bluuebunny/crossref_metadata_2025_split huggingface dataset:
THE “DOCTOR'S DILEMMA”, OR IDEALS, ATTITUDES AND COMPROMISE IN INSECT CONSERVATION
Authors: New T. R. 
Published: April 2007

AbstractSpecies‐orientated conservation programs accord priority to selected species based on values of different kinds, a process which can conflict with ideals and necessitate compromise with them in determining how restricted logistic support for conservation is to be allocated. The importance of utilitarian and intrinsic values is explored in relation to setting such priorities for insects, and approaches to selecting or nominating priority species are discussed.
SUSCEPTIBILITY OF SOYBEANS TO DAMAGE BY NEZARA VIRIDULA (L.) (HEMIPTERA: PENTATOMIDAE) AND RIPTORTUS SERRIPES (F.) (HEMIPTERA: ALYDIDAE) DURING THREE STAGES OF POD DEVELOPMENT
Authors: Brier H. B. , Rogers D. J. 
Published: April 2007

AbstractCaged Davis soybean plants were infested with Nezara viridula (L.) and Riptortus serripes (F.) (4.4 adults/m) at 3 stages of pod development in 3 experiments in 1987, 1988 and 1989. Bug feeding reduced seed yield and oil content during pod fill, but not during pod elongation or pod ripening. N. viridula reduced yields significantly in 1987 and 1988, (183 and 494 kg/ha) but R. serripes reduced yields significantly only in 1988 (353 kg/ha). Both species damaged more seeds during pod fill than during any other pod stage, but N. viridula damaged more seeds than R. serripes. Mean seed weight was reduced only during pod fill. In contrast, the mean weight of undamaged seeds increased during pod fill. This indicated partial compensation by Davis soybeans for damage caused by the above bug species at a density of 4.4 adults/m. Seed oil content, recorded only in 1988, was reduced significantly by N. viridula, but not by R. serripes.
TERMITES OF ECONOMIC SIGNIFICANCE IN SUBURBAN PERTH, WESTERN AUSTRALIA: A PRELIMINARY STUDY OF THEIR DISTRIBUTION AND ASSOCIATION WITH TYPES OF WOOD (ISOPTERA)
Authors: Postle A. , Abbott I. 
Published: April 2007

AbstractA survey of termites carried out by pest control operators in metropolitan Perth yielded 4 species: Coptotermes michaelseni Silvestri, C. acinaciformis raffrayi Wassmann, Nasutitermes exitiosus (Hill) and Heterotermes platycephalus Froggatt. The first 2 species were the most frequently collected and therefore of the most likely economic significance. No significant differences between the incidence of the two commonest species in relation to average annual rainfall or soil type were found. Most termite damage was recorded in outdoor situations. Hardwoods were more frequently infested than softwoods.
DROSOPHILA FLAVOHIRTA MALLOCH (DIPTERA: DROSOPHILIDAE) IN EUCALYPTUS FLOWERS: OCCURRENCE AND PARASITES IN EASTERN AUSTRALIA AND POTENTIAL FOR BIOLOGICAL CONTROL ON EUCALYPTUS GRANDIS IN SOUTH AFRICA 1
Authors: TRIBE G. D. 
Published: April 2007

Abstract Drosophila flavohirta, which causes substantial losses in honey production in South Africa, was reared from Eucalyptus flowers within Yuraygir National Park, N.S.W. Most infested flowers (88%) harboured a single fly pupa attached either to the style (77%) or stamen (21%). Nectar secretion by individual flowers ceased by the 7th day, forcing D. flavohirta larvae to migrate between flowers. This, and predation by ants, makes localised mass flowering of hosts crucial to D. flavohirta survival. Two parasitoid species were recovered from D. flavohirta pupae. Aprostocetus sp. (Eulophidae) accounted for 97% of the parasitised pupae and an eucoilid for the remainder. The average parasitism was 15% (range 5‐28%).
ATTRACTIVENESS OF FOUR COLOURS OF TRAPS TO CEREAL APHIDS (HEMIPTERA: APHIDIDAE) IN SOUTH AUSTRALIA
Authors: DE BARRO P. J. 
Published: April 2007

AbstractPan traps coloured yellow, “bright” green, white, and “young wheat” green were tested for their attractiveness to cereal aphids in Adelaide in winter/spring and summer. In winter/spring Rhopalosiphum padi (L.), Metopolophium dirhodum (Walker) and Sitobion nr fragariae (Walker) were attracted most strongly to yellow followed by “bright” green, while R. maidis (Fitch) was absent. Only R. maidis was trapped in large numbers during summer and again yellow and “bright” green were the most attractive.
SECRETORY SPINES IN IMMATURES OF ALEUROCANTHUS QUAINTANCE AND BAKER (HEMIPTERA: ALEYRODIDAE)
Authors: CARVER MARY 
Published: April 2007

AbstractThe dorsal spines of immatures of some Aleurocanthus spp. are secretory. Sticky, viscous, retentive droplets are secreted through subapical orifices in the hollow spines of some species, through apical orifices in others. The droplets apparently allow the adherence of earlier nymphal exuviae, and may have a defensive function.
TECHNIQUE FOR MASS REARING CTENARYTAINA THYSANURA (FERRIS AND KLYVER) (HEMIPTERA: PSYLLIDAE)
Authors: MENSAH R. K. , MADDEN J. L. 
Published: April 2007

AbstractA mass rearing technique for consistent production of large numbers of Ctenarytaina thysanura for laboratory studies is described. The number of ovarioles of laboratory‐reared and field‐collected C. thysanura was compared.
INFLUENCE OF CULTURAL PRACTICES ON DAMAGE CAUSED BY INOPUS RUBRICEPS (MACQUART) (DIPTERA: STRATIOMYIDAE) TO SUGARCANE
Authors: SAMSON P. R. , CORRIE K. D. , DOMINIAK B. C. 
Published: April 2007

AbstractA survey of damage caused by Inopus rubriceps to sugarcane was carried out in the Millaquin‐Qunaba mill area near Bundaberg. Damage was less frequent in first and second ratoon crops than in older ratoons. An effect of sugarcane varieties was evident, but damage levels were the same for the 3 main varieties in the district. No damage was recorded in fields treated with suSCon Blue (controlled‐release chlorpyrifos granules) against canegrubs (Coleoptera: Scarabaeidae). Damage was more frequent in cane fields that had been replanted immediately after ploughout of the previous crop than in those that had an interval without cane. This interval could be a bare fallow or a rotation with a vegetable crop. Other factors including rotary hoeing, past use of dieldrin, and use of chlorpyrifos EC at planting were not shown to affect the frequency of damage.
LABORATORY REARING OF HALOTYDEUS DESTRUCTOR (TUCKER) (ACARI: PENTHALEIDAE)
Authors: RIDSDILL‐SMITH T. J. 
Published: April 2007

AbstractFor the first time Halotydeus destructor has been laboratory‐reared over the summer (October‐May), on Trifolium subterraneum plants at fluctuating temperatures of 11–18°C.
DISTRIBUTION AND BIOLOGY OF A NEW BAGOUS WEEVIL (COLEOPTERA: CURCULIONIDAE) WHICH FEEDS ON THE AQUATIC WEED, HYDRILLA VERTICILLATA
Authors: BALCIUNAS J. K. , PURCELL M. F. 
Published: April 2007

AbstractA new, undescribed species of aquatic weevil, Bagous sp., was found feeding on the submersed aquatic plant, hydrilla, Hydrilla verticillata, at 21 sites, from Kakadu National Park in the N.T., to Grafton in N.S.W. The larvae and adults feed on hydrilla beneath the surface, fragmenting the stems, then continue feeding on floating fragments, and those stranded on the shoreline, where the larvae pupate. Single eggs are laid in hydrilla stems, within which the three larval instars develop. Development from egg to adult takes 12–14 d at 25°C. This Bagous weevil has been exported as a potential biological control agent to the United States, where hydrilla is a pest. Figures illustrating this new species and distinguishing it from the similar Bagous australasiae are provided.
REVISION OF THE AUSTRALIAN GENUSAUSTROSAROPOGONHARDY (DIPTERA: ASILIDAE)
Authors: Daniels G. 
Published: April 2007

AbstractAustrosaropogonHardy is revised and 10 new species described:barbula, celaenops, gephyrion, insulanus, melanops, montanus, nigritibia, palleucus, periscelis, andthule.The genus is distributed in eastern Australia and Lord Howe Island. A key to species is provided.
VIABILITY OF POLLEN CARRIED BY APIS MELLIFERA L. TRIGONA CARBONARIA SMITH AND VESPULA GERMANICA (F.) (HYMENOPTERA: APIDAE, VESPIDAE)
Authors: Harriss F. C. L. , Beattie A. J. 
Published: April 2007

AbstractAntibiotics on the surface of ants inhibit pathogenic microorganisms and significantly lower pollen viability. However, the viability of pollen in contact with the integument of Apis mellifera L. and Vespula germanica (F.) is not significantly lowered. Trigona carbonaria Smith induces some reduction in pollen viability and this may be the effect of resins harvested for nest construction. The disruption of pollen function by T. carbonaria is much less severe than that produced by ants. Differential integumental effects on pollen are consistent with the relative abundance of bee, wasp and ant pollination systems, particularly the extreme rarity of pollination by ants.
ADDITIONAL SPECIES OF CHAETOPHTHALMUS BRAUER AND BERGENSTAMM (DIPTERA: TACHINIDAE) FROM PAPUA NEW GUINEA
Authors: Cantrell B. K. , Shima Hiroshi 
Published: April 2007

AbstractEleven new species of Chaetophthalmus Brauer and Bergenstamm are described from Papua New Guinea: argentifrons, aurifrons, bicoloratus, gressitti, inconstans, laticeps, nitidus, sedlacekorum, shinonagai, taylori and wau. A revised key to species of Chaetophthalmus is presented.
INSECTICIDAL CONTROL OF MYRMECIA PILOSULA F. SMITH (HYMENOPTERA: FORMICIDAE)
Authors: Williams Margaret A. 
Published: April 2007

AbstractFour chemicals registered for ant control in Tasmania and available in household packs (bendiocarb, chlorpyrifos, diazinon and permethrin) are effective in the control of jackjumper ant, Myrmecia pilosula. Chlordane also gave control but was slow to act. Propoxur was ineffective.
NOMENCLATURE AND DISTRIBUTION OF SOME AUSTRALIAN AND NEW GUINEAN ANTS OF THE SUBFAMILY FORMICINAE (HYMENOPTERA: FORMICIDAE)
Authors: Taylor Robert W. 
Published: April 2007

AbstractVarious Australian and New Guinean species of the formicine ant genera Acropyga Roger, Camponotus Mayr, Echinopla Fr. Smith, Notonus Emery, Notostigma Emery, Polyrhachis Fr. Smith, Prolasius Forel, Pseudonotoncus Clark, Stigmacros Forel and Teratomyrmex McAreavey are discussed. Notoncus and Prolasius are recorded for the first time from New Guinea. Notoncus capitatus Forel, Stigmacros foreli Viehmeyer and S. fossulata Viehmeyer are reinstated from junior synonymy. Prolasius nitidissimus formicoides (Forel) and P. hemiflavus wilsoni McAreavey are raised to species. New synonymies (senior names listed first) are: Acropyga acutiventris Roger =A. moluccana australis Forel; Echinopla turneri Forel =E. turneri picticeps Forel; Notostigma carazzii (Emery) =N. podenzanai Emery; Prolasius convexus McAreavey =P. nigriventris McAreavey; P. flavicornis Clark =P. flavidiscus McAreavey =P. flavicornis minor McAreavey; and P. nitidissimus (André) =P. niger Clark =P. depressiceps similis McAreavey. Notostigma sanguinea Clark is transferred to Camponotus as C. johnclarki Taylor nom.n., and C. sanguineus McAreavey is renamed C. macareaveyi Taylor nom.n., both changes due to secondary homonymy. The aggregate name Pseudonotoncus (hirsutus) Clark is proposed to cover the 2 nominal species of that genus. The putative dolichoderine Turneria frenchi Forel is declared incertae sedis in family Formicidae. Biological and distributional notes are given, including information on the association of the pseudococcid Xenococcus annandalei Silvestri with Acropyga acutiventris.
FEEDING BEHAVIOUR AND PEST STATUS OF CTENARYTAINA THYSANURA (FERRIS AND KLYVER) (HEMIPTERA: PSYLLIDAE) ON BORONIA MEGASTIGMA (NEES) IN TASMANIA
Authors: Mensah R. K. , Madden J. L. 
Published: April 2007

Abstract Ctenarytaina thysanura is a phloem feeder and feeding by nymphs was restricted to the young, actively growing boronia shoots. During feeding C. thysanura produces honey dew and with high infestations, the boronia foliage becomes heavily contaminated with sugar rich excreta and in turn black sooty mould. Severely affected plants lose turgor, growth ceases and leaves absciss. Less severe infestations reduce vegetative growth and the initiation and formation of flower buds. Experimentally C. thysanura causes a 41.7% loss of flowers and suppresses oil yield. Year‐old infested plants cease producing new nodes 56 d after initial infestation and growth ceases entirely within 98 d. Damage to the plant is cumulative and is most apparent as nymphs enter the 4th and 5th stages. Based on market values of flowers and costs of controlling the insects for 1988/89 and 1989/90, the economic‐injury level for year‐old boronia plants is 8 mature nymphs per terminal shoot.
CHEMICAL COMPOSITION AND TAXONOMIC SIGNIFICANCE OF DEFENSIVE SECRETIONS OF SOME AUSTRALIAN TENEBRIONIDAE (COLEOPTERA)
Authors: Brown W. V. , Doyen J. T. , Moore B. P. , Lawrence J. F. 
Published: April 2007

AbstractThe defensive secretions of 88 species of Australian Tenebrionidae from 63 genera and 23 tribes have been analysed. These secretions comprise mainly quinones with 1‐alkenes and, in some cases, smaller quantities of other components. In general, the results support the conclusion from overseas studies that defensive chemistry in this family has been plastic and that individual components are seldom likely to prove characteristic for particular taxa. However, limited correlations between defensive chemistry and taxonomy are apparent and their bearing on some recent changes in higher classification of the Australian fauna is discussed.
ANOPHELES ANNULIPES WALKER (DIPTERA: CULICIDAE) AT GRIFFITH, NEW SOUTH WALES. 4. PHENOLOGY OF TWO SIBLING SPECIES
Authors: Foley D. H. , Barnes A. , Bryan J. H. 
Published: April 2007

AbstractA longitudinal study of adult Anopheles annulipes species A and species G at Griffith, N.S.W. was undertaken from late spring to early autumn for 3 consecutive years. An. annulipes sensu lato from CO2 baited light traps at 2 sites were identified by electrophoresis for 2 years. Regression models were fitted to log‐transformed data to identify factors accounting for variability in trap catches. Annual and lunar cycles, year, site and rainfall effects were shown to be significant. Rainfall had a negative effect on numbers. Species A and species G showed similar responses to lunar phase, peaking 16.9 and 16.4 d after new moon, respectively. The phenologies of the sibling species differed with peak numbers of species A in late January and of species G in mid March.
A SECOND SUGARCANE ARMYWORM (LEUCANIA LOREYI(DUPONCHEL)) FROM AUSTRALIA AND THE IDENTITY OFL. LOREYIMIMARUNGS (LEPIDOPTERA: NOCTUIDAE)
Authors: Edwards E. D. 
Published: April 2007

AbstractThe presence in Australia of a second sugarcane armyworm, Leucania loreyi, in addition to L. loreyimima, is recognised for the first time. L. stenographa Lower, stat. rev. is shown to be a senior subjective synonym of L. loreyimima syn.n. Characters to distinguish the 2 species are given.
REVIEW OF THETHALYCRODESCOMPLEX OF GENERA (COLEOPTERA: NITIDULIDAE) ENDEMIC TO THE AUSTRALIAN REGION
Authors: Kirejtshuk A. G. , Lawrence J. F. 
Published: April 2007

AbstractThe Thalycrodes complex includes the genera Thalycrodes Blackburn, Rixerodes gen.n. and Australycra gen.n., all of which are endemic to Australia. The following new species and new combination are proposed: Thalycrodes alutaceum sp.n., T. annae sp.n., T. mixtum sp.n., T. calvatum sp.n., Rixerodes cornutulus sp.n., R. cunninghami sp.n. and Australycra obscura (Blackburn), comb.n.
NOTES ONPARABLAXSCHWARZ AND THE SUBFAMILY PITYOBIINAE WITH DESCRIPTION OFPARABLAX OSSASP.N. FROM TASMANIA (COLEOPTERA: ELATERIDAE)
Authors: Calder A. A. 
Published: April 2007

Abstract Parablax ossa sp.n. is described from both sexes collected on Mt Ossa, Tasmania. The newly discovered male of Parablax rumaiy Calder is described and the aedeagus figured. Some generic characters (frontal region of head, anterior margin of scutellum and hind wing sclerotisations) of Parablax Schwarz are reappraised. The Pityobiinae, believed by Dolin to comprise Pityobius LeConte, Tibionema Guérin‐Méneville, Metablax Candèze and Parablax Schwarz, is reassessed in the light of female genitalic characters.
EMPOASCA (EMPOASCA) SMITHI, A NEW SPECIES OF LEAFHOPPER DAMAGING CITRUS IN QUEENSLAND AND NOTES ON OTHER TYPHLOCYBINAE FROM AUSTRALIA (HEMIPTERA: CICADELLIDAE)
Authors: Fletcher M. J. , Donaldson J. F. 
Published: April 2007

AbstractDamage to developing citrus fruit at Mundubbera in Queensland was caused by the feeding of a typhlocybine leafhopper (Hemiptera: Cicadellidae) which is described as Empoasca (Empoasca) smithi n.sp. Australian species previously referred to this genus were transferred to Austroasca Lower and until the current record, no Australian species of Empoasca sensu stricto have been recognised. Motschulskyia (Togaritettix) serratus Matsumura is also recorded from Australia for the first time. Austroasca (Paolia) Lower is synonymised with Dialecticopteryx Kirkaldy.
LIFE HISTORY AND BIOLOGY OF SESAMIA GRISESCENS WALKER (LEPIDOPTERA: NOCTUIDAE), A SUGARCANE BORER IN PAPUA NEW GUINEA
Authors: Young G. R. , Kuniata L. S. 
Published: April 2007

Abstract Sesamia grisescens is a pest of sugarcane, Saccharum officinarum, in Papua New Guinea. Egg masses are laid beneath the sheaths of younger leaves of the sugarcane stalk. Eggs hatch 9 d after oviposition and first instars mine the inner surface of the leaf sheath for 2 d before boring into the terminal internodes of the stalk. The gregarious early instars feed on the internode tissue, killing the apical meristem. After the death of the apical meristem and spindle leaves, the larvae migrate to the upper 3–4 internodes of adjacent undamaged stalks where large tunnels are mined. Several days prior to pupation, the larvae cut large exit holes through the stalk rind and retreat up to 5 cm into the tunnel to pupate. There are 7 larval instars. In the laboratory, the larval and pupal stages occupied 34 and 17 d, respectively. The time from egg to adult was 60 d. Adults survived up to 7 d and mating commenced 34 h after emergence. Alternative host plants are S. robustum, S. spontaneum, S. edule, Pennisetum purpureum, and Panicum maximum.
AN ELECTROPHORETIC STUDY OF ERIOSOMA LANIGERUM (HAUSMANN) ON APPLE AND ERIOSOMA SP. FROM GALLS ON ELM IN CANBERRA, AUSTRALIA (HEMIPTERA: APHIDIDAE)
Authors: Fisk Jennifer H. , Carver Mary , Eastop V. F. 
Published: April 2007

AbstractA preliminary electrophoretic study was done to compare Eriosoma lanigerum (Hausmann), the woolly apple aphid, from apple, with Eriosoma sp. from galls on elm in Canberra. No fixed allozyme differences were found, which is consistent with the hypotheses that either the two populations are conspecific (i.e. are both E. lanigerum), or are recently separated sibling species.
HONEY BEE (APIS MELLIFERA L.) DEATHS NEAR SPRAYED COTTON AND OBSERVATIONS ON BEE FORAGING BEHAVIOUR IN FLOWERING COTTON (HYMENOPTERA: APIDAE)
Authors: Robertson L. N. , Rhodes J. W. 
Published: April 2007

AbstractTrials were conducted to investigate the attractiveness of cotton to honey bees (Apis mellifera L.), and bee mortality resulting from insecticide applications to cotton near Emerald, central Queensland. Bees died at hives sited within 3 km of sprayed, flowering cotton on two occasions. Methyl‐parathion was identified in dead bees and in pollen taken from hives on one occasion. Dimethoate residues were detected in dead bees at the same site after application of this chemical to cotton. Bee foraging in areas exposed to spraying was implicated as leading to the mortality, rather than drift to the hive site, as two of the five hives did not have increased deaths on either occasion. Bees were shown to collect nectar and pollen from cotton flowers. Numbers peaked at an average of 17.5 bees per 100 m of crop row in February on an unsprayed trial in southeastern Queensland.
MONTHLY PERIODICITY AND ABUNDANCE OF MOSQUITOES (DIPTERA: CULICIDAE) NEAR BATEMANS BAY ON THE SOUTH COAST OF NEW SOUTH WALES, 1985–1988
Authors: Russell R. C. , Vale T. G. , Wells P. J. , Cloonan M. J. 
Published: April 2007

AbstractDuring an investigation of the seasonal activity of mosquitoes and arboviruses in two coastal native forests, collections of adult mosquitoes with dry‐ice baited light traps led to the determination of a fauna comprising 34 species for the Termeil State Forest and 33 species for the Mogo State Forest/Batemans Bay locality. The monthly collection data for all species are presented, revealing the dominance of the saltmarsh pest species Aedes vigilax (Skuse) at Mogo, and the sylvan freshwater species Anopheles annulipes Walker s.l. and Coquillettidia linealis (Skuse) at Termeil. The results reflect the respective environments with the extensive saline marsh and mudflat habitats at Batemans Bay contrasting with the predominantly freshwater marsh and lake habitats of Termeil.
NEPHOTETTIX SPECIES (HEMIPTERA: CICADELLIDAE) ON RICE AND WEEDS IN QUEENSLAND
Authors: Kay I. R. , Brown J. D. 
Published: April 2007

Abstract Nephotettix malayanus Ishihara and Kawase was recorded on rice (Oryza sativa L.) and on Leersia hexandra Schwartz, while N. nigromaculatus (Motschulsky) was found only on L. hexandra. No Nephotettix spp. were found on Echinochloa colona L. These host associations differ from those reported in tropical Asia.
THE PERIDOMESTIC CONTAINER‐BREEDING MOSQUITO FAUNA OF DARNLEY IS. (TORRES STRAIT) (DIPTERA: CULICIDAE), AND THE POTENTIAL FOR ITS CONTROL BY PREDACIOUS MESOCYCLOPS COPEPODS
Authors: Brown M. D. , Mottram P. , Fanning I. D. , Kay B. H. 
Published: April 2007

AbstractFive species of mosquitoes were found breeding in peridomestic containers on Darnley Is. These were Aedes aegypti (L.), Ae. scutellaris (Walker), Culex quinquefasciatus Say, Cx halifaxii Theobald, and Cx annulirostris Skuse. Ae. aegypti constituted 59.6% and 92% of the mosquito fauna from large water storage containers in wet and dry seasons respectively. Ae. scutellaris was the most abundant species sampled from small containers at the end of the wet season, forming 56.8% of the fauna. During the dry season, Ae. aegypti was the most abundant species sampled from small containers, constituting 82.4% of the larvae in these sites. Breteau indices of 295 and 90 were calculated for Ae. aegypti breeding during the wet and dry season respectively. No Ae. scutellaris were sampled during the dry season, but the species exhibited a Breteau index of 270 during the wet season. Large water storage containers produced 97% and 99% more mosquito larvae, than did small container categories during wet and dry seasons respectively. Water tanks containing an indigenous undescribed. Mesocyclops sp., contained significantly less mosquito larvae than those tanks without Mesocyclops. Distinct vertical stratification in Mesocyclops and mosquito larval populations were evident in the water tanks: 78% of the Mesocyclops were sampled from the bottom of the tanks, and 65% and 75% of Ae. aegypti and Cx quinquefasciatus respectively, were retrieved from the surface.
THE IDENTITY OF AUSTRALIAN SPECIMENS RECORDED AS LEPIDOSINELLA ARMATA HANDSCHIN 1920 (COLLEMBOLA: ENTOMOBRYIDAE) WITH A KEY TO AUSTRALIAN SINELLA AND COECOBRYA
Authors: Greenslade Penelope 
Published: April 2007

AbstractSpecimens recorded as Lepidosinella armata Handschin 1920 from Jenolan Caves by Richards and Lane (1966) are identified as Coecobrya sp. nr hoefti Schäffer 1987 and are described and figured. A key is given to the Sinella and Coecobrya species known from Australia.
KARYOTYPES OF CEREAL APHIDS IN SOUTH AUSTRALIA WITH SPECIAL REFERENCE TO RHOPALOSIPHUM MAIDIS (FITCH) (HEMIPTERA: APHIDIDAE)
Authors: Barro P. J. De 
Published: April 2007

Abstract Rhopalosiphum maidis in South Australia has a karyotype of 2n = 8, regardless of host plant. This contrasts with world‐wide records where other karyotypes (2n = 9, 10) are common on host plants other than maize and sorghum. R. maidis (2n = 9) has been recorded consistently in eastern Australia on hosts other than maize. Other cereal aphids in South Australia, namely, R. padi (L.), Metopolophium dirhodum (Walker) and Sitobion nr fragariae, have karyotypes as previously recorded in the literature.