Description of four new species of Zygomyia Winnertz from Ethiopia and Uganda (Diptera: Mycetophilidae)
Author
Kurina, Olavi
text
African Invertebrates
2012
2012-06-30
53
1
205
205
http://www.bioone.org/doi/abs/10.5733/afin.053.0113
journal article
10.5733/afin.053.0113
2305-2562
7917108
Zygomyia toro
sp. n.
Figs 5
,
15–18
,
23
,
27
Etymology:
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one of the traditional Kingdoms of
Uganda
, in which the
type
material was collected. Differential diagnosis: Distinguished from all other known Afrotropical
Zygomyia
species
by the unique male terminalia (
Figs 15–18
). Most similar to
Z
.
yllae
sp. n.
, sharing a similar outline of the male terminalia: gonocoxite with a narrow and sharp medial indentation ventroapically; ventral part of gonostylus bearing an internal macroseta and a twisted internal process; and dorsal part of gonostylus apically protruding. It differs in its smaller size, lighter colouration and details of the male terminalia: gonostylus with geniculate, irregularly tapering blunt macroseta ventrobasally (geniculate and evenly tapering in
Z
.
yllae
sp. n.
) and in the tapering dorsoapical protruding process (apically widening in
Z
.
yllae
sp. n.
).
Description:
Male
.
Head
: Brown with numerous dark setae.Two ocelli close to eye margins. Clypeus brown, lighter than head. Mouthparts yellow. Palpus with all segments yellow, two apical segments slightly paler, ratios of three apical segments 1.0:1.3–1.4:2.9–3.2. Scape brow-
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including 2 dorsoapical bristles, extending to middle of pedicel. Pedicel with apical
FURZQ RI VHWDH DQG D GRUVRDSLFDO EULVWOH H[WHQGLQJ EH\RQG DSH[RI ¿UVW ÀDJHOORPHUH.
Flagellomeres with short whitish setae.
Thorax
: Mesonotum dark brown, shoulders somewhat lighter. Pleural parts light brown. All bristles and setae on thorax dark brown. Scutellum with 4 strong marginal bristles and several weaker bristles along margin. Antepronotum with setae, including 6–8 bristles, of different lengths. Proepisternum with setae including 3 strong bristles. Anepisternum with 5–7 bristles of different lengths on dorsal part and with posteriorly-directed short setae. Anepimeron with 4 bristles on dorsal part and 2 or 3 short setae. Laterotergite with dorsally-directed setae. Metepisternum with setae on posterior part. Haltere pale yellow.
Legs
:
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narrowly along dorsal margin. Tibiae yellow. Tarsi appear brownish due to dark setae.:
KROH DQWHULRU VLGH RI IRUH FR[D, DSLFDO ¿IWK RI DQWHULRU VLGH RI PLG FR[D DQG DOO IHPRUD
clothed in dark setae. Hind coxa with dense light setae on posterior side. Mid femur with 1–3 apicoventral bristles, hind femur with 3–5 apicoventral bristles progressively shorter towards apex. Mid tibia with 3–4a, 6d (progressively longer towards apex), 4–5p (progressively longer towards apex) and 2v. Hind tibia with 7a and 6d. Proportions of femur to tibia for fore, mid and hind legs: 1.11–1.27, 1.19 [1.27]; 0.97–1.03, 1.01 [1.03]; 0.78–0.85, 0.81 [0.85]. Proportions of tibia to basitarsus for fore, mid and hind legs: 1.05–1.23, 1.14 [1.05]; 1.40–1.42, 1.41 [1.41]; 1.67–1.71, 1.69 [1.71].
Figs 15–18.
Zygomyia toro
sp. n.
, male terminalia: (15) ventral view; (16) dorsal view; (17) lateral view; (18) internal view of gonostylus. Scale bars = 0.1 mm.
Wing
: Wing length 2.35–2.77, 2.53 [2.46] mm. Membrane with yellowish tinge, veins dark yellow to brownish. A vague brown macula above
Rs
and
rm
; very faint preapical macula from tip of
R 1
towards
M 1
, but not including tip of
R 5
.
R 1
and
R 5
with strong setae, crossvein
rm
and
bM–Cu
with weaker setae on both sides.
M 1
with 9–13 and
M 2
with 3–10 apical setae.
CuA
glabrous. Crossvein
rm
0.7× as long as
m
-stem.
Abdomen
:
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Ventroapical margin of gonocoxite with abrupt medial indentation of
ca
ѿ JRQRFR[LWH
height. Gonostylus undivided into appendages. Ventroapical margin of gonostylus with
URZ RI ¿QH VHWDH.$ VKRUW YHQWUREDVDO PHGLDOO\-GLUHFWHG SURFHVV EHDULQJ ƻ DSLFDO DQG Í
basal setae.A geniculate, irregularly tapering blunt macroseta situated above the process and a twisted membranous short lobe posterior to macroseta. The latter exposed only in lateral or posterior view. Dorsal part of gonostylus with protruding apical process somewhat bent mesad and a sub-basal short internal hump-like lobe bearing apical setae. Aedeagus with two pointed apical outgrowths slightly bent mesad; parameres broad, curved with angular apices.
Female
. Unknown.
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,
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& co,
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(
No
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,
O. Kurina
& co,
Malaise trap
(
No
1).
Biology: Unknown.