caa a22 4500 386361770 CHVBK 20180307111918.0 cr unu---uuuuu 161130e198912 xx s 000 0 eng 10.4039/Ent1211041-12 doi S0008347X00035902 pii (NATIONALLICENCE)cambridge-10.4039/Ent1211041-12 DESCRIPTION OF THE LIFE STAGES OF MACROGLENES PENETRANS (KIRBY) (HYMENOPTERA: CHALCIDOIDEA, PTEROMALIDAE), A PARASITOID OF THE WHEAT MIDGE, SITODIPLOSIS MOSELLANA (GÉHIN) (DIPTERA: CECIDOMYIIDAE) [Elektronische Daten] The life stages of Macroglenes penetrans (Kirby), an egg-larval parasitoid of the wheat midge, Sitodiplosis mosellana (Géhin), are described. The mean length and width, respectively, of 25 parasitoid eggs deposited in host eggs were 0.105 ± 0.008 (SD) mm and 0.041 ± 0.006 mm. Mature oocytes were 0.131 ± 0.008 mm long by 0.038 ± 0.004 mm wide, slightly larger than laid eggs. A frequency distribution of head width (HW) indicated two larval instars during the feeding period. During development, the HW of the first instar remains almost constant at about 0.03 mm whereas body length (BL) increases from about 0.15 to about 0.3 mm. Both HW and BL increase in the second instar from about 0.15 and 0.49 to 0.34 and 1.05 mm, respectively, for mature larvae. The third instar does not feed and is characterized by hook-like "pseudomandibles" and four incurving spines on the terminal segment. The pupa is adectious exarate. Adults are about 2 mm long, shiny bluish-black, and have translucent wings. Males have prominent rust-coloured eyes; eyes of females are less prominent and fuscous. Copyright © Entomological Society of Canada 1989 Doane J.F. Agriculture Canada Research Station, Saskatoon, Saskatchewan, Canada S7N 0X2 DeClerck-Floate R. Agriculture Canada Research Station, Saskatoon, Saskatchewan, Canada S7N 0X2 Arthur A.P. Agriculture Canada Research Station, Saskatoon, Saskatchewan, Canada S7N 0X2 Affolter F. C.A.B. International Institute of Biological Contro1, Chemin des Grillons 1, CH-2800 Delémont, Switzerland The Canadian Entomologist Cambridge University Press 121/12(1989-12), 1041-1048 0008-347X 121:12<1041 1989 121 TCE https://doi.org/10.4039/Ent1211041-12 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.4039/Ent1211041-12 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Doane J.F. Agriculture Canada Research Station, Saskatoon, Saskatchewan, Canada S7N 0X2 NATIONALLICENCE 700 1- DeClerck-Floate R. Agriculture Canada Research Station, Saskatoon, Saskatchewan, Canada S7N 0X2 NATIONALLICENCE 700 1- Arthur A.P. Agriculture Canada Research Station, Saskatoon, Saskatchewan, Canada S7N 0X2 NATIONALLICENCE 700 1- Affolter F. C.A.B. International Institute of Biological Contro1, Chemin des Grillons 1, CH-2800 Delémont, Switzerland NATIONALLICENCE 773 0- The Canadian Entomologist Cambridge University Press 121/12(1989-12), 1041-1048 0008-347X 121:12<1041 1989 121 TCE CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge