Homoptera Research Articles

Pojava Unaspis euonymi Comstock (Homoptera: Diaspididae) - štitaste vaši kurike na području Semberije

Pojava Unaspis euonymi Comstock (Homoptera: Diaspididae) - štitaste vaši kurike na području Semberije

New Asterolecaniidae s.l. (Homoptera: Coccinea) from different regions of the world and some distributional records

A new genus and four new species of Asterolecaniidae s.l. are described and illustrated: Forticauda borchsenii n. gen., n. sp. from India, Abditicoccus mystroxyloni n. sp. from South Africa, Myceto...

Newly Recorded Species in the Subfamily Deltocephalinae (Homoptera: Cicadellidae) from Pakistan

Newly Recorded Species in the Subfamily Deltocephalinae (Homoptera: Cicadellidae) from Pakistan

Host plant use and possibly defensive horns in <i>Trichochermes magna</i>(Psilidae: Homoptera)

En un muestreo hecho en febrero a junio en puntarenas, costa rica, cuatro árboles de psidolmedia oxphylaria (moraceae) tenian agallas huellas del insecto. un 7% de agallas mostraban signos de parasitacion o depreracion. la mayoria de las agallas estaban en hojas jovenes, pero no huvo correlación entre el tamaño de la hoja y el numero de agallas

On the subdivision of the family Lophopidae (Homoptera, Auchenorrhyncha: Fulgoroidea) on the subfamilies and tribes with description of two new tribes

A new classification of the family Lophopidae is proposed where it is subdivided intoe two subfamilies Menoscinae Melichar with four tribes (Carrioniini trib. n., Virgiliini trib. n., Menoscini Melichar, and Acarnini Baker) and Lophopinae Stal with two tribes (Elasmoscelini Melichar and Lophopini Stal).

APHID-INDUCED GALLS ON PISTACIA IN THE NATURAL MEDITERRANEAN FOREST OF ISRAEL: WHICH, WHERE, AND HOW MANY?

ABSTRACT Fifteen species of aphids belonging to the subfamily Fordinae (Pemphigidae, Homoptera) induce galls on wild Pistacia (Anacardiaceae) trees in Israel. In this paper I provide a summary of research on the distribution and abundance of the Fordinae in Israel, and indicate the principal ecological factors that may affect their geographical and genetical differentiation. The distribution of the Fordinae galls is primarily restricted by the ranges of their host trees, P. palaestina (8 galling species), P. atlantica (6), and P. lentiscus (1). Within these ranges, abundance of each galling species on individual trees depends on the location of the secondary host plants, on the ability of aphid spring migrants to recognize their primary host, and perhaps on genetical properties of the individual tree. Limited migratory ability of the aphids may result in genetic differentiation of geographical populations considered conspecific by morphological (taxonomical) criteria.

ECOLOGY OF THE GALL-FORMING APHID, SLAVUM WERTHEIMAE, ON PISTACIA ATLANTICA: POPULATION DYNAMICS AND DIFFERENTIAL HERBIVORY

ABSTRACT The aphid Slavum wertheimae HRL (Homoptera; Pemphigidae, Fordinae) is monoecious on its host tree, Pistacia atlantica (Anacardiaceae). S. wertheimae induces large, conspicuous, coral-shaped “cauliflower” galls and is very abundant on some trees, while rare or absent on others nearby. It is the only species among Israeli Fordinae which does not alternate between host plants. We investigated the changes in gall size, and in clone size of their aphid inhabitants, from 1994 to 1996, in order to understand the causes of differential herbivory. Gall abundance on male and female trees was similar, but galls on male trees were larger and contained twice as many aphids as those on female trees, suggesting sex-dependent resource allocation in the host plant. Trees heavily galled in 1994 were recolonized in 1995 and 1996, while other trees nearby remained uncolonized. Similarly, within galled trees, shoots on branches carrying old galls were more likely to be freshly galled than shoots on previously ungalle...

Новые роды и вид трибы Augilini (Homoptera: Caliscelidae)

Новые роды и вид трибы Augilini (Homoptera: Caliscelidae)

New synonyms, combinations, and faunistic records of Western Palaearctic planthoppers of the family Issidae (Homoptera, Fulgoroidea)

Within the frame of the study of the Western Palaearctic Issidae, two generic and four specific synonyms are established: Logvinenkoana Gnezdilov, 2002 is placed as a synonym for Anatolodus Dlabola, 1982; Falcidiopsis Kusnezov, 1930, for Kervillea Bergevin, 1918; Hysteropterum ignavum Dlabola, 1981, for Aeluropsis karabachica Logvinenko, 1975; Hysteropterum alciranum Gnezdilov, 2003, for Hysteropterum alicantium Dlabola, 1986; Hysteropterum tangirum Matsumura, 1910, for Hysteropterum guadarramense Melichar, 1906, and Mycterodus syriacus Gnezdilov, 2008, for Mycterodus bicornutus Dlabola, 1986. Subgenus Corymbius Gnezdilov, 2002 is upgraded to genus. 12 new generic combinations are established: Aeluropsis karabachica Logvinenko, 1975, A. midica Logvinenko, 1975, Hysteropterum pictifrons Melichar, 1906 and H. transcaucasicum Melichar, 1914 are transferred to the genus Anatolodus Dlabola, 1982; Bubastia carinata Logvinenko, 1978 and B. parva Logvinenko, 1977, to the genus Inflatodus Dlabola, 1982; Quadrastylum tubulatum Dlabola, 1989, to the genus Rhissolepus Emeljanov, 1971; Hysteropterum laminatum Horvath, 1911, to the genus Libanissum Dlabola, 1980; Hysteropterum drahamense Linnavuori, 1965, to the genus Bergevinium Gnezdilov, 2003; Conosimus ochaninei Puton, 1890, to the genus Quadriva Ghauri, 1965; Hysteropterum guadarramense Melichar, 1906, to the genus Tingissus Gnezdilov, 2003; Agalmatium corsicum Dlabola, 1982, to the genus Fieberium Dlabola, 1980. New faunistic records are given for 18 species.

Morphological variability and species borders in the genus Rhizopulvinaria (Homoptera: Coccinea)

The species considered in the genus Rhizopulvinaria were revised on the base of morphological and ecological data. Significant intraspecific morphological variability was shown for Rh. artemisiae s. l. The mode of life and reproductive biology of this species is briefly discussed. The majority of nominal species of Rhizopulvinaria described by different authors are considered to be morphological varieties of a single species Rh. artemisiae Signoret, 1873. Thus, the following species are placed in the synonymy of Rh. artemisiae: Rh. retamae (Hall, 1923), Rh. halli Borchsenius, 1957, Rh. turkestanica (Arkhangelskaya, 1931), Rh. grassei (Balachowsky, 1936), Rh. dianthi (Bodenheimer, 1943), Rh. nevesi (Gómez-Menor Ortega, 1946), Rh. armeniaca Borchsenius, 1952, Rh. grandicula Borchsenius, 1952, Rh. hissarica Borchsenius, 1952, Rh. megriensis Borchsenius, 1952, Rh. minima Borchsenius, Rh. pyrethri Borchsenius, 1952, Rh. spinifera Borchsenius, 1952, Rh. transcaspica Borchsenius, 1952, Rh. turkmenica Borchsenius, 1952, Rh. variabilis Borchsenius, 1952, Rh. virgulata Borchsenius, 1952, Rh. viridis Borchsenius, 1952, Rh. polispina Matesova, 1960, Rh. quadrispina Matesova, 1960, Rh. solitudina Matesova, 1960, Rh. zaisanica Matesova, 1960, Rh. arenaria Canard, 1967, Rh. gracilis Canard, 1967, Rh. maritima Canard, 1967, Rh. saxatilis Canard, 1967, Rh. rhizophila Bazarov, 1963, Rh. saxosa Shmelev, 1971, Rh. zygophylli Bazarov & Shmelev, 1975, Rh. ucrainica Tereznikova, 1981.

Character selection by information content in the numerical taxonomy of some male Batracomorphus (Homoptera: Cicadellidae

An attempt has been made to see how far taxonomic characters can be weighted by calculating their information content, as measured by methods due to Gyllenberg, Brillouin, and Shannon and Weaver. Thirty-nine species and subspecies of Batracomorphus were defined initially by 104 qualitative: characters. Subsets of 25 characters with the highest information content were then selected and ordinations of the taxa were made by principal coordinate component analysis for each subset. These ordinations were then compared with others based on randomly selected subsets of 25 characters as well as on the entire reference set of 104 characters. The results show that subsets of 25 characters with high information content yield ordinations that are similar to that based on the entire set and differ from those derived from randomly selected subsets. It follows that classifications based on characters of high information content will be relatively stable, showing little change when other characters of low information content are also included. It also appears that the characters with high information content correspond well to those that have been weighted more heavily in traditional, non-numerical classifications of the genus. Zusammenfassung Informationsgehalt als Kriterium fur die Auswahl von Merkmalen fur die numerische Taxonomie, dargestellt an einigen mannlichen Tieren von Batracomorphus (Homoptera: Cicadellidae) Es wurde der Versuch unternommen, den Informationsgehalt taxonomischer Merkmale mit Hilfe der Berechnungsmethoden von Gyllenberg, Brillouin and Shannon and Weaver abzuschatzen. Zunachst wurden 39 Arten and Unterarten der Gaming Batracomorphus aufgrund von 104 qualitativen Merkmalen definiert. Anschlieisend wurde eine Teilmenge von 25 Charakteren, die den hochsten Informationsgehalt hatten, ausgewahlt und die Taxa nach einer Komponentenanalyse gruppiert. Diese Gruppierungen wurden dann mit anderen Anordnungen verglichen, die entweder auf 25 zufallig ausgewahlten Merkmalen oder auf samtlichen 104 Merkmalen basierten. Die Ergebnisse zeigen, das die Gruppierung aufgrund der 25 Merkmale mit hohem Informationsgehalt sehr ahnlich ist der, die auf samtlichen Merkmalen beruht, aber von der Gruppierung nach 25 zufalligen Merkmalen verschieden ist. Daraus folgt, das eine auf Merkmalen mit grosern Informationsgehalt gestutzte Klassifikation relativ stabil ist und sich wenig andert, wenn andere Merkmale mit geringem Informationsgehalt mit einbezogen werden. Es zeigt sich auch, das die “hochinformativen” Merkmale (im Sinne Brillouin et al.), denjenigen Merkmalen entsprechen, die auch in der nichtnumerischen Taxonomie der Gattung Batracomorphus traditionell fur wichtig gehalten werden.

Aydın, İzmir ve Manisa illeri mısır alanlarında belirlenen Cixiidae ve Delphacidae (Homoptera) familyalarına bağlı türler üzerinde araştırmalar

Summary Species of Cixiidae and Delphacidae (Homoptera) on maize in Aydin, Izmir and Manisa provinces (Turkey) This study was conducted to determine species of Cixiidae and Delphacidae (Homoptera) families on maize in Aydin (Central Province, Cine, Kocarli, Soke), Izmir (Bergama, Menemen) and Manisa (Muradiye, Akhisar, Salihli, Saruhanli) provinces during 2004-2005. Surveys were carried out in first and second maize crop by using sweep-net and vacuum insect collector. At the end of the study, Cixius cunicularius Linnaeus, 1767 and Hyalesthes scotti Ferrari, 1882 from Cixiidae, Chloriona clavata Dlabola, 1960, Chloriona glaucescens Fieber, 1866, Flastena fumipennis (Fieber, 1866), Leodelphax striatellus (Fallen, 1826), Muellerianella fairmairei (Perris, 1857) and Kelisia melanops Fieber, 1878 from Delphacidae were determined. C. cunicularius, C. glaucescens and M. fairmairei are the first record for Turkish fauna.

Diyarbakır, Elazığ ve Mardin illeri bağ alanlarında bulunan Cicadellidae (Homoptera) türleri

Summary This study was conducted to determine species belonging to family Cicadellidae (Homoptera) inhabiting vineyards in Diyarbakir, Elazig and Mardin provinces (Turkey) between 2006 and 2007. In total, 34 leaf hoppers species from seven subfamilies Aphrodinae, Deltocephalinae, Hecalinae, Idiocerinae, Megophthalminae, Stegelytrinae and Typhlocybinae were recorded in these provinces. The distribution of collected species in each province varied greatly; these were in total, 22 species from six subfamilies recorded at seven sampling locations in Diyarbakir, 15 species from two subfamilies recorded at four sampling locations in Elazig, 23 species from six subfamilies at seven sampling locations in Mardin.

Effect of host density and host-parasitoid ratio on parasitization of Pyrilla perpusilla (Walker) by Epiricania melanoleuca (Fletcher).

Laboratory and field studies were carried out on the influence of host-parasitoid ratio on parasitism of Pyrilla perpusilla (Walker) (Homoptera: Lophopidae) by Epiricania melanoleuca (Fletcher) (Lepidoptera: Epipyropidae). Enhanced parasitism was observed with increased host-parasitoid ratio from 48.1 per cent at 1: 1 to 84.9% at 1: 4 ratios. Enhanced pupation was also observed with increase in the host-parasitoid ratio (46.1 to 79.6%). The host-parasitoid ratio of 1: 4 at 5 pyrilla per leaf was found optimum for mass multiplication of E. melanoleuca in laboratory conditions. Under field condition non-significant effect of life stages (nymphs 80.0 and adults 77.8%) of pyrilla was noticed on their parasitization by E. melanoleuca. In field conditions also, enhanced parasitization was noticed with increase in host-parasitoid ratios from 1: 1 to 1: 7, but 1: 3-1: 5 ratio at a host density of 5 pyrilla per leaf resulted in better increase in field parasitism.

Buğday yaprakbitleri, Rhopalosiphum padi (L.) ve Sitobion avenae (F.) (Homoptera: Aphididae)'nin buğdayda bazı verim özelliklerine etkileri ve popülasyon gelişmeleri

Population fluctuations of cereal aphids, Rhopalosiphum padi (L.) and Sitobion avenae (F.), (Homoptera: Aphididae) and their impact on crop loss parameters of wheat were revealed in Antakya during the years of 1998–2002. The aphid populations were recorded in infested and aphid-free plots in Reyhanli by seven day intervals from 22 February to 22 April, 1999 on two wheat varieties, “Genc-99” and “Ege-88”. Twenty plants were examined at each sampling date and alive induviduals (adult+nymph) were counted.

Anthocoris nemoralis (F.) (Heteroptera: Anthocoridae)'in üreme özelliklerine farklı avların etkisinin belirlenmesi

Summary Determination of the effects of different preys on the reproductive biology of Anthocoris nemoralis (F.) (Heteroptera: Anthocoridae) In order to make more effective of mass rearing of Anthocoris nemoralis (F.) (Heteroptera: Anthocoridae), rearing on Ephestia kuehniella Zell. (Lepidoptera: Pyralidae) under laboratory conditions, was aimed in this study. For this reason, the short term effects of different preys on preoviposition period and fecundity of A. nemoralis were investigated. E. kuehniella eggs were supplied for the prey of rearing of A. nemoralis. Tetranychus urticae Koch. (Acarina: Tetranychidae) and Cacopsylla pyri (L.) (Homoptera: Psyllidae) were supplied on third days of adult ages for 24 hours as prey to shorten the preoviposition period and to determine the fecundity. The study was carried out at 25±1°C, 60±10% RH, 16L:8D photoperiod and 2500 lux light intensity under controlled conditions. The study showed that the preoviposition period significantly shorten when T. urticae and C. pyri were served as prey for 8.44 days and 7.10 days, respectively. The preoviposition period of control group was found as 28.70 days when only E. kuehniella was served as prey. Longevity of females were found 84.89 days and 62.40 days, respectively and total numbers of eggs laid per female were 322.44 and 259.30, respectively, when T. urticae and C. pyri were served as prey for females. Net reproductive rate (Ro) were 304.25 females/female and 220.29 females/female and intrinsic rate of increase (rm) were 0.368 females/female/day and 0.400 females/female/day, respectively.

Mating interactions between okra and cassava biotypes of Bemisia tabaci (Homoptera: Aleyrodidae) on eggplant

Genetic and biological implications from interbreeding the Ghanaian okra and cassava biotypes of Bemisia tabaci (Gennadius), reared on eggplant, were studied in reciprocal crossing plans and crosses compared with parental generations using RAPD-PCR. Interbreeding did not affect fecundity of mated females and survival of F1 progeny. However, the sex ratio of the hybrid progeny was significantly male dominated (by 70% males) compared to purebred progeny of each biotype (>60% females) (P < 0.01). Each biotype was characterized by its own RAPD profiles. Hybrid females had one locus identical to that of both parents, while the males resembled the mother biotype at two loci. The F1 females were oviposited normally and there was a possible restricted gene flow between insects from the two biotypes, sharing the same host plant. However, the biological isolation seems to buttress ecological isolation in nature, hence maintaining the genetic and biological identity of sympatric populations in both biotypes. Les consequences des croisements entre deux biotypes de Bemisia tabaci (Gennadius), l’un du gombo et l’autre du manioc, sur le statut genetique et biologique de cet insecte ont ete evaluees sur l’aubergine. Les croisements sont compares aux generations parentales en utilisant la methode RAPD-PCR. Le croisement n’a pas affecte la fecondite des femelles et la survie de la descendance. Par contre, le sex-ratio des lignees hybrides comprend 70% de mâles contre plus de 60% de femelles chez la lignee pur-sang de chaque biotype (P < 0.01). Chaque biotype presente des profils RAPD-PCR specifiques. Les descendants femelles presentent un seul locus identique a celui de deux parents, alors que les hybrides mâles ressemblent au biotype maternel pour les deux locus. Les femelles hybrides pondent normalement mais il semble y avoir une possibilite limitee de flux de genes entre les deux biotypes se developpant sur une meme plante hote. Cependant, l’isolement biologique semble conforter l’existence de deux niches ecologiques dans la nature, favorisant ainsi le maintient de l’identite genetique et biologique des populations sympatriques des deux biotypes.

A new species of larval Erythraeus (Zaracarus) (Acari: Erythraeidae) from Turkey

Erythraeus (Zaracarus) aydinicus n. sp. is described and illustrated from larvae ectopara - sitic on Empoasca sp. (Homoptera: Cicadellidae) from Aydin, Turkey.

The Efficacy of Selected Predators Against White-Backed Planthopper (WBPH), Sogatella furcifera (Horvath) (Homoptera: Delphacidae) in Rice in Myanmar

The Efficacy of Selected Predators Against White-Backed Planthopper (WBPH), Sogatella furcifera (Horvath) (Homoptera: Delphacidae) in Rice in Myanmar

Three new species of Pamendanga Distant (Homoptera: Derbidae) from China

Three new species of Pamendanga Distant (Homoptera: Derbidae), viz., P. tongmaiensis, P. emeiensis and P.filaris are described from China.