Corynoptera vagula Tuomikoski and allied species (Diptera: Sciaridae)
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Abstract:
Corynoptera vagula Tuomikoski (northern Europe; Canada: Quebec), Corynoptera fera Mohrig & Heller (central and northern Europe) and Corynoptera nyxa (Mohrig & Menzel) are rediagnosed, and three allied Nearctic species are described: Corynoptera armigera sp. n. (Canada: Yukon), C. fratercula sp. n. (USA: Alaska, Canada: British Columbia), and C. robustior sp. n. (Canada: Ontario). All species are illustrated and a key to the males is provided.Keywords:
Sciaridae
Nearctic ecozone
Sciaridae
Nearctic ecozone
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In the Nearctic region the genus Eugnoriste includes 7 species currently. Four of them are new to science. These are Eugnoriste brachycostalis sp. n., Eug. florea sp. n., Eug. hirsuta sp. n. and Eug. ptilosis sp. n. The male of Eug. brevirostris Coquillett, which has been unknown until now, was identified and described herein. Moreover, an additional description and figures were given for Eug. occidentalis Coquillett. Eugnoriste villosoabdominalis Mohrig is reported as new for North America. The genus Keilbachia includes three species in the Nearctic region presently. Two of them are new to science. These are Keilbachia americana sp. n. and K. semiacuta sp. n. All species presented here were diagnosed, keyed and illustrated by figures as well as data of their distribution provided.
Sciaridae
Nearctic ecozone
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Seven species of the genus Camptochaeta, two of the genus Claustropyga and one of the genus Dichopygina are newly described from the Nearctic region. These are: Camptochaeta abnormalis sp. n., Cam. camptochaetosa sp. n., Cam. grimaldii sp. n., Cam. multispina sp. n., Cam. praexystica sp. n., Cam. subxystica sp. n., Cam. unispina sp. n., Claustropyga postbrevichaeta sp. n., Cl. subbrevichaeta sp. n. and Dichopygina praeaculeata sp. n. All new species are diagnosed and their distribution data are given. Three species, Camptochaeta duplicata Hippa & Vilkamaa, 1994, Claustropyga abblanda (Freeman, 1983) and Cl. sajanica (Mohrig & Antonova, 1978) are reported for the Nearctic region for the first time. With these new species, Camptochaeta includes 30 species, Claustropyga 15 species and Dichopygina 6 species in the Nearctic region now.
Nearctic ecozone
Sciaridae
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Abstract. The validity and composition of Ectrepesthoneura Enderlein are discussed and it is contrasted with the related genus Tetragoneura Winnertz. The occurrence of mid‐tibial sense organs in these genera and elsewhere in the subfamily Sciophilinae is considered. The European Ectrepesthoneura are revised and the secondary sexual characters of the male legs newly described. Two sgecies, E.pubescens (Zetterstedt ) = messaurensis Plassmann, syn.n. and E.colyeri sp.n., are added to the British list. The Nearctic species are discussed and the two eastern species dealt with fully: the male of E.bicolor (Coquillett) is newly recognized and Elaffooni sp.n. described. Some western Nearctic Tetragoneura probably belong correctly to Ectrepesthoneura but examination of types showed that T.quintana Cole, T.longicauda van Duzee and the eastern Nearctic T.pimpla Coquillett belong to Dziedzickia Johannsen in its present broad usage. The Palaearctic Ectrepesthoneura gracilis Edwards also probably has closer affinities with Dziedzickia than with its present assignment. The Japanese Ectrepesthoneura described by Sasakawa (1961) are excluded as they are probably Sciaridae.
Nearctic ecozone
Subfamily
Sciaridae
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Scythropochroa radialis Lengersdorf, 1926 is recorded from Japan (Honshu and Kyushu) as the first representative of this genus from East Asia. The female of this species is redescribed based on the Japanese specimens and compared with a closely similar species, S. gressitti Steffan, 1969 from Micronesia. The egg and xylophagous larva of S. radialis are described for the first time. The biology and larval morphology of Scythropochroa are briefly discussed.
Sciaridae
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Copulatory Behavior and Sex Pheromones in Sciarid Fly, Lycoriella mali (Fitch) (Sciaridae: Diptera).
ツクリタケ栽培の重要な害虫であるツクリタケクロバネキノコバエの交尾行動に性フェロモンが関与しているか明らかにするため交尾行動を解析した.1) 雄成虫は,未交尾雌あるいはその粗抽出物,雌の体のすべての部位に対して交尾反応を示したが,n-ヘキサンで洗浄した未交尾雌成虫に対してはまったく反応しなかった.したがって,性フェロモンは雌の全身に存在し,n-ヘキサンで抽出可能であると考えられた.2) 本種の性フェロモンとして報告されていたn-ヘプタデカンに対してはまったく反応を示さなかった.3) 雌は羽化後2時間経過するとほぼ100%の雄に交尾行動を引き起こした.一方,雄は羽化後1時間以上経過するとほぼ100%反応した.4) 雌は羽化後3日までは100%の雄に反応を引き起こしたが,その後は雄の反応率は低下する傾向が見られた.一方,雄は羽化後9日を経過しても,100%交尾反応を示した.5) 交尾後の雌に対する雄の反応率は急速に低下した.6) 性フェロモンの単離・同定,生物検定のためには,雌雄とも羽化後1日目の個体を使うのがよいと考えられた.
Sciaridae
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Sciaridae
Nearctic ecozone
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Nearctic species of the genus Earota Mulsant & Rey, 1874a are revised. Synonymy of generic names Earota and Macroterma Casey, 1906 is confirmed. Earota dentata (Bernhauer, 1906) (= E. alutacea (Casey, 1906) = E. borealis (Casey, 1906) = E. iowensis (Casey, 1910a)) is recognized as the only valid Nearctic species of the genus. Redescription and illustrations are provided for distinguishing Earota from other aleocharine genera. Atheta sulcata Blatchley, 1910 is placed in synonymy with A. klimschi Bernhauer, 1909 and transferred from Earota to Atheta Thomson, 1858. Lectotypes for Atheta dentata Bernhauer, 1906, Macroterma alutacea Casey, 1906, M. borealis Casey, 1906, A. klimschi Bernhauer, 1909, A. iowensis Casey, 1910a and A. sulcata Blatchley, 1910 are designated.
Nearctic ecozone
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SUMMARY Observations in mushroom houses showed that the number of larvae of L. auripila in the casing was higher than in the compost throughout the post‐casing phase of culture. The intestines of larvae from casing contained both peat and fungal material. Choice of oviposition site was accordingly non‐specific. Females from cropping houses appeared to consist of a mixture of monogenic (predominantly unsexual) and digenic (bisexual) strains. Males matured c. 2 days before females at 20 °C; such protandry appeared to be related to sexual differences in the extent of migration undertaken by the dimorphic sexes. Sciarids were reared from egg to adult equally effectively on (a) detached sporophores or on portions of (b) pileus, (c) stipe or (d) gills, all placed on moist peat, or on detached sporophores placed on a variety of inert substrates. Development was completed where sporophore material was the only food source and also occurred on peat to which only protein, particularly egg albumin, had been added. Hence, assuming no protein metabolism by a third organism, for development in the casing layer to occur, the mushroom need contribute only such proteins. However, their replacement by amino acids was not successful in limited tests. Addition of increasing amounts of the fungal metabolites mannitol and calcium oxalate to compost delayed development, and the accumulation of these materials during fungal growth may be responsible for the antagonism between mycelial and sciarid development which results in subsequent migration of emerging adults.
Sciaridae
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