72 H. C. EFFLATOUN. 



TYPE : Schistopterum morhii/si Becker (1903). 



This is the only species oi lliis curious and interesting genus 

 knowu iip to the présent, which, owing to the above mentioned cha- 

 racters stands well apart from any other known genus in this 

 family. It breeds in the capitulum of Pluchea dioî'coridh from whicli 

 plant I hâve bred the adiilts. 



SCHISTOPTERUM MOEBIUSI, Becker 

 (PI. III fig. 5 and pi. I figs. 2 and 10) 



Beck., Mitteil. Zool. Mus. Berlin, II, 137 (1903) 



DIAGNOSIS: — A small black species with very beautiful 

 and charaeteristic wings, possessing a cleft above the minute stigma , 

 and with the veins greatly curved and some very short. 



Maie and Female. Length of body : 1.7—2 mm., ovipositor : 

 0.5 mm., wing : 1.7—1.9 mm. 



DESCRIPTION:— Head whoUy shining dark yellow; frons 

 prominent, dark yellow to yellowish-brown ; face dark yellowish- 

 brown, very short, concave with a carina; cheeks less shining, yel- 

 low, normal; epistoma verv broad, prominent, dark yellow, except 

 for an elongated triangular dark spot on each side; proboscis very 

 short and not geniculate, palpi rather long, prominent, broad and 

 verv flat. with more than their basai halves yellow and their apical 

 third black- thev are covered with a very minute and délicate 

 pubescence; occiput flat, blackish; vertex broad, flat and dull yellmv 

 with the small shining black vertical triangle very conspicuous; an- 

 tennae inserted immediately below the middle of the eyes, the third 

 joint at least three times as long as broad, gradually tapering to the 

 apex, with its apical half , as well as the dorsal edge of its basai half , 

 black and the remaining })art yellow; arista a little longer than the 

 third joint, thin. pale yellow. Ail the bristles are dark vellowish- 

 brown except the short outer rt and the prt. which are white. 



Thorax globose, -^specially on the side margins, dull black owing 

 to a very fine greyish pulverulence, and possessing short, white. 

 rather adpressed hairs, which are thinlv scattered over the thorax, 

 and scarcer on the pleurae and si utelhnn. Tho bristles are long and 

 brownish-yellow. 



Abdomen entirelv blaik with tlic four basai segments also (hill 

 owing to the same fine greyish pidverulence, but the apical half 

 (fifth segment and ovipositor) shining; maie hypopygium médium 

 in size and bearing some minute hairs. The ovipositor is almost as 

 long as half the length of the abdomen and possesses some very deli- 



