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Diptera.info :: Identification queries :: Diptera (adults)
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Vietnamese Tachinidae
DJHiker
#1 Print Post
Posted on 18-01-2024 02:08
Member

Location: Utrecht, NL
Posts: 423
Joined: 24.10.13

Tachnidae observed in the north of Vietnam in Mai Chau area, approx. alt. 150m
31 October 2023.
Looks a bit like the blue version of Tachina grossa.
Any suggestions?

Thanks in advance,
David

live.staticflickr.com/65535/53470902863_b2d470f686_z.jpg
 
Zeegers
#2 Print Post
Posted on 18-01-2024 11:47
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Location: Soest, NL
Posts: 18528
Joined: 21.07.04

It is a Mikia (related to Tachina)


Theo
 
DJHiker
#3 Print Post
Posted on 19-01-2024 12:57
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Location: Utrecht, NL
Posts: 423
Joined: 24.10.13

Thanks Theo.
Cheers,
David
 
John Carr
#4 Print Post
Posted on 23-01-2024 17:56
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Location: Massachusetts, USA
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Mikia lampros?
 
http://www.flickr.com/photos/31715949@N00
Zeegers
#5 Print Post
Posted on 23-01-2024 22:13
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Location: Soest, NL
Posts: 18528
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It is not M. tepens and I don’t have a key ….

Theo
 
John Carr
#6 Print Post
Posted on 23-01-2024 22:44
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Location: Massachusetts, USA
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Van der Wulp (1896) distinguished the species:

Door den goudgelen kop en de bruine, aan de basis gele vleugels
gelijkt deze soort op het eerste gezicht zoo zeer op E. tepens, dat
ik aanvankelijk meende haar voor eene lokale varieteit van deze
laatste te kunnen houden. Zij onderscheidt zich evenwel door de
glanzig zwarte kleur van het geheele lichaam, ook op het schildje
en aan de borstzijden (die bij tepens steeds roestkleurig zijn); door
de witte vleugelschubben (deze zijn bij tepens levendig geel); en vooral
door het derde sprietenlid, dat bijna even lang is als het tweede.
 
http://www.flickr.com/photos/31715949@N00
Zeegers
#7 Print Post
Posted on 24-01-2024 07:54
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Location: Soest, NL
Posts: 18528
Joined: 21.07.04

Van der Wulp keeps surprising me !

Theo
 
John Carr
#8 Print Post
Posted on 24-01-2024 11:26
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Location: Massachusetts, USA
Posts: 9841
Joined: 22.10.10

The key in Flies of China should include all Vietnamese species
of Mikia s. lat. It begins roughly

1a. 2-3 lateral scutellars, 3-4 dorsocentrals (some reduced),
acrostichals irregular, male with 1-3 orbitals, hind tibia usually
with three dorsal bristles ... 2

1b. Lateral scutellar absent, dorsocentrals 3+3, acrostichals 3+3;
cheeks with black bristles, male without orbitals, hind tibia
with 2 dorsal bristles ... remaining species

2a. Humeri, scutellum, and tergite 5 red or yellow, tergite 3
with 4-6 median marginals, first flagellomere shorter than pedicel,
male with 2-3 orbitals ... M. tepens

2b. Humeri and scutellum black, tergite 5 black or black and red,
first flagellomere about equal to pedicel, male with 1 orbital ... M. lampros

It is not stated if the antenna character applies to both sexes.

I just noticed the inner vertical bristles are not convergent,
unusual in tribe Tachinini.
 
http://www.flickr.com/photos/31715949@N00
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