A N N A L E S HISTORICO-NATURALES MUSEI N A T I O N A L I S H U N G A R I C I Tomus 70. Budapest 1978.

Stenelmis Dufour species of Korea (Coleoptera, Elminthidae)*

by M . S A T Ô , N a g o y a

Abstract — Description o f Stenelmis koreanus sp. n . is given completed wi th the specific differences f rom its nearest ally. W i t h 3 figures.

The widespread genus Stenelmis D U F . is represented by more than 100 species, of which about 6 0 species are known from Asia, excluding Korea from where heretofore no species o f the genus had been recorded.

Fortunately, I had an opportunity through the courtesy o f D R . Z . K A S Z A B to examine a consi­derable number of specimens belonging to the genus Stenelmis captured at Korea. The specimens consist of two species, and one o f which is S. vulgaris N O M U R A , while the other is seems to be a new species. I n addition to the above material, some other specimens o f Korean Stenelmis preserved in the collection o f the California Academy of Science, were also examined through the kindness o f M r . H . B. L E E C H . They proved to belong to S. vulgaris.

I n the present paper, I give the description o f a new species and some notes on S. vulgaris f rom Korea for the first time, based upon the collections mentoined above.

Before going further, I wish to express my cordial thanks to D R . Z O L T Á N K A S Z A B , Director-Ge­neral o f the Te rmésze t t udomány i M ú z e u m , Budapest and M r . H U G H B. L E E C H , Angwin of Califor­nia for their kindness to give me the privilege to study the Korean Stenelmis-species.

Stenelmis vulgaris N O M U R A (Fig. 1 )

Stenelmis vulgaris N O M U R A , 1 9 5 8 . Entom. Rev. Japan, 9 ( 2 ) : 4 4 , p i . 8 , fig, 3 (Wakamtsu, Fukushima Pref., Japan).

S p e c i m e n s e x a m i n e d : 5 9 9» Sarivon, Korea, July 2 2 , 1 9 5 6 , leg. M A G Y A R ( in co l l . Te rmésze t tudomány i M ú z e u m , Budapest). — 3 çf çf, Chiksam Minea, Korea, June 2 3 , 1 9 1 1 , leg. J. C. T H O M P S O N ( in . col l . California Academy of Science). — 1 9 , M t . Sudosan (alt. 7 0 0 m), Kyong-sangpuk-do, Korea, July 9 - 1 2 , 1 9 7 1 , leg. Y A M A G I S H I ( in coll . Nagoya Women's Univ . ) .

D i s t r i b u t i o n : Japan (Honshu, Shikoku, Kyushu), Korea. N o t e . This species is common throughout the main land of Japan, except Hokkaido. Its occur­

rence in Korea is recorded for the first time. I n Tsushima, intermediate area o f Kyushu and Korea, the species is unknown so far, but i t most likely also occurs there.

The male genitalia of the species is herein illustrated for the first time based upon the Korean specimen (Fig. 1 ) .

Stenelmis koreanus sp. n . (F igs . 2 - 3 )

B o d y elongate, somewhat slender, modera te ly convex. C o l o u r mos t ly da rk reddish b r o w n ; antennae, tars i , m o u t h parts ye l lowish b r o w n . — H e a d s l ight ly convex, sparsely and finely g ranu la te ; in tegument finely cor iaceous; l a b r u m sh in ing i n h i n d , microre t icu la te i n f r on t , its an te r io r m a r g i n pubescent; eyes large, p r o m i n e n t , the b read th o f each eye about 2 . 4 times as b road as distance between them. — P r o n o t u m modera te ly convex, abou t 1.1 times as l o n g as b r o a d ; sides bisinuate, broadest at basal t h i r d , ra ther const r ic ted

* Zoological Collectings by the Hungarian Natural History Museum in Korea, No. 38.

Ann. Hist.-nat. Mus. Nat. Hung., 70, 1978.

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148 M . SATÔ

at apical t h i r d ; f ron t angles p roduced a long the outside o f eyes, its apex m o r e o r less sharp;

h i n d angles acute; surface uneven, d i s t i nc t ly coriaceous, p r o v i d e d w i t h some g i b b o s i t y ;

m e d i o - l o n g i t u d i n a l groove b r o a d , d is t inc t , ex tending f r o m base to apica l two- f i f t h s ; subla-

tera l keels somewhat d is t inct , t raced at basal fifth. Scu te l lum suboval , very scarcely punctate .

— E l y t r a somewhat flat on disc, abou t 1.4 t imes as b r o a d as p r o n o t u m , a b o u t 1.9 times

as l o n g as b road , subparal lel-sided f r o m base to apical t h i r d , then d i s t inc t ly n a r r o w e d poste­

r i o r l y ; sides crenula te ; shoulder p r o n o u n c e d ; surface closely pubescent resembl ing fe l t ;

punctures i n striae s t rong, becoming finer pos te r io r ly , b u t su tu ra i ones f ron t ing a sulcus i n

pos te r io r p o r t i o n , interspaces between them one - th i rd to a h a l f as l o n g as the i r d iameter ;

in tervals o f striae a lmost flattened, t h o u g h t h i r d one elevated at base and s ix th one ra ther

car inate f r o m base to near apex. — V e n t r a l s u r f a c e shagreened, rugosely puncta te

or sha l lowly p i t t e d ; p ros te rna i process b r o a d , its apex feebly no tched . — L e g s s tou t ;

m i d t ib iae d i s t inc t ly d i la ted at ap ica l t h i r d o n inner side i n male and no t d i l a t ed i n female.

— M a l e geni ta l ia as figured ( F i g . 2).

L e n g t h : 3.0-3.5 m m ; b r e a d t h : 1.1-1.2 m m .

Holotype, çf: Korea, Pyongyan, Hotel garden, Prov. South Pyongan, Aug. 5. 1971, leg. H O R -V A T O V I C H et PAPP . — A l l o t y p e , $ , same data as for holotype. P a r a t y p e s : 39çfçf, 51 9 9 > same data as for holotype. — The type-series are deposited in the collection of Természet­t u d o m á n y i M ú z e u m , Budapest, except some paratypes which are preserved in the collection o f Na-goya Women's University.

T h e present new species is related to S. anytus H I N T Ó N f r o m C h i n a and S. kaszabi

D E L È V E f r o m V i e t n a m , bu t can be d is t inguished f r o m b o t h i n hav ing the male geni tal ia

Figs. 1-2. Male genitalia of 1 = Stenelmis vulgaris N O M U R A , 2 = Stenelmis koreanus sp. n . — Fig. 3. Pronotum of Stenelmis koreanus sp. n .

ra ther s tout i n m e d i a n lobe, the p r o n o t u m g ibbous ly p ronounced , the b o d y somewhat large

and the h i n d t ib iae n o t d i la ted anywhere .

Stenelmis nipponica N O M U R A

Stenelmis nipponica N O M U R A , 1958. Entom. Rev. Japan, 9 (2) : 41 , p i . 8, fig. 1 (Matsuyanra, Ehime Pref., Japan).

S p e c i m e n s e x a m i n e d : 7 exs., Korea, Prov. Gangvon, district On-dzong, Kum-gang san, near Hote l Go-song, (alt. 250 m) , A u g . 4-7, 1975, leg. P A P P et VOJNITS ( i n col l . Természe t ­t u d o m á n y i M ú z e u m , Budapest).

D i s t r i b u t i o n : Japan (Honshu, Shikoku, Kyushu) , Korea. N o t e : The present species is new to the fauna o f Korea.

References

B O L L O W , H . (1941): Monographie der palaearktischen Dryopidae mi t Berücks icht igung der eventuell transgredierenden Arten (Col.) , I I I . Subfamilie Helminae. — Mitt. Münchn. ent. Ges., 31 (1): 1-88, Taf. I .

H I N T O N , H . E. (1941): New genera and species of Elmidae (Coleoptera). — Trans. R. ent. Soc. London, 91 (3): 65-104.

D E L È V E , J : (1968): Dryopidae et Elminthidae (Coleoptera) du Vietnam. — Ann. Hist.-nat. Mus. Nat. Hung., 60: 149-181.

N O M U R A , S. (1958): Dre i neue Stenelmis-Arten aus Japan (Coleoptera, Elmidae). — Entom. Rev. Japan, 9 (2): 41-45, p l . 8.

Author's address: M A S A T A K A SATÔ

Biological Laboratory Nagoya Women's University Kuroishi , Shimada, Tenpaku-cho Tenpaku-ku, Nagoya 468 Japan