ASEF 3-2008.indb - Laboratoire de Zoologie

New species of the genus Helina
2-3 are strong, with a complete series of slender hairs on pv
surface, gradually becoming longer basad. Abdomen: groundcolour
black, cone-shaped, with dark grey pruinose, tergites 3
and 4 each with a pair of large ellipse-shaped brown marks;
sternite 1 bare.
♀. Unknown.
Holotype. male, China, Sichuan Province: Forest Farm of
Er’lang Hills (29°58‘N 102°20‘E), 2680 m, 20. VIII. 1984, Coll.
Y. Feng. Paratype. China, 1 male, same data as holotype. The
holotype is deposited in the Medical Entomological Collection,
Institute of Microbiology and Epidemiology, Beijing.
This new species will key to couplet 153 (154) in
Hennig (1957), but it differs distinctly from H. veterana
Zetterstedt and can be incorporated into Hennig’s key
as follows:
153 (154) ...................................... Hind tibia wholly straight
153a (153b) Eyes covered with dense long hairs; inner
margin of fronto-orbital plates, lunule and parafacials
with silvery white pruinose; scutum with four distinct
longitudinal vittae; abdomen with even greyish-yellow
pruinose ........................................H. veterana Zetterstedt
Figures 1–6
Helina postiflexa n. sp. (♂). 1, 5th sternite in ventral view; 2, cerci in
posterior view; 3, terminalia in lateral view. Helina subdibrachiata n. sp.
(♂). 4, 5th sternite in ventral view; 5, cerci in posterior view; 6, terminalia
in lateral view.
153b (153a) Eyes with sparse long hairs, fronto-orbital
plates and parafacials greyish-yellow pruinose, scutum
with indistinct black vittae, abdomen with dark grey
pruinose, the inner apical lobe of cerci moderately
broader and shorter, the outer one protruding only
slightly ................................................ H. postifl exa n. sp.
The new species also resembles H. subhirsutitibia
Wu, but it differs from the latter by having eyes with
sparse long hairs; mid femur with slender and short
av in apical 1/3; hind tibia with a complete ad row;
abdomen dark grey pruinose; male cerci becoming
narrow in distal half in profile (becoming broad in H.
subhirsutitibia), inner lobes of cerci moderately closer
to each other in posterior view (slightly separated in H.
subhirsutitibia).
2. Helina subdibrachiata n. sp. (Figs. 4–6)
♂. Body length 5.0 mm. Head: eyes bare; frons about 1.5 times
as wide as anterior ocellus, frontal vitta slightly broader than
1/2 the width of fronto-orbital plate, seven pairs of frontal
setae on lower half of frons, fronto-orbital plates and parafacials
silvery grey pruinose, parafacial as wide as antennal postpedicel;
antennae black, postpedicel about 3 times as long as broad,
arista long plumose, the longest hairs about 1.5 times the width
of antennal postpedicel; genal height about 1/5 of eyes height,
genal and postgenal hairs all black; proboscis short, prementum
1.5 times as long as height, palpi black, longer than prementum.
Thorax: ground-colour black, scutum with grey pruinose and
four black vittae, the inner two not reaching to scutoscutellar
suture, acr 0+1, dc 2+4, pra about 1/3 the length of second
notopleural seta, notopleuron, margin and ventral surface of
scutellum bare, basisternum, meron and katepimeron bare,
katepisternal setae 2+2. Wings translucent, tegula and basicosta
black-brown, costal spine slightly shorter than crossvein r-m,
radial node bare, veins R 4+5
and M straight, calypters yellowish,
halteres yellow. Legs: knees brownish-yellow, tibiae brown,
otherwise all black, fore tibia without median p; mid femur
with 3 pv in basal, mid tibia with 2 p; hind femur with a row
of long av, those in basal half sparse, without pv, hind tibia
with 3 av, 4 ad and 1 prebasal pd, with a series of posterior
setulae on middle. Abdomen: dark brown, cone-shaped, with
grey pruinose, tergites 3 and 4 each with a pair of black brown
marks and central pruinose vitta; sternite 1 bare.
♀. Unknown.
Holotype. male, China, Sichuan Province, Maowen,
Cibusuyabazai (30°06′ N, 103°09′ E), 2300 m, 22. VIII. 1983.
X. R. Qiao. Paratype, China, 1 male, same data as holotype. The
holotype is deposited in the Medical Entomological Collection,
Institute of Microbiology and Epidemiology, Beijing.
In Hennig (1957), H. subdibrachiata n. sp. will
key through the genus Helina (♂♂) to couplet 168
(169). H. subdibrachiata n. sp. can be incorporated
into Hennig’s (1957) male key as follows:
168 (169) Hind femur without pv setae, sternites without
long hairs
168a (168b) Frons about 3 times width of
anterior ocellus, the longest aristal hairs
about as long as the width of postpedicel, and
cerci without lateral lobe ......................H. reversio (Harris)
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