38 research outputs found
Revision of Newsteadia (Homoptera: Coccoidea) of the Nearctic and Neotropic Regions, with Descriptions of New Species
Six new species of Newsteadia are described from the Nearctic and Neotropic Regions. A key is presented for the identification of 10 species currently included in the genus from these regions. The number of species in the genus worldwide is 37. A modified concept of the genus is presented and some new characters are given as diagnostic of the genus. The zoogeography of the genus is discussed
Changing of flight phenology and ecotype expansion of the European corn borer (Ostrinia nubilalis Hbn.) in Hungary Part
The studies aimed to acquire the widest possible information on the annual flight in Hungary of the European corn borer (ECB), Ostrinia nubilalis Hübner (Lepidoptera: Pyralidae). The investigations used biomathematical (Part 1) and graphical (Part 2) evaluation to document changes in the individual population number.The study was conducted in Hungary using ECB moth capture records from the Plant Protection Information System black light trap system (1991–2004). We have drawn conclusions on the appearance of annual flights and the tendency of alterations in flight direction by means of light trap results in four different areas in Hungary. We calculated the flight peak quotients, the individual population numbers of the second flight peak, the distinctions of individual numbers of two flight peaks in this part.As previously published, alterations in flight direction of ECB flights began at different times in Hungary. In the current study, a gradual disappearance of the univoltine ecotype and gradual appearance of the bivoltine ecotype ECB in Hungary is confirmed by the data obtained between 1991–2004. Flight peak quotients and data concerning the second flight peak have confirmed change this process, too: the appearance of a second flight peak in Northwestern Hungary from 1995–1996 (FP = 1.27), the more significant appearance of flights in August in Western Hungary (FP = 1.05) and Northeastern Hungary (FP = 1.45), and a three and four times more individual number of the second flight peak in Southeastern Hungary (FP = 3.44). Flight peak quotients, individual population numbers of the second flight peak, the tendency towards a difference in population number of the two peaks, and size of increase of these values demonstrates the southeastern-northwestern presence of the bivoltine ecotype in Hungary
A geographical study on Pseudaulacaspis pentagona and its parasitoids in Hungarian highway margins using pheromone traps and molecular markers
Πραγματοποιήθηκε μελέτη διασποράς του Pseudaulacaspis pentagona (Targioni Tozzetti) (Hemiptera: Diaspididae) και των παρασιτοειδών του σε 32 σημεία κατά μήκος των Ουγγρικών αυτοκινητοδρόμων (M0, M1, M3, M5, και M7) με τη χρήση φερομονικών παγίδων κατά τα έτη 2009 και 2010. Κατά τη μελέτη νέα σημεία συμπεριλήφθηκαν και σε συνδυασμό με προηγούμενα δεδομένα έγινε προσπάθεια κατανόησης της τάσης διασποράς του εντόμου. Ο αριθμός αρσενικών στους αυτοκινητοδρόμους ήταν χαμηλότερος σε σχέση με σημεία κοντά σε πόλεις (M0). Τα δεδομένα συνάδουν με αυτά άλλων μελετών όπου συμπεραίνεται ότι το είδος P. pentagona διασπείρεται μέσω οχημάτων κατά μήκος των αυτοκινητοδρόμων (“transport vector”). Η σημαντική μείωση των συλλήψεων αρσενικών από το 2007 έως το 2010 μπορεί να σηματοδοτεί την έναρξη μιας περιόδου χαμηλού πληθυσμού του εντόμου στην Ουγγαρία. Οκτώ διαφορετικά είδη παρασιτοειδών βρέθηκαν στις φερομονικές παγίδες. Το παρασιτοειδές Coccophagus sp. ήταν το κυρίαρχο είδος, ωστόσο ενδεχομένως να προέρχεται από άλλο κοκκοειδές. Η ταυτότητα των αρρένων κοκκοειδών καθώς και ενός παρασιτοειδούς επαληθεύτηκε με μοριακούς δείκτες.A study has been conducted to monitor geographical spread of the white peach scale Pseudaulacaspis pentagona (Targioni Tozzetti) (Hemiptera: Diaspididae) (WPS) and its parasitoid populations in 32 stops of the Hungarian highways (M0. M1, M3, M5 and M7) using pheromone traps during 2009 and 2010. In addition to the data collected in the current study, previous data were used to investigate the population trend of this pest from 2007 to 2010. The number of males recorded in traps placed on highways was much lower than in the sites close to urban areas (M0). Our data support results of previous studies which suggest the spreading of white peach scale by vehicles (“transport vector”). The significant decrease in the WPS male catches from 2007 to 2010 might indicate the lowering of the population levels of this pest in the area of the study. Eight hymenopterous parasitoid species were captured in pheromone traps. Coccophagus sp. was the predominate species in pheromone traps of WPS in M7, how-ever they may be associated with another coccid species. The identity of scale males and some parasitoids was proved by molecular markers
Within-plant distribution of cotton aphid (Hemiptera: Aphididae) in cotton cultivars with colored fibers
Systematic analysis of Afrotropical Newsteadia (Hemiptera, Coccoidea: Ortheziidae) with descriptions of nine new species
Adult females of nine new species of Newsteadia ortheziids are described and detailed redescriptions are provided for the four species previously known from the Afrotropical Region including N. gomyi Richard, N. mauritiana Mamet, N. montana Mamet and N. wacri Strickland. A key is presented for the 13 species known to occur in the area and a detailed discussion is presented on the homology of the wax plates that cover the body of these fascinating scale insects
Soft scale insect (Hemiptera: Coccoidea) species of Eastern Anatolia of Turkey
This study aimed to identify soft scale insect species in five provinces (Ağrı, Bitlis, Hakkari, Iğdır and Van) in Eastern Anatolia. Species of the family Coccidae were collected from natural and cultivated plants between 2005 and 2008. In total, 31 species in 17 genera were found, including fifteen new species records for the Turkish scale insect fauna, namely:
Didesmococcus unifasciatus, Eulecanium caraganae, Eulecanium ficiphilum, Lecanopsis subterranea, Lecanopsis taurica, Pulvinaria tremulae, Rhizopulvinaria armeniaca, Rhizopulvinaria dianthi, Rhizopulvinaria grandicula, Rhizopulvinaria hissarica, Rhizopulvinaria megriensis, Rhizopulvinaria turkmenica, Rhizopulvinaria variabilis, Rhodococcus turanicus
and
Vittacoccus longicornis
Species list of the scale insects (Hemiptera, Coccoidea) of Romania, with new data
The scale insect fauna of Romania is poorly known. Based on bibliographic sources and on collections made by the authors a complete checklist is presented. The number of scale insect species presented here from Romania is the following: 178 from outdoor and 29 species from indoor and greenhouse condition. The outdoor species belong to 9 families and 4 families for indoor species. The most numerous outdoor families were: Pseudococcidae (67 species), Coccidae (42 species), Diaspididae (37 species) and Eriococcidae (16 species). Most of the indoor species belong to: Diaspididae (20 species).The present paper contains data of 5 families and 28 species with collecting places, recording data.Three species were new for the scale insect fauna of the country:
Spilococcus nanae
Schmutterer, 1957,
Spinococcus calluneti
(Lindinger, 1912) and
Rhizoecus albidus
, Goux, 1936
New and little known scale insect species (Hemiptera: Coccoidea) in Turkey
Scale insects (Hemiptera: Coccoidea) are notorious pests, especially of perennial plants. They are serious pests of fruit and nut trees, ornamental shade trees and shrubs, forest trees, greenhouse and indoor plantings. In the present study, new data are given for 13 species of scale insects from Turkey as follows: Coccidae (1 sp.), Cerococcidae (1 sp.), Diaspididae (2 spp.), Pseudococcidae (8 spp.) and Rhizoecidae (1 sp.). Chorizococcus malabadiensis Kaydan sp. n. is described and illustrated as a new species and 8 species are recorded for the first time from Turkey