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UNITED STATES NATIONAL MUSEUM BULLETIN 224 



ments present. Antenna elongate and slender; the 

 first segment is a little longer than the second and bears 

 a long, fine, bristly hair below in the middle, a shorter 

 bristly hair beyond it and 2 or 3 short, subappressed 

 hairs dorsally ; second segment with 1 or 2 bristly hairs 

 dorsally and a like number below and all of them situ- 

 ated close to the apex. Third segment slightly tapered 

 near the apex, which is bluntly pointed. This segment 

 is a little more than twice as long as the first two seg- 

 ments; dorsally it bears a distinct, but shallow excava- 

 tion near the middle from which is emitted a distinct 

 but minute, sharp spine directed distad. 



Head, anterior aspect : The face is extremely narrow 

 and below the antenna is about a twelfth the head 

 width, widening below. Face cover consists of micro- 

 pubescence and there are 6 or 7 moderately long, fine 

 hairs projecting outward and below from the small 

 protuberance on the lower face and also an upper and 

 lower pair of quite long, slender bristles followed by 

 an additional pair of shorter hairs laterally and below. 

 The front expands at a rate equal to the face, so that 

 at the vertex the width approximates the width at 

 the epistoma. Ocellar tubercle with sides abrupt and 

 a pair of rather long, stiff, divergent bristles. Vertex 

 deeply excavated and divergent. 



Thorax: The mesonotum is rather strongly convex 

 with abundant, short, subappressed pile over the entire 

 anterior part. Humerus pilose, the notopleuron bears 

 1 rather stout bristle ; also 1 supraalar and 1 postalar 

 bristle; the scutellum is convex with a few fine, scat- 

 tered hairs on the disc and with a pair of rather short, 

 quite weak, marginal bristles set close together. The 

 metanotum is high and abundantly long pilose later- 

 ally. Prosternum and propleuron united. A pair of 

 slender bristles is present posterodorsally on the meso- 

 pleuron. Hypopleuron with patch of long pubescence 

 and 1 or 2 fine, long hairs. Metapleuron with an espe- 

 cially well developed vertical row of 6 or 7 quite long, 

 fanlike, bristly hairs bent apically. The metasternum 

 behind the hind coxa is elongate, slopes backward, and 

 is completely chitinized. 



Legs: The hind femur is elongate and distinctly 

 thickened distally with a very fine, dorsal bristle at the 

 outer fourth and 2 at the apex, and with an extremely 

 long bristle ventrolaterally just beyond the middle, fol- 

 lowed by a shorter bristle before and after. Ventral 

 margin with 2 still longer, more slender, bristly hairs 

 near the middle and with some 2 or 3 such hairs, on the 

 basal half, which are not so long but quite ventral in 

 position. In addition there is a dense, ventral medial 

 fringe of moderately long, fine, erect hairs. Hind tibia 

 slightly thickened distally. It is characterized by 4 

 long, stiff, regularly spaced, laterally placed, reddish 

 brown, microtuberculate bristles; 4 equally long, stout, 

 curved, ventral bristles, also regularly spaced; and 4 

 or 5 much shorter, finer, dorsomedial bristles. In addi- 

 tion there is a dense fringe of fine, erect, ventral pile 

 nearly as long as that upon the femur. Tarsal seg- 

 ments characterized by extremely long, dorsoapical 



bristles. Middle femur with a long, prominent bristle 

 anteriorly at the outer third; the middle tibia, as in the 

 hind tibia, is characterized by 4 long, stout, anterior 

 bristles, together with 1 shorter, basal bristle, followed 

 by 5 long, anteroventral bristles. Tarsal segments also 

 characterized by extremely long bristles; 2 are on the 

 basitarsus near the base, and near the apex, there is 1 

 anterior and 1 posterior bristle, together with a dorso- 

 apical pair. On the second segment the basal bristles 

 are not present but the 4 similar apical bristles are 

 present. Anterior femur with 3 slender, ventral bristles 

 on the outer half ; its tibia has 3 long, ventral bristles, 

 3 dorsal and 3 to 5 posterior bristles, with some addi- 

 tional fine, shorter, scattered hairs. Apex of anterior 

 tibia simple. 



Wings : The wings are slender. Marginal cell closed 

 with a long stalk. Fourth posterior cell closed ; the end 

 of the discal cell lies adjacent to the end of the fourth 

 posterior cell or very near it, so that the veins closing 

 these cells form almost a straight line. Alula reduced 

 and not wider than the basal section of the costal cell. 

 Ambient vein runs to the alula. 



Abdomen: The abdomen is slender, subcylindroid 

 and rather convex ; it is bare, with very fine punctures. 

 The pile is extremely short and scanty but the sides of 

 the first segment have a vertical fan of 10 or 12 regular 

 hairs which are long and fine. Sides of second tergite 

 in the middle with a single, long, stiff bristle ; bristles 

 absent from the remaining tergites. Male terminalia 

 small, inconspicuous but visible in lateral profile as a 

 basal and distal process. Description drawn from type. 



Distribution : Oriental : Anoplothyrea javaiia de 

 Meijere (1911). 



Genus Cerotainia Schiner 



Figures 216, 657, 1348, 1357, 2167 



Cerotainia Schiner, Verh. zool.-bot. Ges. Wien, vol. 16, p. 673, 

 1866. Type of genus: Laphria xanthoptera Wiedemann, 

 1828, by original designation. 



Ceratotaenia Lynch Arribalzaga, Ann. Soc. Cient. Argentina, 

 vol. 9, p. 52, 1SS0, lapsus. 



Flies of small size and dark color, robust, with punc- 

 tate abdomen sometimes slightly clavate. They are 

 readily recognized by the strongly divergent and pos- 

 teriorly flared and excavated vertex, together with the 

 exceptionally long, slender antenna. The third seg- 

 ment has a dorsal incision with spine lying beyond the 

 middle. It is distinguished from Atomosia Macquart 

 by the above characters and from Eumecosoma Schiner 

 by the length of the first antennal segment, which is at 

 least three times as long as the second segment. From 

 Cyphotomyia Williston it is separated by long pile, less 

 exaggerated punctation, occipital bristles which are 

 fine or wanting. Cyphotomyia is perhaps of no more 

 than subgeneric value. A few species of Cerotainia are 

 exceptionally robust and wide, with swollen femora and 





