Dixa inextricata

Moulton, John K., 2016, The Dixa inextricata Dyar & Shannon (Diptera: Dixidae) species group, with two new cryptic species from the eastern Nearctic Region, Zootaxa 4121 (4), pp. 458-472 : 470-471

publication ID	https://doi.org/ 10.11646/zootaxa.4121.4.6
publication LSID	lsid:zoobank.org:pub:F15F9CC4-A5CE-45D9-94F7-7C112AE71544
DOI	https://doi.org/10.5281/zenodo.6078349
persistent identifier	https://treatment.plazi.org/id/03F37E07-6F42-4109-FF40-30DFFC96FF1F
treatment provided by	Plazi
scientific name	Dixa inextricata
status

Treatment

Key to males of D. inextricata View in CoL group

1 Cercus acute apically, its length subequal to or greater than proctiger lateral width ( Figs 10 View FIGURES 9 – 11 , 15, 17 View FIGURES 12 – 20 ). Ventral margin of gonostylus bulbous ( Fig. 10 View FIGURES 9 – 11 ). Basal gonocoxal lobe rectangular in ventral view ( Fig. 16 View FIGURES 12 – 20 ), its apex strongly falcate in lateral view ( Figs 10 View FIGURES 9 – 11 , 15 View FIGURES 12 – 20 ). Apical gonocoxal lobe blunt, rounded in lateral view, not digitiform ( Figs 10 View FIGURES 9 – 11 , 15 View FIGURES 12 – 20 )............ calciphilum sp. nov.

- Cercus blunt apically, its length ca. one-half that of proctiger lateral width ( Figs 9, 11 View FIGURES 9 – 11 , 12, 18 View FIGURES 12 – 20 ). Ventral margin of gonostylus not strongly bulbous convex ( Figs 9, 11 View FIGURES 9 – 11 , 12, 18 View FIGURES 12 – 20 ). Basal gonocoxal lobe digitiform in ventral view ( Figs 13, 19 View FIGURES 12 – 20 ), its apex in lateral view subovoid-round, not strongly falcate ( Figs 9, 11 View FIGURES 9 – 11 , 12, 18 View FIGURES 12 – 20 ). Apical gonocoxal lobe digitiform ( Figs 9, 11 View FIGURES 9 – 11 , 12, 18 View FIGURES 12 – 20 ).... 2

2 Gonostylus less than 1.5X longer than greatest width in lateral view, with ventral margin slightly convex ( Figs 9 View FIGURES 9 – 11 , 12 View FIGURES 12 – 20 ). Basal gonocoxal lobe oval-round, directed dorsally............................................. appalachiensis View in CoL sp. nov.

- Gonostylus 2X longer than greatest width in lateral view, with ventral margin straight or slightly concave ( Figs 11 View FIGURES 9 – 11 , 18 View FIGURES 12 – 20 ). Basal gonocoxal lobe subovoid, directed posterodorsally, its distal margin indented slightly........................ inextricata View in CoL