94 I. AHMAD 



$. Body length, 11-5-12-0 mm., width, 1-7-1 9 mm. Head, length, 1-7 mm., width, 1-2 mm. 

 Antennae, segment I, 3-5-3-7 mm., II, 2-0-2-2 mm., Ill, 2-6—2-8 mm., IV, missing. Rostrum, 

 segment I, i-o mm., II, i-o mm., Ill, o-6 mm., IV, o-6 mm. Pronotum, length, 1-7-2-0 mm., 

 width, 1-7-1-9 mm. Hind femora, 6-o mm. Hind tibia, 6-o mm. Distance between ocelli, 

 0-3-0-4 mm., distance between an ocellus and an eye, 0-5-0-7 mm. 



Slightly robust, posterior margin of seventh abdominal sternum deeply emarginate medially, 

 slightly convex (Text-fig. 313). 



$ genitalia : First gonocoxae elongated, curved in middle (Text-fig. 250) ; seven pairs 

 of intervalvular sacs (Text-fig. 312) ; spermatheca long and cylindrical, thinner in middle with 

 a long coiled tube (Text-fig. 236). 



Holotype <$, Philippine Islands : Luzon, Manginin, 17.1X (G. Bottcher), B.M. 

 (N.H.). 



Paratypes. Philippine Islands : 3 <$, 2 $, same data as holotype, B.M.(N.H.), 

 Mindanao, Sulu, near base of Mt. Dahao Jolo 1, 150 m. ( 11 ^, 12 $, 2.1X.1958 

 (Milliron), Bern. Bishop Mus. ; Vietnam: Tonkin, Choganh, Hoa-Binh, 5^, 1 $, 1919 

 (/. De Cooman, L. Duporte, R. Oberthur) Mus. Hist, nat Paris ; Sarawak : Kuch- 

 ing, Santubong, 797-1,500 m., 41 $, 45 $, 18-30. vi. 1958 (T. C. Maa), Bern. P. 

 Bishop Mus., K. S. Road, 19J miles, Tarat Station, 10th mile Bau Rd., 18th mile 

 K. S. Rd. on grasses near wet paddy, 105 <$, 95 $, 13. hi. 1963 (S. K. Hueh, R. Lav), 

 Dept. Agric., Sarawak. 



This species is found in Vietnam in the west, Philippine Islands in the east and 

 Borneo in the south. The adults have been collected in March, June and September 

 but is seems to be most abundant in March and September. This species has also 

 been reported feeding on grasses near paddy fields, but probably does not commonly 

 feed on paddy or this would have been recorded. 



This species is close to L. lepida Breddin and L. pseudolepida sp. n., its allopatric 

 allies, in having small size of the body (less than 12 mm.) but can easily be separated 

 from them by the shape of the paraclypeae, which are straight, thicker in the middle 

 and rounded at the apices. The conjunctival appendages of the aedeagus, the first 

 pair of gonocoxae in $ and the shape of the spermatheca confirm its identity. 



Leptocorisa oratorius (Fabricius) 

 (Text-figs. 197, 211, 225, 239, 253 and 315-320) 



Gerris oratorius Fabricius, 1794 : 191, 1803 : 261 

 Leptocorisa bengalensis Westwood, 1842 : 18 

 Rhabdocoris arcuata Kolenati, 1845 : 67 

 Myodochus trinotata Herrich Schaffer, 1848 : 95 

 Leptocorisa maculiventris Dallas, 1852 : 484 



Leptocorisa (Rkabdiocoris) acuta (Thunberg) ; Distant, 1902 : 410, China, 1924 : 237 [Mis- 

 identifications] 



Characterized by the robust body, series of brownish black dots on the ventro- 

 lateral side of abdomen and by the form of $ and $ genitalia. 



o*. Body length, 18-0-18-5 mm., width, 2-9-3-0 mm. Head length, 2-4-2-6 mm., width, 

 1-8-2-0 mm. Antennae, segment I, 5-0-5-2 mm., II, 3-4-3-5 mm., Ill, 3-9-4-0 mm., IV, 

 5-6-6-0 mm. Rostrum, segment I, 1-9 mm., II, 1-9 mm., Ill, i-o mm., IV, 0-9 mm. Pronotum, 



