Taxonomic notes on the Volucella pellucens species group (Diptera: Syrphidae) with a description of one new species from the Eastern Palaearctic
Author
Choi, Deuk-Soo
Department of Life Science, Yonsei University, Wonju-si, Gangwon-do 220 - 710, Korea.
Author
Ôhara, Kenji
Tokushima Prefectural Museum, Bunkanomori Park, Hachiman-cho, Tokushima 770 - 8070, Japan.
Author
Han, Ho-Yeon
Department of Life Science, Yonsei University, Wonju-si, Gangwon-do 220 - 710, Korea.
text
Zootaxa
2006
2006-04-24
1185
1
19
journal article
10.11646/zootaxa.1185.1.1
c3e2c5f5-a553-4b7b-8b99-fe071d482cba
11755334
4920432
59D95AB0-7B54-4AC5-BCD1-6B113153F842
Key to the species of the
Volucella pellucens
species group
1. Legs with apexes of femora, bases of tibiae, and basotarsomeres yellowish brown (
Figs. 5F, H
); head with upper postocular orbit clearly seen in lateral view (
Figs. 2C, F
).................................................................................................
inflata
(Fabricius)
Legs almost entirely dark brown to black (e.g.
Figs. 5B, D
); head with upper postocular orbit barely seen in lateral view (e.g.
Figs. 1C, F
)................................................... 2
2. Abdominal tergite 2 predominantly black with a pair of pale transverse areas, at most 2/3 of tergite length (
Figs. 5I, K
)
....................................................
nigricans
Coquillett
Abdominal tergite 2 almost entirely pale except for narrow median longitudinal stripe in yellow brown to dark brown (e.g.
Figs. 5A, C
) ........................................................ 3
3. Abdominal tergite 2 longer than tergite 3 when measured medially; male basoflagellomere in lateral view slightly constricted in middle (
Fig. 1C
); male eye contiguity about half as long as frontal triangle (
Fig. 1B
); female eyes densely pilose (
Fig. 1F
)
..................................................................................................
thompsoni
n.sp.
Abdominal tergite 2 slightly but clearly shorter than tergite 3 when measured medially; male basoflagellomere in lateral view transversely elliptic (
Fig. 4D
); male eye contiguity about as long as frontal triangle (
Figs. 4B, C
); female eyes bare (
Fig. 4G
) 4
4. Female scutum posteriorly without distinct brown triangular macula, or occasionally with faint brownish tinge (
Figs. 5O
,
6A, B
)
..................
pellucens
pellucens
(Linnaeus)
Female scutum posteriorly with distinct brown triangular macula (
Figs. 5S
,
6C, D
).....
..................................................................................
pellucens
tabanoides
Motschulsky