We have found the salivary sheaths from leafhoppers in leaves at least 1 month after they had been fed on. I have not tried to test later.

Hi Rebecca

Do you mind telling me what leafhopper species, what host plant, and was it under lab or field conditions? I am testing this on psyllids now, and would like to know what other people found with other hemipterans. Thanks. Desouky

It was the beet leafhopper, Circulifer (Neoalituris) tenellus. It was done in the lab and was done on several different types of plants including peppers, sugarbeets, and tomatoes.

Rebecca

Dear Desouky,

I have been working with a planthopper Delphacodes kuscheli, vector of a virus of maize in Argentina. (Hemiptera Delphacidae).  I detected the salivary sheaths in leaf tissues but I fixed the material after 48 hs feeding.

I think that deposits remains in the leaf tissues for a long time maybe up to de senescence of leaves.

When I started with the identification of salivary deposits I read the paper of Miles 1972.(The saliva of Hemiptera). I dont know really if there are more specific studies on this topic.

M Eugenia

Thanks all.

39  

Hi El-Desouky Ammar

Many references on attachment 1

https://aesa.oxfordjournals.org/content/105/5/731

2

https://www.sciencedirect.com/science/article/pii/S2213879X16000067

3

https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0088483

4

https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0088483

5

https://books.google.com/books?isbn=1490107398

6

https://journal.frontiersin.org/article/10.3389/fpls.2013.00336/full

7

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3935659/

8

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3935659/

9

https://books.google.com/books?isbn=052111389X

10

https://www.fs.fed.us/nrs/pubs/jrnl/2014/nrs_2014_oten_001.pdf

11

https://books.google.com/books?isbn=0801438276

12

https://books.google.com/books?isbn=1444317679

13

https://www.amjbot.org/content/85/4/449.full.pdf

14

https://books.google.com/books?isbn=1351647040

15

https://www.chemlife.umd.edu/entm/lamp/publications/DeLay2012.pdf

16

https://ag.udel.edu/delpha/4645.pdf

17

https://books.google.com/books?isbn=0801420660

18

https://www.cambridge.org/core/journals/bulletin-of-entomological-research/article/feeding-activities-of-cicadulina-mbila-hemiptera-cicadellidae-on-different-hostplants/53A18D46189968133A2A08D038751981

19

http://www.dominikmatus.cz/files/Kerria%20Lacca/Mouthparts%20and%20stylet%20penetration%20of%20the%20lac%20insect%20Kerria%20lacca.pdf

20

https://doi.org/10.1093/jee/tov149

Dear Laith

A.A. Thank you for mentioning several references on salivary sheaths and salivary glands including some of my papers. The question is: does any of these references mention how long the salivary sheaths last in the host plant? Thanks. Desouky ammar