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Title: Nesting biology, morphological remarks, and description of the mature larva of Mellinus arvensis obscurus (Hymenoptera: Crabronidae) in Nepal

Abstract

Recently re-named as a sub-species of Mellinus arvensis, Mellinus arvensis obscurus Handlirsch 1888 was investigated ecologically and morphologically in Nepal, in order to underline the most important differences with the well known M. arvensis arvensis. Mellinus arvensis obscurus females nested in clumped aggregations on inclined plains at high altitudes, both on sunny bare soil and on a shaded grassy one. Beginning of monsoon season probably interfered with wasp activity, and females performed few provisioning flights during the day. Prey consisted of a broad range of Diptera, except for one case of a spider. Many females were observed not provisioning a nest but floating on the nesting site, and many intraspecific interactions suggested a high degree of usurpation attempts. At least one species of flies and two of ants probably acted as natural enemies of the wasp. Morphological observations on females showed that the Nepal population shares more similarities (shape of tergite I, body punctation) with the European populations than with the closer Japanese population; melanization is strong, according to west-east and altitudinal cline. The mature larva of M. arvensis obscurus Handlirsch is described, illustrated, and compared with the other mature larva of the genus. The differences between both larvae mainlymore » lie in the presence/absence, and number or differentiation of integumental structures. We conclude that morphological traits are more important than ecological and behavioral ones in distinguishing M. arvensis obscurus from M. arvensis arvensis. (author) [Spanish] En el presente articulo se aportan los resultados y conclusiones de un estudio, llevado a cabo en Nepal, en el que se abordaron aspectos ecologicos, comportamentales y morfologicos (tanto del ultimo estado de la fase larvaria como del adulto) de Mellinus arvensis obscurus Handlirsch 1888. El principal objetivo del estudio radicaba en mostrar las principales diferencias que separan a esta subespecie de la bien estudiada subespecie nominal. Mellinus arvensis obscurus nidifica a gran altitud, en terreno inclinado, con y sin vegetacion, expuesto en mayor o menor medida al sol y en agregaciones muy compactas. Durante la estacion lluviosa la hembras llevan a cabo pocos vuelos de aprovisonamiento. Las presas pertenecen al orden de los dipteros, aunque, en una ocasion se observo el aporte de una arana. Gran numero de las interacciones intraespecificas observadas sugieren un alto grado de intentos de usurpacion de nidos. Los enemigos naturales mas sobresalientes pertenecen al orden de los dipteros y a la familia de los formicidos. Del estudio morfologico del adulto, mencionaremos que la foma del terguito 1 y la escultura del cuerpo, en las hembras de las poblaciones del Nepal, son mas semejantes a los de las hembras de las poblaciones europeas que no a los de las japonesas. De la fase larvaria se describe el ultimo estado larvario, a la vez que se compara con la otra larva madura ya descrita del genero. Las diferencias entre ambas larvas maduras radican en la presencia/ausencia, numero o diferenciacion de las estructuras tegumentarias. El estudio finaliza concluyendo que los rasgos morfologicos son mas importantes, que los aspectos ecologicos y comportamentales, a la hora de establecer una separacion entre las dos subespecies (author)« less

Authors:
; ;  [1]; ; ;  [2]
  1. Dipartimento di Biologia, Sezione di Zoologia e Citologia, Universita degli Studi di Milano-Via Celoria, 26, 20133, Milan (Italy)
  2. Unidad de Zoologia, Facultad de Biologia, Universidad de Salamanca-37071, Salamanca (Spain)
Publication Date:
OSTI Identifier:
20942927
Resource Type:
Journal Article
Resource Relation:
Journal Name: Florida Entomologist; Journal Volume: 90; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); DOI: 10.1653/0015-4040(2007)90[184:NBMRAD]2.0.CO;2; DOI: 10.1653/0015-4040(2007)90[184:NBMRAD]2.0.CO;2; Spanish abstract translation provided by the authors; Refs, 8 figs
Country of Publication:
United States
Language:
English
Subject:
60 APPLIED LIFE SCIENCES; ALTITUDE; ANTS; FLIES; LARVAE; MORPHOLOGY; NESTS; PEST CONTROL; REPRODUCTION; SEASONAL VARIATIONS; SPIDERS; WASPS

Citation Formats

Boesi, R., Polidori, C., Andrietti, F., Gayubo, S.F., Tormos, J., and Asis, J.D.. Nesting biology, morphological remarks, and description of the mature larva of Mellinus arvensis obscurus (Hymenoptera: Crabronidae) in Nepal. United States: N. p., 2007. Web. doi:10.1653/0015-4040(2007)90[184:NBMRAD]2.0.CO;2; DOI: 10.1653/0015-4040(2007)90[184:NBMRAD]2.0.CO;2; SPANISH ABSTRACT TRANSLATION PROVIDED BY THE AUTHORS; REFS, 8 FIGS.
Boesi, R., Polidori, C., Andrietti, F., Gayubo, S.F., Tormos, J., & Asis, J.D.. Nesting biology, morphological remarks, and description of the mature larva of Mellinus arvensis obscurus (Hymenoptera: Crabronidae) in Nepal. United States. doi:10.1653/0015-4040(2007)90[184:NBMRAD]2.0.CO;2; DOI: 10.1653/0015-4040(2007)90[184:NBMRAD]2.0.CO;2; SPANISH ABSTRACT TRANSLATION PROVIDED BY THE AUTHORS; REFS, 8 FIGS.
Boesi, R., Polidori, C., Andrietti, F., Gayubo, S.F., Tormos, J., and Asis, J.D.. Thu . "Nesting biology, morphological remarks, and description of the mature larva of Mellinus arvensis obscurus (Hymenoptera: Crabronidae) in Nepal". United States. doi:10.1653/0015-4040(2007)90[184:NBMRAD]2.0.CO;2; DOI: 10.1653/0015-4040(2007)90[184:NBMRAD]2.0.CO;2; SPANISH ABSTRACT TRANSLATION PROVIDED BY THE AUTHORS; REFS, 8 FIGS.
@article{osti_20942927,
title = {Nesting biology, morphological remarks, and description of the mature larva of Mellinus arvensis obscurus (Hymenoptera: Crabronidae) in Nepal},
author = {Boesi, R. and Polidori, C. and Andrietti, F. and Gayubo, S.F. and Tormos, J. and Asis, J.D.},
abstractNote = {Recently re-named as a sub-species of Mellinus arvensis, Mellinus arvensis obscurus Handlirsch 1888 was investigated ecologically and morphologically in Nepal, in order to underline the most important differences with the well known M. arvensis arvensis. Mellinus arvensis obscurus females nested in clumped aggregations on inclined plains at high altitudes, both on sunny bare soil and on a shaded grassy one. Beginning of monsoon season probably interfered with wasp activity, and females performed few provisioning flights during the day. Prey consisted of a broad range of Diptera, except for one case of a spider. Many females were observed not provisioning a nest but floating on the nesting site, and many intraspecific interactions suggested a high degree of usurpation attempts. At least one species of flies and two of ants probably acted as natural enemies of the wasp. Morphological observations on females showed that the Nepal population shares more similarities (shape of tergite I, body punctation) with the European populations than with the closer Japanese population; melanization is strong, according to west-east and altitudinal cline. The mature larva of M. arvensis obscurus Handlirsch is described, illustrated, and compared with the other mature larva of the genus. The differences between both larvae mainly lie in the presence/absence, and number or differentiation of integumental structures. We conclude that morphological traits are more important than ecological and behavioral ones in distinguishing M. arvensis obscurus from M. arvensis arvensis. (author) [Spanish] En el presente articulo se aportan los resultados y conclusiones de un estudio, llevado a cabo en Nepal, en el que se abordaron aspectos ecologicos, comportamentales y morfologicos (tanto del ultimo estado de la fase larvaria como del adulto) de Mellinus arvensis obscurus Handlirsch 1888. El principal objetivo del estudio radicaba en mostrar las principales diferencias que separan a esta subespecie de la bien estudiada subespecie nominal. Mellinus arvensis obscurus nidifica a gran altitud, en terreno inclinado, con y sin vegetacion, expuesto en mayor o menor medida al sol y en agregaciones muy compactas. Durante la estacion lluviosa la hembras llevan a cabo pocos vuelos de aprovisonamiento. Las presas pertenecen al orden de los dipteros, aunque, en una ocasion se observo el aporte de una arana. Gran numero de las interacciones intraespecificas observadas sugieren un alto grado de intentos de usurpacion de nidos. Los enemigos naturales mas sobresalientes pertenecen al orden de los dipteros y a la familia de los formicidos. Del estudio morfologico del adulto, mencionaremos que la foma del terguito 1 y la escultura del cuerpo, en las hembras de las poblaciones del Nepal, son mas semejantes a los de las hembras de las poblaciones europeas que no a los de las japonesas. De la fase larvaria se describe el ultimo estado larvario, a la vez que se compara con la otra larva madura ya descrita del genero. Las diferencias entre ambas larvas maduras radican en la presencia/ausencia, numero o diferenciacion de las estructuras tegumentarias. El estudio finaliza concluyendo que los rasgos morfologicos son mas importantes, que los aspectos ecologicos y comportamentales, a la hora de establecer una separacion entre las dos subespecies (author)},
doi = {10.1653/0015-4040(2007)90[184:NBMRAD]2.0.CO;2; DOI: 10.1653/0015-4040(2007)90[184:NBMRAD]2.0.CO;2; SPANISH ABSTRACT TRANSLATION PROVIDED BY THE AUTHORS; REFS, 8 FIGS},
journal = {Florida Entomologist},
number = 1,
volume = 90,
place = {United States},
year = {Thu Mar 15 00:00:00 EDT 2007},
month = {Thu Mar 15 00:00:00 EDT 2007}
}