228 



UNITED STATES NATIONAL MUSEUM BULLETIN 2 24 



anterior legs, and other points, is left without a name 

 and the new name Molobratia is proposed for it. Prob- 

 ably when a complete study of the older species is pos- 

 sible, the genus Dasypogon will be found to be confined 

 to the Palaearctic region. 



Distribution : Nearctic : Dasypogon rubiginosus Bigot 

 (1878). 



Neotropical: Dasypogon annulitarsis Rondani 

 (1868) ; aurarius Wiedemann (1821) ; cepphicus Say 

 (1829) ; chilensis Macquart (1849) ; costalis Lynch Ar- 

 ribalzaga (1880) ; dorsalis Macquart (1848) ; equestris 

 "Wiedemann (1828) ; fasciatus Macquart (1834) ; flavi- 

 pennis Macquart (1846) ; favipennis Wiedemann 

 (1828) ; fraternus Macquart (1846) ; fuscipennis Mac- 

 quart (1834) ; grandis Macquart (1846) ; hirtus Philip- 

 pi (1865) ; lebasii Macquart (1838) ; leptogaster Perty 

 (1833); lugens Philippi (1865); maculipennis Mac- 

 quart (1838) ; mexicanus Macquart (1846) ; mundatus 

 Wiedemann (1828) ; parvus Eondani (1850) ; pumilus 

 Macquart (1838); punctipennis Macquart (1838); re- 

 ticulatus Fabricius (1805) ; rubiginipennis Macquart 

 (1838); rufipes Philippi (1865); rufiventris Wiede- 

 mann (1821); sericeus Philippi (1865); tripartitus 

 Walker (1854). 



Palaearctic: Dasypogon arcuatus Fabricius (1794) ; 

 atratus Fabricius (1794) ; auripilus Seguy (1934) ; 

 brevipennis Meigen (1838) ; fcaudatus Bigot 1881) ; 

 crassus Macquart (1849) ; diadema Fabricius (1781) ; 

 [=analis Fabricius (1794), bohemicus Preyssler 

 (1790), liburnicus Germar (1817), nervosus Meigen 

 (1804), punctatus Fabricius (1781), sicanus A. Costa 

 (1854), umbrosus Brulle (1832)], diadema cylindricus 

 Fabricius (1794) , diadema melanopterus Loew (1869) ; 

 egregius Loew (1869) ; fabricii Wiedemann in Meigen 

 (1820) ; gougeleti Bigot (1878) ; longus Macquart 

 (1838) ; nigriventris Dufour (1833) ; octonotatus Loew 

 (1869), octonotatus rubidus Hermann (1905) ; pehin- 

 ensis Bigot (1878) ; rubidus Hermann (1905) ; rubin- 

 ipes Becker in Becker and Stein (1913) ; fruficauda 

 Fabricius (1S05) ; sapporense Matsumura (1916) ; taka- 

 sagense Matsumura (1916) ; ftenuis Macquart (1838) ; 

 variabilis Brulle (1832). 



Ethiopian: Dasypogon aequalis Walker (1857); 

 atripennis Macquart (1834) ; caffer Wiedemann (1828) ; 

 fdamias Walker (1849) ; dilutus Walker (1860) ; fos- 

 sius Walker (1849) ; fuscipennis Wiedemann (1821) ; 

 laevinus Walker (1849) ; lenticeps Thomson (1869) ; 

 luscinius Walker (1849) ; reinhardi Wiedemann 

 (1824) ; scapularis Macquart (1838) ; torridus Walker 

 (1856). 



Oriental : Dasypogon albonotatus Wiedemann 

 (1821) ; decretus Walker (1860) ; dorsalis Wiedemann 

 (1824) ; imberbis Doleschall (1856) ; incisus Macquart 

 (1855) ; inopinatus Walker (1860) ; inopportunus 

 Walker (1860) ; purpuripenne Matsumura (1916) ; 

 virens Wiedemann (1828). 



Australian : Dasypogon albonotatus Macquart 

 (1847); analis Macquart (1849); australis Macquart 

 (1838); limbipennis Macquart (1846); nigrinus 



Macquart (1849); nigripennis Macquart (1848); 

 occlusus de Meijere (1906). 



Country unknown: Dasypogon annulatus Macquart 

 (1838) ; aphidnus Walker (1849) ; claripennis Macquart 

 (1838) ; decorus Macquart (1838) ; discolor Walker 

 (1854); funebris Macquart (1838); inserens Walker 

 (1851) ; nitens Wiedemann (1828). 



Genus Allopogon Schiner 



Figures 175, 542, 1052, 1061, 1747, 1864, 1870 



Allopogon Schiner, Yerh. zool-bot. Ges. Wien, vol. 16, p. 670, 1866. 

 Type of genus : Dasi/pogon vittatus Wiedemann, 1828, by 

 original designation. 



Medium size flies which are very similar in appearance 

 to Diogmites Loew. They are separated by the moder- 

 ately wider face which below the antenna is at least one- 

 third of the head width. In general the face tends to be 

 a little more extensive below and gently convex over 

 the whole profile, but it is never jn'ominent. Scutellum 

 with bristles; pulvilli well developed. This genus is 

 perhaps of no greater rank than a subgenus. Length 

 15 to 25 mm. 



Head, lateral aspect : The head is comparatively long, 

 the face is moderately produced and gibbous below. 

 The occiput has a row of moderately strong, erect, pale 

 bristles behind on the upper third; its lower pile is 

 abundant. The proboscis is relatively short, directed 

 obliquely forward, distinctly compressed laterally and 

 bears a strong, dorsomedial ridge; just beyond the 

 middle it tapers gradually toward a rounded, pointed 

 apex. The apex bears a few, short hairs. Palpus with 

 two distinct segments of equal length, the second seg- 

 ment more stout and set at an angle and bearing numer- 

 ous, long, stiff hairs. First segment excavated. The 

 antenna is elongate ; the third segment varies from short 

 and strongly spindle-shaped to elongate with nearly 

 parallel sides; in either case it has dorsal setae present. 



Head, anterior aspect: The face is pubescent, with 

 a few moderately long hairs over the upper portion, the 

 gibbosity bears a circlet of approximately 14 long, stout 

 bristles projected obliquely forward and forming a 

 single transverse row with also 1 or 2 additional bristles 

 on either side immediately above. Vertex but little ex- 

 cavated, the ocellar protuberance low, with slanting 

 sides and a pair of very strong, long, divergent bristles. 



Thorax: The mesonotum with an acrostical row of 

 numerous, long, sharp, stiff, backwardly curved hairs ; 

 it is bare immediately on either side of the acrostical 

 row with the remainder of the mesonotum widely cov- 

 ered with abundant, long, stiff, curved pile. Humerus 

 with 3 stout bristles. The lateral bristles are long and 

 stout and consist of 3 notopleural, 2 supraalar, 2 posta- 

 lar and 1 pair of widely separated bristles on the 

 scutellum. The scutellmn is thick but flat with rounded 

 rim, micropubescent and not pilose. Mesopleuron and 

 pteropleuron without bristles; metapleuron with a ver- 

 tical row of 6 stout, black bristles. Pronotal collar 

 with pile only. Middle of mesopleuron behind with a 



