scholarly journals Seasonal Ecology and Thermal Constraints of Telenomus spp. (Hymenoptera: Scelionidae), Egg Parasitoids of the Hemlock Looper (Lepidoptera: Geometridae)

2012 ◽  
Vol 41 (6) ◽  
pp. 1290-1301 ◽  
Author(s):  
Simon Legault ◽  
Christian Hébert ◽  
Julie Blais ◽  
Richard Berthiaume ◽  
Eric Bauce ◽  
...  
Keyword(s):  
Egg Parasitoids ◽  
Thermal Constraints ◽  
Seasonal Ecology ◽  
Hemlock Looper

Species of Telenomus (Hymenoptera: Scelionidae) associated with the hemlock looper (Lepidoptera: Geometridae) in Canada

2003 ◽  
Vol 135 (1) ◽  
pp. 23-39 ◽  
Author(s):  
Georges Pelletier ◽  
Céline Piché
Keyword(s):  
British Columbia ◽  
Related Species ◽  
Egg Parasitoids ◽  
Closely Related Species ◽  
Egg Parasite ◽  
Hemlock Looper

AbstractThree species of Telenomus Haliday are egg parasitoids of the hemlock looper, Lambdina fiscellaria (Guenée), in Canada. Telenomus coloradensis Crawford and Telenomus droozi Muesebeck are redescribed and Telenomus flavotibiaesp.nov. is described and illustrated from material collected in Quebec. Telenomus coloradensis was found to be the predominant egg parasite, followed by T. droozi. Telenomus flavotibiae was found to be an uncommon parasite of hemlock looper eggs. All three species are recorded from Newfoundland to British Columbia. Keys to species of Telenomus associated with the hemlock looper, including two closely related species previously confused in the literature, are also given.

Optical isomers of 3,13-dimethylheptadecane: Sex pheromone components of the western false hemlock looper,Nepytia freemani (Lepidoptera: Geometridae)

1995 ◽  
Vol 21 (12) ◽  
pp. 2027-2045 ◽  
Author(s):  
G. G. Skip King ◽  
Regine Gries ◽  
Gerhard Gries ◽  
K. N. Slessor
Keyword(s):  
Sex Pheromone ◽  
Optical Isomers ◽  
Sex Pheromone Components ◽  
Pheromone Components ◽  
Hemlock Looper

scholarly journals Rearing Trissolcus japonicus and Trissolcus mitsukurii for Biological Control of Halyomorpha halys

Insects ◽  
2020 ◽  
Vol 11 (11) ◽  
pp. 787
Author(s):  
Giuseppino Sabbatini-Peverieri ◽  
Christine Dieckhoff ◽  
Lucrezia Giovannini ◽  
Leonardo Marianelli ◽  
Pio Federico Roversi ◽  
...  
Keyword(s):  
Biological Control ◽  
Control Method ◽  
Egg Parasitoids ◽  
Halyomorpha Halys ◽  
Progeny Production ◽  
Asian Origin ◽  
Frequent Use ◽  
Trissolcus Japonicus ◽  
Cumulative Curves

Halyomorpha halys is a severe agricultural pest of Asian origin that has invaded many countries throughout the world. Pesticides are currently the favored control methods, but as a consequence of their frequent use, often disrupt Integrated Pest Management. Biological control with egg parasitoids is seen as the most promising control method over the long-term. Knowledge of the reproductive biology under laboratory conditions of the most effective candidates (Trissolcus japonicus and Trissolcus mitsukurii) for optimizing production for field releases is strongly needed. Rearing of these egg parasitoids was tested by offering three different host supply regimes using new emerged females and aged, host-deprived females in different combinations. Results showed a mean progeny per female ranging from 80 to 85 specimens for T. japonicus and from 63 to 83 for T. mitsukurii. Sex ratios were strongly female biased in all combinations and emergence rates exceeded 94% overall. Cumulative curves showed that longer parasitization periods beyond 10–14 days (under the adopted rearing regimes) will not lead to a significantly increase in progeny production. However, ageing females accumulate eggs in their ovaries that can be quickly laid if a sufficient number of host eggs are supplied, thus optimizing host resources. Our data showed that offering H. halys egg masses to host-deprived female Trissolcus once a week for three weeks allowed its eggs to accumulate in the ovary, providing the greatest number of offspring within a three week span.

Three new Nearctic species of Telenomus (Hymenoptera: Scelionidae) attacking Tabanidae eggs

2004 ◽  
Vol 136 (1) ◽  
pp. 43-60 ◽  
Author(s):  
Mahmood Iranpour ◽  
Terry D. Galloway
Keyword(s):  
New Species ◽  
New World ◽  
Egg Parasitoids ◽  
Identification Key ◽  
Type Specimens ◽  
World Species ◽  
Diagnostic Characters ◽  
Three New Species

AbstractThree new species of Tabanidae egg parasitoids are described: Telenomus hybomitraesp. nov. and Telenomus utilissp. nov., both reared from eggs of Hybomitra nitidifrons nuda (McDunnough) and Hybomitra lasiophthalma Macquart, and Telenomus chrysopsissp. nov., reared from eggs of Chrysops aestuans Wulp, Chrysops excitans Walker, and Chrysops mitis Osten Sacken. Specimens of these species were compared with type specimens of known New World species of scelionid parasitoids attacking tabanid eggs. Diagnostic characters and identification key to the Nearctic species are provided.

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