptera. where the species of order Neuroptera placed within family Curculionida. According to the estimated genetic distances and to the standard mitochondrial DNA clock estimated at 2.3% MYA, family Curculionidae separated from family Staphylinidae and Carabidae approximately 112 and 115 MYA, respectively.展开更多
It was isolated eleven species of weevils family （Curculionidae） back to Subfamiles are Brachyderinae, Cleoninae, depending on the exact Microsculpture of the pits on elytra of these types, namely, Bothynoderes memo...It was isolated eleven species of weevils family （Curculionidae） back to Subfamiles are Brachyderinae, Cleoninae, depending on the exact Microsculpture of the pits on elytra of these types, namely, Bothynoderes memosae, Tanymecus sp., Cleonus orratus, Larinus maculosus, Lixus sp., Hypera sp., Amnoeleonus hiroglyphicus, Bangasternus planifrons, Phacephorus nubeculosus, Coniocleonus puseudooldiquus, Tanymecus insipidus.展开更多
Two new species of the genus Eumyllocerus Sharp, 1896, of the subfamily Entiminae Schoenherr, 1823, are described from China. Eumyllocerus longisetus sp. n. may be distinguished from other species of the genus by its ...Two new species of the genus Eumyllocerus Sharp, 1896, of the subfamily Entiminae Schoenherr, 1823, are described from China. Eumyllocerus longisetus sp. n. may be distinguished from other species of the genus by its long bristle-like, erect setae on the intervals, each of which is longer than the width of the second interval, the setae arrangedin double rows, and its shell-like, shiny, dense, metallic green scales. Eumyllocerus rotundicorpus sp. n. may be distinguished from any other Eumyllocerus species by its oval and inflated elytral shape, short stout metepisternum, small humeri, elytral setae shorter than 0.5 times the width of the second interval, the setae arranged in double rows, and its golden copper and pearl gray scales. The taxonomy of the genus is discussed. The two new species are described and habitus photographs and figures of diagnostic characters are provided. The type specimens of the new species are deposited in the Institute of Zoology, Chinese Academy of Sciences, Beijing, China (holotype and paratypes) and the Korean Entomological Institute, Korea University, Seoul, Korea (paratypes).展开更多
The survival of overwintering boll weevil, Anthonomus grandis grandis （Boheman）, adults on non-cotton hosts in the Lower Rio Grande Valley （LRGV） of Texas was examined from 2001 to 2006. The success of the Boll We...The survival of overwintering boll weevil, Anthonomus grandis grandis （Boheman）, adults on non-cotton hosts in the Lower Rio Grande Valley （LRGV） of Texas was examined from 2001 to 2006. The success of the Boll Weevil Eradication Program, which was reintroduced into the LRGV in 2005, depends on controlling overwintering boll weevil populations. Laboratory studies were conducted using boll weevil adults that were captured in pheromone traps from September through March. The number of adults captured per trap declined significantly in the field from fall to the beginning of spring （3.5-7.0-fold）. The proportion of trapped males and females did not differ significantly. The mean weight of boll weevil adults captured in September was 13.3 mg, while those of captured adults from November to February were significantly lower and ranged from 6.7 to 7.8 mg. Our results show that boll weevil adults can feed on different plant pollens. The highest longevity occurred when adults were fed almond pollen or mixed pollens （72.6 days and 69.2 days, respectively） and the lowest when they fed on citrus pollen or a non-food source （9.7 days or 7.4 days, respectively）. The highest adult survival occurred on almond and mixed pollens [88.0%-97. 6% after 1st feeding period （10 days）, 78.0%-90.8% after 3rd feeding period （10 days）, 55. 0%-83.6% after 5th feeding period （10 days）, and 15.2%-32.4% after lOth feeding period （10 days）]. The lowest adult survival occurred on citrus pollen [52.0%-56.0% after 1st feeding period （10 days）, 13.3% after 3rd and 5th feeding periods （10 days）, and 0 after 6th feeding period （10 days）]. Pollen feeding is not a behavior restricted to adult boll weevils of a specific sex or physiological state. Understanding how boll weevil adults survive in the absence of cotton is important to ensure ultimate success of eradicating this pest in the subtropics.展开更多
Among eight species of Polydrusus weevils which belong to subgenus Scythodrusus, at least two possess parthenogenetic forms： P （S.） inustus and P （S.）pilifer. Both of these species consist of dioecious population...Among eight species of Polydrusus weevils which belong to subgenus Scythodrusus, at least two possess parthenogenetic forms： P （S.） inustus and P （S.）pilifer. Both of these species consist of dioecious populations in the Caspian area and of parthenogenetic populations in Eastern Europe （R （S.） inustus）, the Caucasus region （both species） and Middle Asia （P （S.）pilifer）. The origin of parthenogenesis in this subgenus is unresolved; however some data suggest that the parthenogenetic forms are of hybrid ancestry. The genetic distinctness of parthenogenetic Scythodrusus was assessed on the basis of COII, ITS2, EFI-a and Wolbachia wsp, 16S ribosomal DNA, ftsZ and hcpA sequence comparisons. Both taxa turned out to be monophyletic for all markers, which is an evidence against hybridization of their dioecious ancestors. On the other hand, a high frequency of heterozygous P （S.） inustus females suggests an origin resulting from hybridization between genetically distinct dioecious representatives of this species. Very similar strains of Wolbachia supergroup A were found in both species, indicating that they have been either inherited from a common ancestor or were transmitted between parthenogenetic Scythodrusus weevils and probably spread randomly across their ranges.展开更多
文摘Marshall (1916) referred 26 species to genus Leptomias Fst.and .put generic names Heteromias Fst., Parisomias Fst. and Piazomias Lacd. (part) as its synonyms. Gunther and Zumpt (1933) added Cneorrhinus Redtenb.also in the list of synonyms of Leptomias st.Later on, Aslam (1961) revalidated Parisomias Fst.reshuffled the position of a few species and described a number of new species under the restricted Leptomias Fst.Accordingiy, as many as 32 species were referred to the genus Leptomias Fst.
文摘Phylogenetic relationships among 146 species of Coleoptera （Families： Curculionidae, Staphylinidae and Carabidae） were estimated based upon mitochondrial Cytochrome Oxidase 1 gene sequences. The monophyletic of the polyphaga and Adephaga was not supported in our study using COlgene sequences, as family Carabidae （Adephaga） was grouped with family Staphylidae （Polyphaga） with Staphylinidae paraphyletic. The subfamily Scolytinae is the most common ancestor for the subfamilies： Ceutorhynchinae, Curculioninae and Dryophtborinae and hence the oldest. The subfamily Cryptorhynchinae is the oldest among the five tested Curculionidae families. At the family level, the genetic distances and phylogenetic analysis obtained in this study showed that the family Carabidae was more related to family Staphylinidae than to family Curculionidae with the topology Staphylinida-Carabidae-Curculionidae. The topology was the same when Micromus igorotus from order Neuroptera was used as an outgroup taxon as it was Staphylinida, Carabidae, Curculionidae/Neuroptera. An alternative topology was obtained when Acytolepis puspa from order Lepidoptera was used as an outgroup that was Carabidae, Staphylinida, Curculionidae-Neuroptera/Lepidoptera. where the species of order Neuroptera placed within family Curculionida. According to the estimated genetic distances and to the standard mitochondrial DNA clock estimated at 2.3% MYA, family Curculionidae separated from family Staphylinidae and Carabidae approximately 112 and 115 MYA, respectively.
文摘It was isolated eleven species of weevils family （Curculionidae） back to Subfamiles are Brachyderinae, Cleoninae, depending on the exact Microsculpture of the pits on elytra of these types, namely, Bothynoderes memosae, Tanymecus sp., Cleonus orratus, Larinus maculosus, Lixus sp., Hypera sp., Amnoeleonus hiroglyphicus, Bangasternus planifrons, Phacephorus nubeculosus, Coniocleonus puseudooldiquus, Tanymecus insipidus.
文摘Two new species of the genus Eumyllocerus Sharp, 1896, of the subfamily Entiminae Schoenherr, 1823, are described from China. Eumyllocerus longisetus sp. n. may be distinguished from other species of the genus by its long bristle-like, erect setae on the intervals, each of which is longer than the width of the second interval, the setae arrangedin double rows, and its shell-like, shiny, dense, metallic green scales. Eumyllocerus rotundicorpus sp. n. may be distinguished from any other Eumyllocerus species by its oval and inflated elytral shape, short stout metepisternum, small humeri, elytral setae shorter than 0.5 times the width of the second interval, the setae arranged in double rows, and its golden copper and pearl gray scales. The taxonomy of the genus is discussed. The two new species are described and habitus photographs and figures of diagnostic characters are provided. The type specimens of the new species are deposited in the Institute of Zoology, Chinese Academy of Sciences, Beijing, China (holotype and paratypes) and the Korean Entomological Institute, Korea University, Seoul, Korea (paratypes).
文摘The survival of overwintering boll weevil, Anthonomus grandis grandis （Boheman）, adults on non-cotton hosts in the Lower Rio Grande Valley （LRGV） of Texas was examined from 2001 to 2006. The success of the Boll Weevil Eradication Program, which was reintroduced into the LRGV in 2005, depends on controlling overwintering boll weevil populations. Laboratory studies were conducted using boll weevil adults that were captured in pheromone traps from September through March. The number of adults captured per trap declined significantly in the field from fall to the beginning of spring （3.5-7.0-fold）. The proportion of trapped males and females did not differ significantly. The mean weight of boll weevil adults captured in September was 13.3 mg, while those of captured adults from November to February were significantly lower and ranged from 6.7 to 7.8 mg. Our results show that boll weevil adults can feed on different plant pollens. The highest longevity occurred when adults were fed almond pollen or mixed pollens （72.6 days and 69.2 days, respectively） and the lowest when they fed on citrus pollen or a non-food source （9.7 days or 7.4 days, respectively）. The highest adult survival occurred on almond and mixed pollens [88.0%-97. 6% after 1st feeding period （10 days）, 78.0%-90.8% after 3rd feeding period （10 days）, 55. 0%-83.6% after 5th feeding period （10 days）, and 15.2%-32.4% after lOth feeding period （10 days）]. The lowest adult survival occurred on citrus pollen [52.0%-56.0% after 1st feeding period （10 days）, 13.3% after 3rd and 5th feeding periods （10 days）, and 0 after 6th feeding period （10 days）]. Pollen feeding is not a behavior restricted to adult boll weevils of a specific sex or physiological state. Understanding how boll weevil adults survive in the absence of cotton is important to ensure ultimate success of eradicating this pest in the subtropics.
文摘Among eight species of Polydrusus weevils which belong to subgenus Scythodrusus, at least two possess parthenogenetic forms： P （S.） inustus and P （S.）pilifer. Both of these species consist of dioecious populations in the Caspian area and of parthenogenetic populations in Eastern Europe （R （S.） inustus）, the Caucasus region （both species） and Middle Asia （P （S.）pilifer）. The origin of parthenogenesis in this subgenus is unresolved; however some data suggest that the parthenogenetic forms are of hybrid ancestry. The genetic distinctness of parthenogenetic Scythodrusus was assessed on the basis of COII, ITS2, EFI-a and Wolbachia wsp, 16S ribosomal DNA, ftsZ and hcpA sequence comparisons. Both taxa turned out to be monophyletic for all markers, which is an evidence against hybridization of their dioecious ancestors. On the other hand, a high frequency of heterozygous P （S.） inustus females suggests an origin resulting from hybridization between genetically distinct dioecious representatives of this species. Very similar strains of Wolbachia supergroup A were found in both species, indicating that they have been either inherited from a common ancestor or were transmitted between parthenogenetic Scythodrusus weevils and probably spread randomly across their ranges.
