ASEF 3-2008.indb - Laboratoire de Zoologie

Ann. soc. entomol. Fr. (n.s.), 2008, 44 (3) : 308-310
BRÈVE NOTE - SHORT ARTICLE NOTE
Brève note – Short note
Two new species of the genus Helina from Sichuan Province,
China (Diptera: Muscidae)
Wan-Qi Xue (1) , Yan Feng (2) & Yan-Feng Tong (1)
(1)
Institute of Entomology, Shenyang Normal University, Shenyang 110034, China
(2)
Hygienic and Anti-epidemic Station of Ya’an City of Sichuan, Ya’an 625000, China
Abstract. Two new species of the genus Helina Robineau-Desvoidy, collected from the western
mountainous region of Sichuan Province are described, namely H. postifl exa n. sp. and
H. subdibrachiata n. sp.
Résumé. Deux nouvelles espèces du genre Helina de la province du Sichuan, China (Diptera :
Muscidae). Deux nouvelles espèces du genre Helina Robineau-Desvoidy, collectées de la
région occidentale montagneuse de la province du Sichuan sont décrites : H. postifl exa n. sp. et
H. subdigrachiata n. sp.
Keywords: Diptera, Muscidae, Helina, New species, China.
Helina Robineau-Desvoidy 1830, one of the
largest genera of Muscidae, is well represented in all
zoogeographic regions. Pont (1986) reported 89 species
in Palaearctic region; the same author (1977) listed 30
species in Oriental region. Shinonaga (2003) recorded
17 species in Japan; Xue & Chao (1996) reported 90
species in China. In recent years, 84 species have been
reported in China. Up to now, there are 174 valid
species in China.
In the paper, we reported two new species of Helina,
which are described as following.
Material and methods
Absolute measurements are used for body length in millimeters
(mm). Abbreviations are used for characters include: acrostichal
setae is acr, presutural acrostichal setae is pre-acr, postsutural
acrostichal setae is post-acr, dorsocentral setae is dc, postsutural
dorsocentral setae is post-dc, prealar setae is pra, anteroventral
setae is av, anterior setae is a, anterodorsal setae is ad,
posterodorsal setae is pd, posterior setae is p, posteroventral
setae is pv.
Helina Robineau-Desvoidy
Helina Robineau-Desvoidy 1830. Essai Myod.: 493.
Type species. Helina euphemioidea Robineau-Desvoidy1830 = Anthomyia
pertusa Meigen 1826.
Diagnosis: Male frons usually narrow, proclinate orbitae setae
mostly absent, proboscis short. Four dark vittae on scutum,
mostly pre-acr absent, post-dc 3 to 4, pra present, the median
convate of proepisternum and anepimeron without hairs. Veins
E-mail: xwqfly@sina.com
Accepté le 29 mai 2008
Sc usually curved in bow-shaped, the dorsal surface of radial
node bare, lower calypter protruding in linguiform, apical part
of mid femur with a, hind tibia without pd, ad in apical part
of which longer than its diameter. Abdomen usually with a pair
of spots on 3rd and 4th tergites respectively; female oviscapt
slender, which tergites and sternites sclerotized weakly.
Descriptions of new taxa
1. Helina postiflexa n. sp. (Figs. 1–3)
♂. Body length 8.0 mm. Head: eyes with sparse long hairs; frons
twice as wide as anterior ocellus, frontal vitta equal to frontoorbital
plate in width, eight pairs of frontal setae on lower
3/5 of frons, fronto-orbital plates, parafacials greyish-yellow
pruinose, parafacial about 1.5 times as wide as postpedicel;
antennae black, postpedicel about 3 times as long as broad,
arista short plumose, the longest hairs about 1/2 the width of
antennal postpedicel, genal height about 3/10 of eye height,
anterior genal margin with a row of upcurved setae, genal and
postgenal hairs black; proboscis short, prementum twice as
long as height, palpi black, longer than prementum. Thorax:
ground-colour black, scutum with greyish-yellow pollen and
indistinct black vittae, the inner one reaching scutoscutellar
suture, acr 0+1, dc 2+4, pra equal to second notopleural seta in
length, notopleuron, margin and ventral surface of scutellum all
bare, basisternum, meron and katepimeron bare, katepisternal
setae 2+2. Wings: base and anterior margin brownish, slightly
hyaline, basicosta brown, costal spine as long as crossvein r-m,
radial node bare , veins R 4+5
and M straight, crossvein r-m
clouded, calypters yellowish, halteres yellow. Legs: hind tibia
reddish at middle part, otherwise black, fore tibia without
median p; mid femur with slender and short av in apical
1/3, with complete pv row, those in basal half strong, with 2
preapical a and 3 pd, mid tibia with 2 p; hind femur with full av
row, without pv, hind tibia with two rows of long setulae on av
surface, with complete ad row, slender, long, hair-like, in which
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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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W.-Q. Xue, Y. Feng & Y.-F. Tong
168b (168a) Frons about 1.5 times width of anterior
ocellus, the longest aristal hairs about 1.5 times as long
as the width of postpedicel, and cerci deeply furcated
laterally ...................................... H. subdibrachiata n. sp.
It also resembles H. dibrachiata Fang, Li &
Deng, but the pra is about 1/3 the length of second
notopleural setae; hind tibia with a row of setulae on
posterior surface; male cerci deeply furcated laterally,
the point of the fork almost reaching to basal 1/3 of
cerci, surstyli moderately short.
Acknowledgements. The authors are very grateful to Dr.
Adrian C. Pont (University Museum of Natural History,
Oxford, U.K.) who read this paper and give much helpful
advice; and the National Natural Science Foundation of
China (Project No.30870330) and the Experimental central
director’s Foundation of Shenyang Normal University (Project
No.SY200609) for funding this project.
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