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UNITED STATES NATIONAL MUSEUM BULLETIN 224 



along the anterior margin. Acrostical and dorsocen- 

 tral elements not differentiated anteriorly; the latter 

 are very short and fine and laterally divergent behind 

 the suture. Humerus with rather long, abundant, fine, 

 erect pile. The following complement of long and 

 exceptionally stout bristles present laterally: 1 noto- 

 pleural, 1 supraalar, 1 postalar, and 1 pair of still 

 stouter, scutellar bristles. Scutellum very slightly con- 

 vex, large, shining, wrinkled; disc apilose and dis- 

 tinctly impressed rim. The spinous bristles are set 

 rather close together, thick but sharp only at apex. 

 Propleuron below with a tuft of pile and on the 

 pronotum is a band of stiff pile only; longer, similar 

 pile on the lateral pronotum. Anterior sternopleuron 

 with a tuft of fine hairs; 1 or 2 fine hairs on the 

 upper sternopleuron ; upper corner of the mesopleuron 

 with 1 conspicuous, long, stout bristle and 1 more slen- 

 der bristle. Pteropleuron apilose but posthypopleuron 

 with 3 long, bristly hairs and a vertical row of shorter 

 pile; the metapleuron has a single row of 7 extremely 

 long, slender bristles, the upper ones black, all of them 

 curved downward on the outer portion. Lateral 

 metanotum with a patch of slender bristles and bristly 

 pile. The postmetacoxal region forms a large, long, 

 chitinized arch; beyond it lies the chitinized, isolated, 

 ventral metasternum with a few, long, scanty hairs and 

 also a pair of characteristic, long, basal, bristly hairs. 

 Legs: Anterior and middle femora comparatively 

 slender; the hind femur is distinctly thickened, begin- 

 ning near the base, a very little greater beyond the 

 middle and shared by both dorsal and ventral portions ; 

 its ventral surface has a dense ventromedial band of 

 long, erect, fine pile. Hind tibia with similar pile on 

 the outer half, giving way only at the apex to appressed 

 pile. The first three segments of the tarsi with 

 ranked brushes of setae; hind tibia a little thickened 

 distally; the bristles are unusually long and stout on 

 the middle tibia and perhaps no shorter but more slen- 

 der on the anterior tibia. All arebasally stout, distally 

 attenuate and oblique. On the hind femur there are 

 4 or 5 ventrolateral, short, grossly tuberculate spines; 

 ventromedially on this femur are 2 or 3 long, pale, basal 

 bristles. Hind tibia with 1 or 2 very slender, dorso- 

 medial bristles, the longest and best developed is near 

 the subapical position. There are 2 long, well devel- 

 oped anterodorsal bristles; ventral surface with 2 or 3 

 long, slender bristles or bristly hairs on the outer half ; 

 the middle femur has a stout, anterior bristle at the 

 outer third, a weak shorter element at the basal third 

 and a stout, short anterodorsal bristle. The ventral 

 margin bears a conspicuous posteroventral fringe of 5 

 long, slender, pale bristles and a few other, short, an- 

 teroventral, bristly hairs. On this tibia the strong 

 bristles are ventral and anterodorsal; there are 5 of the 

 anterodorsal bristles, some of them more than half as 

 long as the tibia, and 5 equally long ventral bristles, 

 if one at the apex is included ; the one near the base is 

 fully two-thirds if not three-fourths as long as the 

 tibia. 



Anterior femur with a short bristle anterodorsally 

 near the base, another near the apex with 3 postero- 

 dorsal bristles. This tibia has 5 rather short, slender, 

 anterodorsal, bristly hairs; 3 or 4 longer, posterior, 

 slender bristles or bristly hairs, 4 quite long, postero- 

 ventral bristles and 2 or 3 similar, ventral bristles. 

 Tarsi end in sharp claws strongly bent at the apex, 

 well developed pulvilli, and a curved, bladelike, long 

 empodium. 



Wings: The wings are broad, the marginal cell is 

 closed with a comparatively long stalk; the anterior 

 branch of the third vein ends almost at the wing apex ; 

 the posterior branch ends some distance to the rear ; first 

 posterior cell widely open, but very slightly narrowed ; 

 end vein of the discal cell and the fourth posterior cell 

 in almost complete alignment; the anterior crossvein 

 enters the discal cell shortly before the middle. Anal 

 vein closed with a rather long stalk; second basal cell 

 ends with 3 veins, the middle vein quite short, a thyri- 

 dium above; alula as wide as the costal cell above it; 

 ambient vein complete, the fringe of the villi is long. 



Abdomen: The abdomen is comparatively elongate, 

 with a slight tendency to be narrowed through the 

 middle; the surface is not punctate or so minutely 

 punctate as to scarcely justify this term. Pile of the 

 abdomen scanty, quite fine and suberect; sides of first 

 tergite with 3 distinct bristles and some shorter pile. 

 Sides of the remaining tergites in the middle on the 

 lateral margin with a distinct, rather stout bristle, ab- 

 sent on the sixth, doubled on the second. Punctation 

 more conspicuous on the female. Seven tergites present 

 in the male, the seventh two-thirds as long as the sixth; 

 7 also in the female with the seventh at most one- fourth 

 as long as the sixth. The male terminalia are quite 

 short, weak, with a narrow, laterally visible and pro- 

 trusive process. Female terminalia still smaller and 

 consisting of a short, conical protrusion. 



Distribution : Neotropical : Dissmeryngodes antica 

 Wiedemann (1828); dispar Walker (1855). 



Genus Centrolaphria Enderlein 



Centrolaphria Enderlein, Zool. Anzeiger, vol. 44, p. 241, 1914. 

 Type of genus : Centrolaphria columMana Enderlein, 1914, 

 by original designation. 



The following is Enderlein's description in trans- 

 lation : 



Male. The thickened hind femur bears below both on the 

 outside and inside a series of some strong, tuberculate spines 

 (Dornen), four on each side. Abdomen very slender, the second 

 and third segments somewhat smaller or reduced in size ; 

 the fourth to last segments form a weak club. Apex of abdomen 

 formed as a half circle and bent downward. Centrolaphria 

 columbiana has much similarity to Laphria transatlantica 

 Schiner, 1S6S, from South America but from the description 

 of that species it cannot be determined with certainty if it be- 

 longs to this genus. 



Distribution : Neotropical : Centrolaphria columbiana 

 Enderlein (1914). 



Centrolaphria is possibly similar to Dissmeryngodes 

 Hermann. 



