a S T U D Y OF PHLEBOTOMINE SANDFLIES (DLPTERA : PSYCHODIDAE) I N Y U N N A N PROVINCE, C H I N A .
SERGENTOMYIA (SERGENTOMYIA) WANGI N . S P .
LENG Y.J.* & ZHANG S.L.**
Summary:
Among the phlebotomine sandflies collected in a lime-stone cave of 21°42'N, 10°23'E and 700 m above sea level on 14th August, Mengyuan, Mengla County, Xishuangbanna District, Yunnan Province, two males of the group fallax of subgenus Sergentomyia are quite different in morphology with those hitherto recorded in the literature. In the present paper its morphology is described with seven figures and the name Sergentomyia wangi is proposed in honor of professor Chao-Tsun Wang for his
contribution in study and control of leishmaniasis in China.
KEY WORDS : taxonomy, Diptera, Psychodidae, Sergentomyia wangi n. sp., China.
Résumé : ETUDE SUR LES PHLÉBOTOMES (DIPTERA: PSYCHODIDAE) DE LA PROVINCE DE YUNNAN EN CHINE. SERGENTOMYIA (SERGENTOMYIA) WANGI N. SP.
Parmi les phlébotomes récoltés dans une grotte calcaire (2 I °42'N, 10°23'E) à 700 m au-dessus du niveau de la mer le
14 août (Conté Mengyuan, Mengla, District de Xishuangbanna, Province du Yunnanj, deux mâles du sous-genre Sergentomyia (groupe fallax) se sont avérés différents de ceux connus jusqu'ici dans la littérature. Le présent article décrit la morphologie de Sergentomyia wangi. Le nom est proposé en l'honneur du
Professeur Chao-Tsun Wang pour sa contribution dans l'étude et le contrôle des leishmanioses en Chine.
MOTS CLES :
taxonomie, Diptera, Psychodidae, Sergentomyia wangi n. sp., Chine.SERGENTOMYIA (SERGENTOMYIA) WANGI N. SP.
H
olotype: natural lime-stone c a v e o f 2 1 ° 4 2 ' N , 101° 2 3 ' E a n d 7 0 0 m a b o v e t h e s e a level, at M e n g y u a n , M e n g l a C o u n t y X i s h u a n g b a n n a District, Y u n n a n Province. Preserved in the Department o f Medical Parasitology, Faculty o f M e d i c i n e , J i n a n University, G u a n g z h o u 5 1 0 6 3 2 China. Collector: Dr.HE, Ming S h e n g .
Paratype: s a m e as t h e h o l o t y p e .
Unit for m e a s u r e m e n t : m i c r o m e t e r = µm.
S p e c i m e n measured: t w o m a l e s .
MALE
Wing (Fig. 1): narrow, 1575 (1550-1599) long, 455 (426- 484) wide, L/W = 3.43 (3.22-3.64); a = 176 (172-180),
β = 402 (394-410), y = 271 (238-303), 5 = 70 (49-90), π =78 (66-90), index ( a / p ) = 0.45 (0.42-0.47), a/ β + y
< = 0.26 (0.24-0.28), a and P are long which makes the index and a / β + y < 0.5.
* Department of Medical Parasitology, Faculty of Medicine, Jinan Uni
versity Guangzhou, 510632 China.
** Department of Biology, Faculty of Life-Sciences, Shandong Uni
versity, Jinan 250100 China.
Correspondence: Leng Yan Jia.
Tel.: +86-20-85220255 or 85220270 - Fax: +86-20-85221343.
E-mail: 85220255@l63.net
Antenna (Fig. 2 ) : A 3 long 2 0 8 ( 2 0 5 - 2 1 0 ) , A4 long 117 ( 1 1 6 - 1 1 7 ) , c / b = 0 . 2 9 ( 0 . 2 6 - 0 . 3 1 ) , A4 = A5. Ascoid for
mula = 1 / 3 - 1 5 ( A 1 4 - 1 6 lost).
L a b i u m (Fig. 3 ) : length 2 0 3 ( 2 0 1 - 2 0 5 ) , A 3 / L = 1.02 ( 1 . 0 0 - 1 . 0 4 ) , Labral sensilla (Lewis, 1 9 7 8 ) : apical 6, sub- apical 4, adoral 9, cibarial 4 .
Palp (Fig. 4 ) : length 5 2 5 , P I = 4 1 , formula = 1,2,(4,3),5, relative length = 1 0 0 : 2 8 9 : 3 1 0 : 2 9 8 : 4 2 2 , s e g m e n t 3 => Seg
ment 4 (100:104). Spatulate sensilla about 6-8 over 0 . 3 0 - 0 . 4 4 at s e g m e n t 3 from the b a s e .
Cibarium (Fig. 5 ) : arch incomplete. A medium size pig
ment patch in special m o r p h o l o g y , with a breadth o f 2 6 - 2 7 , about 0 . 5 6 ( 0 . 5 5 - 0 . 5 7 ) the inner-diameter o f cibarium ( 4 7 ) . Cibarial armature: hind teeth with t w o rows o f medium-sized triangular teeth o f w h i c h 2 1 in front r o w a n d 12 in b a c k row; t h e teeth in b a c k r o w is l o n g e r than that o f front row a n d the central o n e s are w i d e r a n d longer than t h e lateral o n e s . 4 - 5 small point teeth formed the fore teeth, w h i c h is occasionally a p p e a r e d in the middle o f cibarium.
Pharynx (Fig. 6): 129 ( 1 2 7 - 1 3 1 ) long, 27 ( 2 5 - 2 9 ) wide, L / B = 4 . 8 ( 4 . 5 - 5 . 1 ) . Armature o c c u p i e d posterior 1 / 4 o f pharynx a n d consists o f b r o a d scales with serration at posterior border.
Male genitalia (Fig. 7 ) : Coxite 2 4 0 ( 2 3 6 - 2 4 4 ) long. Style 108 ( 1 0 3 - 1 1 3 ) long, bearing four spines, t w o terminal, t w o subterminal, a c c e s s o r y spine at about 0 . 6 8 - 0 . 7 0 from b a s e , coxite/style = 2.23 ( 2 . 0 9 - 2 . 3 7 ) , > 2. Paramere 191 long, h o o k e d , c o x i t e / p a r a m e r e = 1.24. Aedeagus
Parasite, 1999, 6, 343-345
Mémoire 343
Article available athttp://www.parasite-journal.orgorhttp://dx.doi.org/10.1051/parasite/1999064343
344 Parasite, 1999, б, 343-345 Figs 1-7. - Sergentomyia wangi n. sp. 1. Male wing; 2. Antenna; 3. Labrum (labral sensilla): Ap = apical, Sap = subapical, Ado = adoral, Cib = cibarial; 4. Palp: S. Spatulate sensilla; 5. Cibarium: Cp = cibarial patch; 6. Pharynx; 7. Male genitalia.
Mémoire
107 ( 1 0 5 - 1 0 9 ) long, bilaterally smooth, paramere/aedea- gus = 1.81. Genital filament 3 8 5 ( 3 5 7 - 4 1 2 ) long, genital p u m p 8 1 ( 6 5 - 9 6 ) long, filament/pump = 4 . 7 5 ( 3 . 7 2 - 6 . 3 4 ) . Surstyle 1 9 3 ( 1 8 5 - 2 0 1 ) , s h o r t e r t h a n c o x i t e , coxite/surstyle = 1.25 ( 1 . 1 7 - 1 . 3 2 ) .
T a x o n o m i c a c c o r d a n c e : Sergentomyia wangi b e l o n g s to t h e s u b g e n u s Sergentomyia Franca & Parrot ( 1 9 2 0 ) as with hairs o n a b d o m i n a l tergites 2-6 recumbent, cibarial pigment patch present, cibarial armature with parallel fore a n d hind rows o f teeth . A3 < A4 + A5, wing index (oc/p) < 0 . 5 , a e d e a g u s stout, style with four spines: two terminal a n d t w o subterminal. T h e fol- lowing characteristics define S. wangi to group fallax ( T h e o d o r , 1 9 5 8 ) : with narrow wings, A3 < A4 + A 5 , A3/L = 1. And the m o r p h o l o g y o f cibarium described for S. wangi is characteristic to other m e m b e r s in group fallax hitherto r e c o r d e d in t h e literature.
There were two species of fallax flies recorded in China, namely: S. sinkiangensis (Ding & Ho,1962) Leng, Lane
& Lewis, 1987 (Xinjiang, Inner Mongolia) a n d S. sintoni Pringle, 1953 (Xinjiang, Synonym: S. arpaklensis Perfiliew, 1933). T h e s e two phlebotomines distributed in the desert area o f Northwest China and S. wangi is a phlebotomine of the rainy forest in Southwest China.
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