螯蜂属二新种记述：膜翅目;螯蜂科

本文描述螯蜂属二新种，即波缘螯蜂Ｄｒｙｉｕｓ ｕｎｄａｔｏｍａｒｇｉｎｉｓ ｓｐ．ｎｏｖ．和李氏螯蜂Ｄｒｙｉｎｕｓ ｌｉｉ ｓｐ．ｎｏｖ．模式标本存于浙江农业大学植保系。     

双距螯蜂属一新种：膜翅目：螯蜂科：双距螯蜂亚科

本文描述双距螯蜂属一新种，毛双距螯蜂Ｇｏｎａｔｏｐｕｓ ｃａｐｉｌｌｕｓ ｓｐ．ｎｏｖ．。     

梵净山常足螯蜂属三新种（膜翅目：螯蜂科：常足螯蜂亚科）

本文记述常足螯蜂属３新种：白脸常足螯蜂Ａｐｈｅｌｏｐｕｓ ａｌｂｉｆａｃｉａｌｉｓ Ｘｕ ｅｔ Ｈｅ,ＳＰ．ｎｏｖ。褐唇常足螯蜂Ａｐｈｅｌｏｐｕｓ ｓｐａｄｉｃｅｕｓ Ｘｕ ｅｔ Ｈｅ,ｓｐ．ｎｏｖ。和扁腹常足螯蜂Ａｐｈｅｌｏｐｕｓ ｃｏｍｐｒｅｓｓｕｓ Ｘｕ ｅｔ Ｙａｏ,ｓｐ．ｎｏｖ。     

毛角螯蜂属中国新纪录及一新种记述(膜翅目:螯蜂科:螯蜂亚科)

本文描述毛角螯蜂属一新种：脊毛角螯蜂Ｔｈａｕｍａｔｏｄｒｙｉｎｕｓ ｃａｒｉｎａｔｕｓ ｓｐ．ｎｏｖ．。这是毛角螯蜂属在中国的首次纪录。     

单爪螯蜂属二新种：膜翅目：螯蜂科;单爪螯蜂亚科

本文记述单爪螯蜂属二新种;梳垫单瓜螯蜂Ａｎｔｅｏｎ ｐｅｃｔｉｎａｒｏｌｉｕｍ,ｓｐ．ｎｏｖ。和滑盾单爪螯蜂Ａｎｔｅｏｎ ｂｌａｎｄｕｓｃｕｔｕｍ,ｓｐ．ｎｏｖ。新种的模式标本保存在浙江农业大学植物保护系。     

双距螯蜂属—新种(膜翅目:螯蜂科:双距螯蜂亚科)

本文描述双距螯蜂属—新种，毛双距螯蜂Ｇｏｎａｔｏｐｕｓｃａｐｉｌｕｓｓｐ．ｎｏｖ．。     

新螯蜂属一新种（膜翅目：螯蜂科）

本文报道了新螯蜂属Ｎｅｏｄｒｙｉｎｕｓ Ｒ．Ｃ．Ｌ．Ｐｅｒｋｉｎｓ一新种,百山祖新螯蜂Ｎ．ｂａｉｓｈａｎｚｕｅｎｓｉｓ ｓｐ．ｎｏｖ．。     

新螯蜂属二新种记述（膜翅目：螯蜂科）

本文报道新螯蜂属Ｎｅｏｄｒｙｉｎｕｓ Ｐｅｒｋｉｎｓ２新种：等脉新螯蜂Ｎ．ｉｓｏｎｅｕｒｕｓ ｓｐ．ｎｏｖ．和菱纹叶蝉新螯蜂Ｎ．ｈｉｓｈｉｍｏｎｏｖｏｒｕｓ ｓｐ．ｎｏｖ．。并首次报道新螯蜂属螯蜂寄生殃叶蝉科Ｅｕｓｃｅｌｉｄａｅ昆虫。     

单爪螯蜂属一新种描述：膜翅目：螯蜂科

本文记述了单爪螯蜂属１新种：临安单爪螯蜂Ａｎｔｅｏｎｌｉｎａｎｅｎｓｅｓｐ．ｎｏｖ．,模式标本藏浙江农业大学。     

天目山单爪螯蜂属二新种（膜翅目：螯蜂科：单爪螯蜂亚科）

本文记述采自浙江天目山的单爪螯蜂属Ａｎｔｅｏｎ２新种,即皱单爪螯蜂Ａｎｔｅｏｎ ｒｕｇｏｓｕｍ,ｓｐ．ｎｏｖ．和侧突单爪螯蜂Ａｎｔｅｏｎ ｓｔｙｌｕｎ,ｓｐ．ｎｏｖ．。模式标本保存于浙江农业大学。     

Materials for Chinese Phyllanthoideae

The present paper is part of taxonomic study on Chinese Phyllanthoideae. Included in it are two new varieties, Leptopus esquirolii var. villosus and Drypetes hainanensis var. longistipitata, one new combination, Glochidion triandrum var. siamense, and seven new records in China: Drypetes salicifolia, D. hoaensis. Actephila subsessilis, Glochidion khasicum, G. nubigennum, Bridelia spiosa and B. poilanei. In addition, seventeen taxon names are newly reduced: Liodendron formosanum = Drypetes formosana, Liodendron matsumurae = Drypetes matsumurae, D. longipes = D. indica, Antidesma paxii = A. acidum, A. hiiranense, A. filipes and A. pentandrum var. hiiranense = A. japonicum, A. calvescens = A. montanum, A. microphyllum = A. venosum, Breynia stipitata var. formosana and B. jormosana = B. vitis-idaea, Glochidion zeylanicum var. tomentosum = G. hirsutum, G. rubidulum = G. thomsonii, G. acuminatum = G. triandrum, G. fagifolium and Phyllanthus fagifolius = Glochidion sphaerogynum, Bridelia penangiena = B. insulana, B. henryana = B. tomentosa. All the types are kept in SCBl and PE.     

Phylogenetic revision of the Taenogera Kröber genus-group (Diptera: Therevidae), with descriptions of two new genera

The phylogenetic relationships of the Taenogera genus-group, consisting of nine genera, are examined using cladistic methods. Twenty-one species representing nine genera and one outgroup were compared in a cladistic analysis across 99 states in 44 characters. The genus Taenogera Kröber is revised to contain only T. longa (Schiner), T. nitida (Macquart) and T. notatithorax Mann. Two new genera are described and figured: Actenomeros gen. n., with two species, A. corniculaticaudus sp. n. and A. onyx sp. n.; and Taenogerella gen. n., with four species, Ta. elizabethae sp. n., Ta. platina sp. n., Ta. schlingeri sp. n. and Ta . nigrapicalis (Mann) comb. n. Phylogenetic analysis also supports the removal of Nanexila gracilis (Mann) comb. n. from Taenogera .     

Relationships between host blood factors and proteases in Glossina morsitans subspecies infected with Trypanosoma congolense

Abstract. Host blood effects on Trypanosoma congolense establishment in Glossina morsitans morsitans and Glossina morsitans centralis were investigated using goat, rabbit, cow and rhinoceros blood. Meals containing goat erythrocytes facilitated infection in G. m. morsitans , whereas meals containing goat plasma facilitated infection in G. m. centralis. Goat blood effects were not observed in the presence of complementary rabbit blood components. N-acetyl-glucosamine (a midguMectin inhibitor) increased infection rates in some, but not all, blood manipulations. Cholesterol increased infection rates in G. m. centralis only. Both compounds together added to cow blood produced superinfection in G. m. centralis , but not in G. m. morsitans. Midgut protease levels did not differ 6 days post-infection in flies maintaining infections versus flies clearing infections. Protease levels were weakly correlated with patterns of infection, but only in G. m. morsitans. These results suggest that physiological mechanisms responsible for variation in infection rates are only superficially similar in these closely-related tsetse.     

Selection of Verticillium lecanii Isolates with High Potential for Biocontrol of Cucumber Powdery Mildew by Means of Components Analysis at Different Humidity Regimes

To identify characteristics for the selection of Verticillium lecanii isolates with high potential for biocontrol of Sphaerotheca fuliginea under glasshouse conditions, an exploratory study was performed on the effect of water limitation on the development of 14 isolates. The conidial germination, growth and sporulation of isolates of V. lecanii were studied in a tritrophic system on cucumber leaves and in a ditrophic system in Petri dishes. Their mycoparasitic ability was studied in S. fuliginea and Cladosporium cladosporioides . All characteristics were clearly affected by humidity. Four isolates showed good biocontrol potential. The performance of isolates on agar had less predictive value than on powdery mildew. The germination of isolates of V. lecanii was lower and the mycelial growth faster on agar than on mildewed leaves under corresponding humidity conditions. The results suggest that conditions in the phyllosphere differed from the set humidity in the surrounding air. A correlation was found between the lysis of C. cladosporioides growing in dual culture on agar with isolates of V. lecanii and the parasitism of powdery mildew on detached, rooted leaves. C. cladosporioides might offer a suitable substrate for testing isolates of V. lecanii for mycoparasitic potential under various environmental conditions. Conidial germination, growth and sporulation had limited predictive value.     

Evaluation of the Palaearctic Eurithia consobrina (Diptera: Tachinidae) as a Potential Biocontrol Agent for Mamestra configurata (Lepidoptera: Noctuidae) in Canada

The evaluation of Eurithia consobrina (Meigen) as a candidate for introduction against bertha armyworm, Mamestra configurata (Walker) (Lepidoptera: Noctuidae), in western Canada included studies of its host range, distribution, synchronization with host, constancy, abundance and life history in Europe. In addition, its diapause induction and its coldhardiness were compared with those of the target host M. configurata and its native tachinid parasitoid, Athrycia cinerea (Coq.). E. consobrina was found to fit criteria for a successful biocontrol agent reasonably well. It also had the potential to fill a largely unoccupied niche in the parasitoid complex of M. configurata. E. consobrina has a facultative diapause of the long-day type, similar to A. cinerea, but is less sensitive to diapause-inducing conditions. E. consobrina is at least as coldhardy as A. cinerea and more coldhardy than M. configurata. Laboratory exposures to temperatures of 0 C for 140 days apparently selected for greater coldhardiness, and later generations survived exposures of 140 days at -15 C without significant mortality. Adult E. consobrina were released at three locations in Manitoba in 1986 and 1987, but establishment has not been confirmed.     

Predation by Halmus chalybeus (Coleoptera: Coccinellidae) on Ceroplastes destructor and C. sinensis (Hemiptera: Coccidae: Ceroplastinae) Infesting Citrus in Northland, New Zealand

Predation by Halmus chalybeus (steelblue ladybird) on two species of wax scale was studied on citrus orchards in Northland, New Zealand. Field experiments using an exclusion technique of enclosing citrus branches in bags, found that larval and adult H. chalybeus preyed on first and second instars of both Ceroplastes destructor (white wax scale) and C. sinensis (Chinese wax scale), but not third instar C. destructor. Third instar C. sinensis and adults of both species were not tested but are rarely, if ever, attacked by H. chalybeus. The sampling of scale and ladybird populations and field experiments showed that few scales of either species survived past the second instar stage where H. chalybeus was numerous. The feeding rate of H. chalybeus on settled first and second instar scales was estimated inside bagged branches. Adults consumed on average 15.6 C. destructor and 13.3 C. sinensis per day per ladybird, while larvae ate 9.7 C. destructor per day. These feeding rates accounted for the experimental reduction of scale populations. H. chalybeus is a useful natural enemy for the control of C. destructor and C. sinensis when its activity is not disrupted by pesticides.     

Further flavonoid studies onAttalea species and some related cocosoid palms

In a flavonoid survey of direct and hydrolysed leaf extracts of sixteenAttalea, sevenScheelea and fourOrbignya species free tricin, tricin 7-glycosides, tricin 5-glucoside and flavone C-glycosides were the most frequent constituents; present in 100, 89, 70, and 81% of species, respectively. Luteolin, quercetin and isorhamnetin were each found in only 15% of the sample. The present results confirm the findings of a previous survey thatAttalea, Scheelea andOrbignya are chemically heterogeneous with as much variation between species as between genera. Furthermore, threeAttalea species,A. allenii, A. guaranitica andA. victoriana showed some infraspecific variation. On the other hand all three accessions ofA. ferruginea and six ofA. geraensis examined gave identical flavonoid profiles. The results support the view thatA. geraensis andA. guaranitica are closely related but do not support the suggested close relationship based on morphology betweenA. oleifera, A. burretiana andA. piassabossu.     

Investigations into the evolutionary history of the polyploid complexAntennaria neodioica (Asteraceae: Inuleae)

TheAntennaria neodioica polyploid agamic complex is a polymorphic species occurring across North America mainly north of the terminal margin of the Wisconsin glacier. This taxonomically difficult group has recently been treated as consisting of the four subspeciesA. neodioica subsp.canadensis, subsp.howellii, subsp.neodioica, and subsp.petaloidea. TheA. neodioica agamic complex has been considered of hybrid origin with several sexual diploid species constituting its parentage. Crosses were made among five sexual diploid species ofAntennaria, morphologically similar toA. neodioica s.l., in an attempt to discover its origins. Representative specimens of the five diploid species,A. neodioica s. l., and the synthetic interspecific F₁ hybrids were subjected to various analyses including PCA, cluster (UPGMA), and discriminant analyses. Results suggest that theA. neodioica complex is of multiple hybrid origin involving the four diploid speciesA. neglecta, A. plantaginifolia, A. racemosa, andA. virginica. BecauseA. neodioica is the result of diverse origin it is more desirable to consider the agamic complex as a separate, distinct species from its sexual diploid relatives. Several morphological characters in the diploid species were determined to be polygenically inherited.Investigations into the Evolutionary History of the Polyploid Complexes inAntennaria (Asteraceae: Inuleae). I.