330 



UNITED STATES NATIONAL MUSEUM BULLETIN 224 



Female terminalia rather elongate and conical, convex 

 above, the sternal piece narrow. 



Distribution: Oriental : Maira aenea Fabricius (1805) 

 [=colorata Boisduval (1835), comes Walker (1849), 

 consors Walker (1859), ?cyama Macquart (1834), fpel- 

 lucida Doleschall (1857)]; albifacies Wulp (1872); 

 aterrima Hermann (1914) ; aurifacies Macquart 

 (1848) ; basifera Walker (1861) ; cambodgiensis Bigot 

 (1878) ; elegans Walker (1856) ; gracilicornis de Mei- 

 jere (1914) ; hispidella Wulp (1872), MspideUa nigro- 

 pilosa de Meijere (1913) ; lepida Walker (1857) ; longi- 

 rostra Bromley (1935); nigrithorax Wulp (1872); 

 nycthemera Wulp (1872) ; paria Bigot (1878) ; requi- 

 sita Walker (1860) ; tuberculata Wulp (1872). 



Australian : Maira appendiculata Bezzi (1928) ; auri- 

 barbis Macquart (1848) ; claripennis le Guillou (1842) ; 

 compta Walker (1861); consurgens Walker (1861); 

 elysiaca Osten Sacken (1881) ; germana Walker (1859) ; 

 gloriosa Walker (1859) [ = consobrina Walker (1859), 

 kollari AVulp (1872) not Doleschall, soda Walker 

 (1859), spectabilis Schiner (1867) not Guerin]; hirta 

 de Meijere (1913) ; kollari Doleschall (1857) ; kubinyii 

 Doleschall (1857); lauta Wulp (1884); Mmbidorsum 

 Bezzi (1928) ; longicornis de Meijere (1913) ; nitida 

 Austen (1915) ; niveifacies Macquart (1849) ; occulta 

 Wulp (1872) ; pachycera Bigot (1878) ; paradisiaca 

 Walker (1859) ; placens Walker (1859) ; smaragdina 

 Bigot (1878) ; sodalis Walker (1859) ; spectabilis Gue- 

 rin (1830) [ = congrua Walker (1861), replens Walker 

 (1861), splendida Guerin (1830)] ; superba de Meijere 

 (1914); tincta de Meijere (1913); tomentosa Wulp 

 (1872); varians Eicardo (1929); villipes Doleschall 

 (1857); waigieiisis Bigot (1878); whitneyi Curran 

 (1936) ; willowsi Curran (1936) ; wollastoni de Meijere 

 (1915). 



See comment under Lampria Macquart. 



Genus Orthogonis Hermann 



Figures 232, 614, 1226, 1235, 2137, 2152 



Orthogonis Hermann, Ent. Mitt, vol. 3, p. 132, 1914. Type of 

 genus: Laphria scapularis Wiedemann, 182S, by original 

 designation. 



Rather large flies, characterized by greatly reduced 

 pile, but strong, numerous bristles. The coloration, 

 including the wings, is almost always black or purplish 

 black. In a few species the wings are pale greyish 

 hyaline, the abdomen sometimes steel blue ; lateral tergal 

 spots of white pollen may be present as well as white or 

 yellow pollen on the thorax. These flies present a 

 strong, general similarity in appearance to Maira 

 Schiner but are unrelated, belonging instead to the An- 

 drenosomini. The proboscis is cylindroid or subquad- 

 rate, slightly depressed dorsoventrally at the apex, 

 the femora and tibiae much reduced in pile in contrast to 

 Maira and they are especially characterized by the 

 alignment of the end vein of the discal cell with the 

 end vein of the fourth posterior cell, usually in an exact 



line, sometimes offset by less than half the length of 

 the end vein of the discal cell. Length 18 to 25 mm. 



Head, lateral aspect : The face is short on the upper 

 half, gradually becoming protuberant, rounded and 

 convex on the lower portion. The eye is of moderate 

 length, anteroventrally recessive, sometimes shortened 

 and always more narrow on the lower half; it may be 

 sometimes reduced in length and strongly flattened an- 

 teriorly. Occiput obliterated on the upper half, its 

 prominence below is due to the recession of the eye. Pile 

 of the occiput scanty and fine and for the most part 

 placed medial to the bristle row. Bristles in the type 

 of genus extend almost to the bottom of the occiput 

 with an additional clump behind the proboscis, or re- 

 stricted to 6 stout pairs on the upper fourth of the 

 occiput. Proboscis moderately long, extending well 

 beyond the face and distinctly though only moderately 

 compressed dorsoventrally towards the apex. Also it 

 is only gently swollen or tapered towards the base, both 

 in dorsal and lateral aspect; the apex is blunt with 

 numerous, stiff hairs apically and immediately below, 

 the only other pile being long, stiff hairs ventrally on 

 the basal third. There is a moderately developed 

 medial ridge present at the base which tapers down to 

 end in the middle or on the outer third; there is a 

 medial groove ventrally below. Palpus rather small, 

 clearly of two segments, both cylindrical, the second 

 with lateral, subapical pore and with apical lateral, 

 dorsal and ventral bristles. The first segment is ex- 

 cavated and fused on the dorsal surface, except on the 

 outer fifth, which is chitinized. 



Head, anterior aspect : The face below antenna one- 

 third the head width and divergent below. Subepisto- 

 mal area large, oblique, concave and nearly plane with 

 medial ridge and bare, except for dorsolateral pollen. 

 Face pubescent, the gibbous portion bearing a medial, 

 triangular patch of long, extremely stout bristles, 7 

 to 14 in number with additional scanty, stiff, bristly 

 hairs which extend on to the upper half of the face. 

 Antenna attached at the upper fourth of the head, or 

 even higher. The first segment is a little longer than 

 the second. The third segment is laterally compressed, 

 usually nearly plane dorsally, gently widening below 

 towards the middle and from the middle to the apex. 

 In the middle it is l 1 /^ times as high as the second seg- 

 ment, the apex without pit but thinned and with a dis- 

 tinct, dorsal, subapical spine which is set a very short 

 distance back from the apex. First segment with a 

 number of stiff bristles ventrally but laterally and dor- 

 sally only at the apex; second segment with longer, 

 subapical bristles dorsally and ventrally ; third segment 

 with 1 or 2 setae dorsally. Front quite short, with 2 

 or 3 slender bristles laterally, or as few as 1 bristle. 

 Vertex deeply excavated, the ocellarium quite large and 

 high with steep sides and bearing 1 pair of very stout, 

 long, divergent bristles sublaterally in the middle, and 

 between the posterior ocelli 2 or 3 pairs of quite short, 

 minute bristles. Anterior eye facets strongly enlarged. 



Thorax: The thorax is pollinose. The pile of the 

 mesonotum is scanty, appressed and bristly or setate, 



