Apr 152018
 

When I wrote about hoverfly sightings i added the caveat that they need verifying. I have now had almost all my records verified and any forthcoming will not alter the list.
This is the revised list.

Changes include:
My record of Cheilosia bergenstammi changes to Cheilosia pagana
My ‘Cheilosia proxima’ is possible but only identifiable to Cheilosia species
My ‘Riponnensia splendens’ was a Cheilosia species and Riponnensia splendens is removed from Mull list
My Melangyna umbellatarum changes to Melangyna compositarum/labiatarum and Melangyna umbellatarum is removed from Mull list
My ‘Platycheirus angustatus’ was wrong

I have added a cross for Melangyna lasiophthalma which I’ve been seeing this week. It needs verifying but Alan Skeates has also seen this species on Mull.

Mull hoverflies including immediate mainland. I have added a value to the status to allow for sorting.

Species (or species pairs) Frequency Distribution on Mull according to B&M Distribution in surrounding mainland (if absent Mull) Red Data Anand Prasad (Mull) Alan Skeates (Mull) Ball & Morris (Mull)
Melanostoma mellinum 1 Widespread 1 Most X X
Melanogster hirtella 1 Widespread 2 Most/Some X
Platycheirus granditarsus 1 Widespread 4 Some X
Chrysotoxum bicinctum 1 Widespread 4 Some X
Sphaerophoria interrupta 1 Widespread 4 Some X
Lejogaster metallina 1 Widespread 4 Some X
Eristalis tenax 1 Widespread 4 Some X
Volucella bombylans 1 Widespread 4 Some X X
Volucella pellucens 1 Widespread 4 Some X X
Criorhina berberina 1 Widespread 4 Some X
Baccha elongata 1 Widespread 7 Few X
Platycheirus clypeatus 1 Widespread 7 Few X
Platycheirus rosarum 1 Widespread 7 Few X
Dasysyrphus venustus 1 Widespread 7 Few X
Eupeodes luniger 1 Widespread 7 Few X
Eupeodes latifasciatus 1 Widespread 7 Few X
Platycheirus peltatus 1 Widespread 8 Few/None X X
Leucozona laternaria 1 Widespread 8 Few/None X
Melangyna lasiophthalma 1 Widespread 8 Few/None X X X
Epistrophe eligans 1 Widespread 8 Few/None X
Parasyrphus punctulatus 1 Widespread 8 Few/None X
Cheilosia bergenstammi 1 Widespread 8 Few/None X
Cheilosia fraterna 1 Widespread 8 Few/None X
Ferdinandea cuprea 1 Widespread 8 Few/None X
Cheilosia ranunculi/albitarsis 2 Widespread/Frequent 5 Some/Few X
Neoascia meticulosa/tenur 2 Widespread/Frequent 5 Some/Few X
Sericomyia lappona 3 Frequent 4 Some X
Cheilosia grossa 3 Frequent 8 Few/None X
Trichopsomyia flavitarsis 3 Frequent 7 Few X
Brachypalpoides lentus 3 Frequent 7 Few X
Cheilosia chrysocoma 4 Local 4 Some Scarce X
Microdon analis 4 Local 7 Few Scarce X
Microdon mutabilis 5 Rare 1 Most Data Deficient X
Xylota jakutorum 1 Widespread 4 Some
Leucozona lucorum 1 Widespread 5 Some/Few
Dasysyrphus tricinctus 1 Widespread 7 Few X
Cheilosia variabilis 1 Widespread 7 Few
Pipiza noctiluca 1 Widespread 7 Few
Cheilosia pagana 1 Widespread 8 Few/None X
Merodon equestris 1 Widespread 8 Few/None
Xylota sylvarum 1 Widespread 8 Few/None
Sphegina clunipes 1 Widespread 6 Some/Few/None
Pipizella viduata/virens 2 Widespread/Frequent 8 Few/None
Platycheirus tarsalis 3 Frequent 7 Few
Sphaerophoria rueppellii 3 Frequent 7 Few
Epistrophe grossulariae 3 Frequent 7 Few
Portevinia maculata 3 Frequent 7 Few
Eristalis rupium 3 Frequent 7 Few
Epistrophe nitidicollis 3 Frequent 8 Few/None
Parasyrphus vittiger 3 Frequent 8 Few/None
Cheilosia albipila 3 Frequent 8 Few/None
Anasimyia lineata 3 Frequent 8 Few/None
Sericomyia superbiens 3 Frequent 8 Few/None
Criorhina floccosa 3 Frequent 8 Few/None
Lejogaster tarsata 4 Local 8 Few/None
Episyrphus balteatus 1 Widespread 1 Most X X
Eristalis pertinax 1 Widespread 1 Most X X X
Helophilus pendulus 1 Widespread 1 Most X X X
Melanostoma scalare 1 Widespread 1 Most X X X
Platycheirus albimanus 1 Widespread 1 Most X X X
Platycheirus albimanus 1 Widespread 1 Most X X
Rhingia campestris 1 Widespread 1 Most X X
Sericomyia silentis 1 Widespread 1 Most X X X
Eristalis intricaria 1 Widespread 2 Most/Some X X X
Eristalinus sepulchralis 1 Widespread 2 Most/Some X X
Eupeodes corollae 1 Widespread 4 Some X X
Eristalis arbustorum 1 Widespread 4 Some X X X
Eristalis horticola 1 Widespread 4 Some X X
Myathropa florea 1 Widespread 4 Some X X
Platycheirus manicatus 1 Widespread 4 Some X X
Syritta pipiens 1 Widespread 4 Some X X
Syrphus ribesii 1 Widespread 4 Some X X X
Syrphus vitripennis / torvus 1 Widespread 4 Some X X X
Xylota segnis 1 Widespread 4 Some X X X
Neoascia podagrica 1 Widespread 5 Some/Few X X
Cheilosia illustrata 1 Widespread 7 Few X X
Eristalis nemorum 1 Widespread 7 Few X X
Helophilus trivittatus 1 Widespread 7 Few X X X
Meliscaeva auricollis 1 Widespread 7 Few X X X
Platycheirus angustatus 1 Widespread 7 Few X
Scaeva pyrastri 1 Widespread 7 Few X X
Platycheirus peltatus 1 Widespread 8 Few/None NWM X X
Meliscaeva cinctella 1 Widespread 8 Few/None NWM X X X
Platycheirus scutatus group 1 Widespread 9 None 5 Some/Few X
Chrysogaster solstitialis 1 Widespread 9 None 7 Few X
Dasysyrphus albostriatus 1 Widespread 9 None 8 Few/None X
Leucozona glaucia 1 Widespread 9 None 8 Few/None X X
Helophilus hybridus 1 Widespread 9 None 9 None X
Sphegina sibirica 3 Frequent 9 None 3 Most/Some/Few X
Chrysotoxum arcuatum 3 Frequent 9 None 5 Some/Few X
Eristalinus aeneus 3 Frequent 9 None 8 Few/None X X
Melangyna compositarum/labiatarum 3 Frequent 9 None 8 Few/None X
Xanthandrus comtus 3 Frequent 9 None 11 Scottish records only from Cairngorms, Borders and Dumfries & Galloway X
Cheilosia proxima 1 Widespread 9 None 9 None
Riponnensia splendens 1 Widespread 9 None 10 None in half of Scotland
Melangyna umbellatarum 3 Frequent 9 None 9 None
Key
Frequency (number of 10km squares with records)
Widespread = > 500
Frequent = 121-500
Local = 41-120
Scarce = 16-40
Rare = < 15
Distribution
Red = Most records
Orange = Some records
Green = Few records

Records from Mull (but not me)
Widespread Nationally
Most records
Melanostoma mellinum

Most/Some records
Melanogster hirtella

Some records
Platycheirus granditarsus
Chrysotoxum bicinctum
Sphaerophoria interrupta
Lejogaster metallina
Eristalis tenax
Volucella bombylans
Volucella pellucens
Criorhina berberina

Few records
Baccha elongata
Platycheirus clypeatus
Platycheirus rosarum
Dasysyrphus venustus
Eupeodes luniger
Eupeodes latifasciatus

Few/no records
Leucozona laternaria
Epistrophe eligans
Parasyrphus punctulatus
Cheilosia fraterna
Ferdinandea cuprea

Widespread/Frequent Nationally
Few/Some records
Cheilosia albitarsis/ranunculi
Neoascia tenur/meticulosa

Frequent Nationally
Some records
Sericomyia lappona

Few/no records
Cheilosia grossa

Few records
Trichopsomyia flavitarsis
Brachypalpoides lentus

Local Nationally
Some records
Cheilosia chrysocoma (Nationally scarce)

Few records
Microdon analis (Nationally scarce)

Rare Nationally
Most records
Microdon mutabilis

List of species with no records for Mull but records from immediate mainland.
So species which could be found on Mull.

Widespread Nationally
Some records
Xylota jakutorum

Some/Few records
Leucozona lucorum

Few records
Cheilosia variabilis
Pipiza noctiluca

Few/no records
Merodon equestris
Xylota sylvarum

Some/Few/no records
Sphegina clunipes

Widespread/Frequent Nationally
Few/no records
Pipizella viduata/virens

Frequent Nationally
Few records
Platycheirus tarsalis
Sphaerophoria rueppellii
Epistrophe grossulariae
Portevinia maculata
Eristalis rupium

Few/no records
Epistrophe nitidicollis
Parasyrphus vittiger
Cheilosia albipila
Anasimyia lineata
Sericomyia superbiens
Criorhina floccosa

Local Nationally
Few/no records
Lejogaster tarsata

Key
Frequency (number of 10km squares with records)
Widespread = > 500
Frequent = 121-500
Local = 41-120
Scarce = 16-40
Rare = < 15

Distribution
Red = Most records
Orange = Some records
Green = Few records

I looked through my hoverfly records to see what I should be seeing and to see which of those that I have seen are the most noteworthy.
First those that I have seen and later I’ll look at what I am missing but a quick glance told me that many that I’m missing are in grassland, woodland and wetland so next year I’ll look outside the garden. This is from the maps and status as given in Ball & Morris: Britain’s Hoverflies.
Many of these species are waiting verification (e.g. Riponnensia splendens looks a bit suspect judging by its scarcity in Scotland).

My species on Mull with most common descending to least common

Widespread Nationwide and many records from Mull
Episyrphus balteatus
Eristalis pertinax

Helophilus pendulus
Melanostoma scalare
Platycheirus albimanus
Platycheirus albimanus
Rhingia campestris
Sericomyia silentis

Widespread nationwide but only some records from Mull
Eristalis intricaria (orange/red on Mull)
Eristalinus sepulchralis (orange/red on Mull)
Eupeodes corollae

Eristalis arbustorum
Eristalis horticola
Myathropa florea
Platycheirus manicatus

Syritta pipiens
Syrphus ribesii
Syrphus vitripennis or torvus
Xylota segnis

Widespread nationwide but only few records from Mull
Neoascia podagrica (orange/green on Mull)
Cheilosia bergenstammi
(green/none on Mull)
Cheilosia illustrata

Eristalis nemorum
Helophilus trivittatus

Meliscaeva auricollis
Platycheirus angustatus
Scaeva pyrastri

Widespread nationwide a few some records from Mull but none from northwest Mull
Platycheirus peltatus
Meliscaeva cinctella

Widespread nationwide but no records from Mull
Chrysogaster solstitialis (green in surrounding area)
Dasysyrphus tricinctus  (green in surrounding area)

Platycheirus scutatus group (green/orange in surrounding area)
Dasysyrphus albostriatus (no records in parts of surrounding area)
Leucozona glaucia (no records in parts of surrounding area)
Cheilosia proxima (no records in surrounding area)
Helophilus hybridus (no records in surrounding area)
Riponnensia splendens (no records in half of Scotland)

Frequent nationwide but no records from Mull
Sphegina sibirica (green/orange/red in surrounding area)
Chrysotoxum arcuatum (green/orange in surrounding area)
Eristalinus aeneus (no records in parts of surrounding area)
Melangyna umbellatarum (no records in surrounding area)
Xanthandrus comtus (only Scottish records from Cairngorms, Borders and Dumfries & Galloway)

Key
Frequency (number of 10km squares where recorded)
Widespread = > 500
Frequent = 121-500 10

Distribution
Red = Most records
Orange = Some records
Green = Few records

 April 15, 2018