Minjerribah (Diptera: Dolichopodidae), a new genus from coastal Queensland, Australia
Author
Bickel, Daniel J.
text
Zootaxa
2019
2019-10-17
4686
4
593
599
journal article
25208
10.11646/zootaxa.4686.4.8
5934371f-867e-4f01-a97d-fb10afe72b45
1175-5326
3496551
33BD198E-EEBB-48F0-B8EC-C47E2B0EE086
Minjerribah
Bickel
,
gen. nov.
Type
species.
Minjerribah litoura
Bickel
sp. nov.
, here designated.
Etymology.
Minjerribah
is the name for North Stradbroke Island given by its traditional custodians, the Quandamooka people. The gender is feminine.
Diagnosis.
Genus
Minjerribah
(this generic diagnosis is based on a single species and emphasizes characters considered to be of generic importance).
Body length
about 4.0 mm; wing: 3.8 x
1.6 mm
.
Head.
Slightly wider than high in anterior view; pair distinct converging postvertical setae on dorsal postcranium, not in line with postocular setae; pairs of vertical and diverging ocellar setae present; lower face and clypeus wide, and clypeus distinctly tectiform in both sexes; scape bare; pedicel with conus protruding into socket-like postpedicel, evident in both median and lateral views of both sexes; postpedicel lobate and rounded, with dorsal arista comprised of short basal article and long distal article.
Thorax.
Acrostichal setae totally absent; 5 strong dc present, decreasing in size anteriorly; median scutellar setae strong, lateral scutellar seta about one-quarter length of median seta; proepisternum just dorsad of coxa I with strong curved seta.
Legs.
FI bare; TI with strong ad, dorsal and pv setae; FII with strong anterior and posterior preapical setae at 4/5; TII with strong ad, dorsal, and ventral setae; FIII with only strong anterior seta at 4/5 and with two short av setae distally; TIII with strong ad, dorsal and ventral setae and double posterior row of some 12–15 irregular setal pairs along length.
Wing.
Rather broad; membrane hyaline; R
2+3
ending in costa near 9/10; R
4+5
and M diverging from base, and bowed with respect to each other beyond dm-cu crossvein, but subparallel apically with R
4+5
joining costa anteriad of apex, and M joining posteriad of apex; vein M with flexion or
bosse alaire
halfway between join with dm-cu and apex.
Abdomen.
Tergites 1–5 wide and rounded, not dorsoventrally flattened; segments 6, 7, 8 and hypopygium mostly retracted under tergite 5 at rest and devoid of setae; tergite 6 bare, short and weak, almost entirely retracted under segment 5; segment 7 bare, reduced to narrow band with sternite 7 attached to ovate sternite 8; epandrium rounded, subrectangular; surstylus short, lobate and fused with epandrium (
Figs 1
,
4
); cercus short, lobate; female oviscapt with tergites 9+10 (
sensu
Capellari 2018
) divided into two acanthophorites, each bearing 4 pointed spines (
Fig. 3
).