BIOSYSTEMATICS OF THE GENUS EUXOA (LEPIDOPTERA: NOCTUIDAE) XVI. (Z)-5-DECENYL ACETATE A SEX ATTRACTANT FOR THREE CLOSELY RELATED SPECIES, EUXOA DECLARATA, EUXOA CAMPESTRIS, AND EUXOA ROCKBURNEI

1981 ◽  
Vol 113 (3) ◽  
pp. 245-249 ◽  
Author(s):  
E. W. Underhill ◽  
W. F. Steck ◽  
J. R. Byers ◽  
M. D. Chisholm

AbstractThe three closely related species of Euxoa cutworm moths comprising the declarata group gave identical male antennal responses to synthetic C10 to C18 alkenyl derivatives. An extract and a solution of the volatile emissions from E. campestris females when fractionated by gas chromatography yielded a single EAG-active fraction whose elution corresponded to a C10 acetate. The active component was assigned (Z)-5-decenyl acetate based on its mass spectrum and capillary GC retention time and the EAG responses of campestris males to isomeric decenyl acetates. Field trials demonstrated (Z)-5-decenyl acetate attracted males of all three species although it was not as attractive as live females. Attraction was suppressed by (Z)-5-dodecenyl actate, (Z)-7-dodecenyl alcohol, and (Z)-7-dodecenyl acetate.

1987 ◽  
Vol 119 (3) ◽  
pp. 301-303
Author(s):  
D.L. Struble ◽  
G.L. Ayre ◽  
J.R. Byers

The strawberry cutworm, Amphipoea interoceanica (Smith), has recently become an important pest of strawberry plants in Manitoba (Ayre 1980) and Quebec (Mailloux and Bostanian 1985). Larvae damage or kill the plants and commercial plantings are sometimes heavily damaged. Strawberry cutworm is widely distributed in North America and is broadly sympatric with a morphologically similar species, Amphipoea americana (Speyer) (Forbes 1954), which is occasionally a pest of corn (Gibson 1920). Sex pheromones of these species have not been reported, although Roelofs and Comeau (1971) found that males of strawberry cutworm were attracted to (Z)-9-tetradecenyl acetate (abbrev. Z9- 14:Ac). A sex attractant for strawberry cutworm would provide a convenient method for monitoring population levels in the vicinity of strawberry fields.


1979 ◽  
Vol 111 (7) ◽  
pp. 771-775 ◽  
Author(s):  
J.W. Arnold

AbstractThe length of mature, fusiform plasmatocytes is a suitable character for distinguishing between last instar larvae of the closely related species Euxoa annir (Streck) and E. lutulenta (Smith). This is a consistent character for a number of Euxoa species, but unreliable in E. altera (McD) where it changed in constant fashion during this stage. The relationship between plasmatocyte length and the duration of aestivation was also examined and showed no clear correlation.


Zootaxa ◽  
2004 ◽  
Vol 473 (1) ◽  
pp. 1 ◽  
Author(s):  
MICHAEL G. POGUE ◽  
CHARLES E. HARP

Four closely related species of Schinia are diagnosed using characters of maculation, genitalia, larval host plants, and distribution. The revised status of both Schinia albafascia Smith and Schinia brunnea Barnes and McDunnough are based on differences in wing maculation and male and female genitalic structures. The revised synonymy of Schinia megarena Smith with Schinia tertia (Grote) is discussed. Male and female genitalia are described and illustrated for the first time for all species.


1987 ◽  
Vol 42 (11-12) ◽  
pp. 1352-1354 ◽  
Author(s):  
Ernst Priesner

The title compound, unreported as an insect pheromone component, effectively attracted certain male Gelechiidae (genera Chionodes, Monochroa, Argolamprotes) as a sin­gle chemical. Trap captures with this chemical decreased on addition of either (E)-3-dodecenyl acetate. (E)-3-tetra- decenyl acetate or (Z)-3-tetradecen-1-ol. the sexual attractants of other, closely related species. Results on an Aproaerema test species showing a synergistic attraction response to combinations of (Z)-3-tetradecenyl acetate with its homologue (Z)-3-dodecenyl acetate are included.


1979 ◽  
Vol 111 (3) ◽  
pp. 337-341 ◽  
Author(s):  
W. F. Steck ◽  
D. L. Struble ◽  
C. E. Lilly ◽  
M. D. Chisholm ◽  
E. W. Underhill ◽  
...  

AbstractAdult Euxoa tristicula (Morrison) males were specifically attracted to traps baited with Z-9-dodecenyl acetate (Z9-12:Ac) + n-dodecyl acetate (12:Ac). Best attractancy was obtained with 1:3 ratios of these components. Z-5- and Z-7-dodecenyl acetates and Z-9-tetradecenyl acetate inhibited lure attractancy. In electroantennogram measurements strong antennal responses were obtained only with 12:Ac, Z9-12:AC, and E9-12:Ac.


2020 ◽  
Vol 43 ◽  
pp. 15-28
Author(s):  
Benjamin Wiesmair ◽  
Asghar Shirvani ◽  
László Ronkay

A new Orthosia species, O. habelerisp. nov., is described from Iran (Kerman, SE Zagros Mts), and compared with the allopatric, closely related species, O. manfredi Hreblay, 1994. The subgenus Orthosia and its three main lineages are characterised; the primary types of the taxa described by Staudinger and Hreblay & Plante are illustrated; the photographs of the male genitalia of the holotypes of O. manfredi Hreblay, 1994, O. ariuna Hreblay, 1991, O. faqiri Hreblay & Plante, 1994 and O. feda Hreblay & Plante, 1994, and the lectotype of O. incerta var. pallida Staudinger, 1888 are illustrated for the first time.


1975 ◽  
Vol 107 (10) ◽  
pp. 1095-1100 ◽  
Author(s):  
J. W. Arnold ◽  
C. F. Hinks

AbstractThe shape of one single category of hemocytes served as a critically distinguishing character between larvae of two closely related species of Euxoa (Lepidoptera: Noctuidae) that were otherwise practically identical in external features. The ratio of length/width of fusiform plasmatocytes in heat-fixed blood films was significantly smaller in larvae of E. campestris (Grote) than in E. declarata (Walker).


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