Gallery Links
Users Online
· Guests Online: 34

· Members Online: 0

· Total Members: 5,072
· Newest Member: Topopa
Forum Threads
Theme Switcher
Switch to:
Last Seen Users
· BLecaplain00:13:04
· libor00:32:14
· Carnifex00:34:39
· Jordi Clavell00:50:45
· Karsten Thomsen00:54:14
· Nosferatumyia02:21:56
· daveb2102:29:59
· eklans03:10:10
· weia03:29:43
· evdb03:39:52
Latest Photo Additions
View Thread
Diptera.info :: Family forums :: Syrphidae
Who is here? 1 guest(s)
 Print Thread
Hover fly from Hong Kong: a form of Episyrphus balteatus?
chickenold
#1 Print Post
Posted on 01-12-2013 17:11
User Avatar

Member

Location:
Posts: 338
Joined: 21.02.07

Photo taken yesterday. Could it be some blackened form of Episyrphus balteatus? Thanks!
chickenold attached the following image:


[134.09Kb]
 
Ectemnius
#2 Print Post
Posted on 01-12-2013 17:44
Member

Location: The Netherlands
Posts: 865
Joined: 22.11.11

Hello chickenold,

This is indeed Episyrphus balteatus. The amount of black is dependent on the temperature during pupation.

This is an inter-sex specimen with features of male and female strangely combined. The eyes are apart, but more closely then in a true female. There is also a bump on the tip of the abdomen, but not true genitalia of a male.

For a comparable tread:
http://www.diptera.info/forum/viewthread.php?thread_id=43483&pid=190611#post_190611

I do not know if the darker colouration is due to the temperature or the specimen being a mix of two sexes.

Greetings,

Ectemnius
Edited by Ectemnius on 01-12-2013 17:45
 
Jump to Forum:
Similar Threads
Thread Forum Replies Last Post
Which larvae? --> Episyrphus balteatus and Syrphus sp.3 Syrphidae 4 07-12-2025 23:13
Episyrphus balteatus ? Syrphidae 3 06-11-2025 12:45
--> Episyrphus balteatus (dark) Syrphidae 7 06-09-2024 20:53
Episyrphus balteatus. Tunisia Syrphidae 3 29-07-2024 11:21
Tachinidae (?) form Belgium 2022-06-30 for ID Diptera (adults) 3 06-05-2024 18:16
Date and time
13 December 2025 13:17
Login
Username

Password



Not a member yet?
Click here to register.

Forgotten your password?
Request a new one here.
Temporary email?
Due to fact this site has functionality making use of your email address, any registration using a temporary email address will be rejected.

Paul
Donate
Please, help to make
Diptera.info
possible and enable
further improvements!
Latest Articles
Syrph the Net
Those who want to have access to the Syrph the Net database need to sign the
License Agreement -
Click to Download


Public files of Syrph the Net can be downloaded HERE

Last updated: 25.08.2011
Shoutbox
You must login to post a message.

06.12.25 21:37
He last posted here in April, identifying some Chloropidae.

04.12.25 20:02
Dr Michael von Tschirnhaus, a leading expert on Chloropidae and Agromyzidae, died on 16 September 2025 at the age of 86. He will be greatly missed by the international community. R.I.P.

03.12.25 12:46
Anyone has the scan of "Harkness, R. D.; Ismay, J. W. 1976: A new species of Trachysiphonella (Dipt., Chloropidae) from Greece, associated with an ant Cataglyphis bicolor (F.) (Hym., Formicidae)

01.12.25 22:29
I will try to fix the messages this month. We have to make some other configuration changes before software goes out of support at end of year.

29.11.25 21:57
I would prefer not to receive any more messages from diptera.info signed by Paul... (Thread reply notification)... Could they be signed by ‘The diptera.info team’?

19.11.25 12:31
It is with deepest sadness in my heart that I announce that on Saturday, November 15, one of the great minds of world dipterology, prof. Rudolf Rozkošny, left us forever. Please remember him with a

15.08.25 10:15
For those specialists not active on Facebook, I just ask to consider to join our group on FB. Please, be aware that it is not necessary at all to be active on FB outside the diptera group. Actually, n

15.08.25 10:13
We received requests to get permission to ask for ID in our Facebook group, https://www.facebo
ok.com/groups/1798
95332035235/ Until now we pointed to diptera.info, but since Paul's passing we not

23.06.25 18:10
If you have some spare money, there is a copy (together with keys to pupae and larvae) for sale by Hermann L. Strack, Loguivy Plougras, France

23.06.25 11:18
Appreciate it, Tony Irwin! I got the hint to use the key next to Langton and Pinder key for females of Chironomidae. So no specific queries, except the keys... I will keep this on my list and hope th

Render time: 0.34 seconds | 251,815,392 unique visits