460 TIPTJLID^E. 



length. Genital organs of male prominent and complex ; a large 

 pair of thick fleshy claspers with some appendages, and a secondary 

 pair of claspers. In the female the genital organs are also large 

 and rather more complex than usual. Legs comparatively short 

 and stout, rather conspicuously hairy; tibia) without apical spurs; 

 empodia distinct. Wings : auxiliary vein absent, probably united 

 with the basal part of 1st longitudinal vein where the latter is 

 slightly thickened and takes a sharp bend downwards, afterwards 

 ending in the costa before the middle of the wing ; 2nd vein 

 emerging from towards tip of 1st and forming a wide sweep, or 

 the apical part is turned up rather suddenly to the costa, ending 

 in it about half-way between the tip of the 1st vein and the wing- 

 tip ; 3rd vein originating at two-thirds the length of the 2nd and, 

 after the usual bend, running straight to above the wing-tip ; 

 anterior cross-vein of moderate length, in a line with the basal 

 section of the 3rd ; discal cell approximately obloug, twice as long 

 as broad ; upper branch of 4th vein forked at or immediately 

 beyond discal cell, the veinlets diverging, lower branch simple ; 

 posterior cross-vein at middle of discal cell ; 5th, 6th and 7th 

 veins all long and nearly straight. Through the absence of the 

 auxiliary vein there is a cell less than usual in the anterior part 

 of the wing, those present being the costal, marginal, and sub- 

 marginal (one only) with four posterior cells. 



Ranc/e. Hawaii, Java, India, Ceylon, and Tropical Africa. 

 Fossil species in amber from Zanzibar and Caffraria. 



The genus was described by Loew in 1845 from a specimen in 

 amber, and was for many years considered an extinct genus. The 

 late Baron Osten Sacken, in his Monograph of the North 

 American TIPULID.I BEEVIPALPI (p. 102), describes a second 

 species (without naming it) from a piece of copal from Zanzibar. 

 He figures a wing, copied from Loew's figure, and characterises 

 the genus, adding from Loew's original description such details 

 as were not distinctly visible in his own species. He suggested, 

 but did not assume, the relationship of the genus to Toxorhina. 

 Later on (1887) the same author, in his historical " Studies on 

 Tipulidre," ii (Berl. Ent. Zeits., xxxiii, p. 185). records the exis- 

 tence of recently captured specimens from Caffraria taken by 

 Wahlberg, in the collection of the Stockholm Museum. Needham 

 (New York State Museum, Bulletin 124, pi. xxvi, fig. 6) repro- 

 duces an enlarged figure of Osten Sac-ken's copy of Loew'"s wing. 

 Prof. Kertesz in his exhaustive catalogue of the Diptera of the 

 "World, now in progress of publication, does not mention the genus, 

 from which I presume that the Caffraria specimens were not 

 named. Loew's original species was S. venusta, . 



Incidentally it may be noted that there exists another genus 

 with a very similar name Steritigomyia, Pokorny erected in 

 3889 (Verb*, zool-bot. Ges. Wien, xxxix, p. 568) for a single 

 species from the Alps, allied to the genus of MUSCID^E, Cynomyia, 

 Eob. Desv. 



