The Dixa inextricata Dyar & Shannon (Diptera: Dixidae) species group, with two new cryptic species from the eastern Nearctic Region
Author
Moulton, John K.
text
Zootaxa
2016
4121
4
458
472
journal article
38894
10.11646/zootaxa.4121.4.6
4247868c-80b8-43b6-9ef7-7feced83afe1
1175-5326
265286
F15F9CC4-A5CE-45D9-94F7-7C112AE71544
Key to males of
D. inextricata
group
1 Cercus acute apically, its length subequal to or greater than proctiger lateral width (
Figs 10
,
15, 17
). Ventral margin of gonostylus bulbous (
Fig. 10
). Basal gonocoxal lobe rectangular in ventral view (
Fig. 16
), its apex strongly falcate in lateral view (
Figs 10
,
15
). Apical gonocoxal lobe blunt, rounded in lateral view, not digitiform (
Figs 10
,
15
)............
calciphilum
sp. nov.
- Cercus blunt apically, its length ca. one-half that of proctiger lateral width (
Figs 9, 11
,
12, 18
). Ventral margin of gonostylus not strongly bulbous convex (
Figs 9, 11
,
12, 18
). Basal gonocoxal lobe digitiform in ventral view (
Figs 13, 19
), its apex in lateral view subovoid-round, not strongly falcate (
Figs 9, 11
,
12, 18
). Apical gonocoxal lobe digitiform (
Figs 9, 11
,
12, 18
).... 2
2 Gonostylus less than 1.5X longer than greatest width in lateral view, with ventral margin slightly convex (
Figs 9
,
12
). Basal gonocoxal lobe oval-round, directed dorsally.............................................
appalachiensis
sp. nov.
- Gonostylus
2X
longer than greatest width in lateral view, with ventral margin straight or slightly concave (
Figs 11
,
18
). Basal gonocoxal lobe subovoid, directed posterodorsally, its distal margin indented slightly........................
inextricata