NO. loco. sYXorsis or si:otroi'IC.il /./j/.vob/.v.k—.i//W.v.i.v />&/.•. 493 



DESCRIPTIONS OF GENERA AND SPECIES. 



Genus LECTERIA Osten Sacken. 



Licteria Ostex Sacken, Studies, etc., 18S7, pi. 2; Berl. Eiit. Zeitschr., vol. :?l, 



p. 206. 

 Psaronius Enderlein, Zo6I. Jahrb., vol. 32, 1912, pt. 1, pp. 50, 51. 



I have inchitlod in this genus Limnobia armillaris Fabricius, made 

 the tj-pe of tliis genus by Osten Sacken, and which has spurlcss 

 tibise; Psaronhis lituratvs EInderlein {=Ti2nila obscura Fabricius) 

 and Lecteria obliterata. new species, which have spurred tibiae. As 

 I have stated in a later paragraph, I beUeve that the tibial spur 

 character has been overdone. The venation of these three species 

 is so remarkably similar that I have no hesitation, in view of the 

 existing data, in referring all three species to the genus Lecteria. 



Lecteria is sufficiently well distuiguished, venatioually, in the 

 extreme length of subcosta, the long radial sector, strongly arcuatiHl 

 at its origm and thence riumhig parallel with radius, the tendency 

 for R3 to shorten and disappear, etc. The described species are all 

 Neotropical, but Mr. Edwards informs me that the British Museum 

 possesses tliiee undescribed species from Africa. I beUeve that the 

 presence or absence of spurs, in this grouj) of species, has the tendency 

 to separate from one another species that are in reahty closely 

 aUied. Thus Enderlein described as LiinnophiUni two species 

 wliich possessed tibial spurs. The type of the genus Lecteria, armil- 

 laris Fabricius, seems to vary considerably in venation. The speci- 

 mens upon wliich Osten Sacken based his genus possessed a super- 

 numerarj' c^o^s vein in cell R3, and hi some specimens another ui 

 cell R5. The types of Limnobia cahpus Walker in the British Museum, 

 as well as the thi'ee specimens I possess, entirely lack these cross 

 veins. It is probably a case comparable to the related genus C'ladura 

 Osten Sacken where cross veins may occur almost anywhere on the 

 wing disk.' 



KEY TO THE SPECIES OF LECTERLi.. 



1. Wings without distinct markings (antenna; with the basal segments yellow, fla- 



gellum black) obliterata, new species. (Guiana) 



Wings with brown markings 2. 



2. Wings with abundant browni dots in all of the ceUa..conspersa Enderlein ^ (Brazil). 

 Wings with the markings larger and confined to the neighborhood of the veins 3. 



3. Wing markings confined to a spot at the base of Rs, along deflection of B.^^^, and 



in cell second R,; cell first M, is hexagonal, the fusion of Cu, and M, slight, 



less than cross vein r-m obscura Fabricius^ (Guiana-Brazil). 



Wing-marking more extensive 4. 



' See Alexander and Leonard, Veoational Variation in Cladura, Jour. N. Y. Ent. Soc., vol. 20, Mar.. 

 101.', pp. 36-39, pi. 4. 

 ' Zool. Jahrbucii., 1912, vol. 32, pt. 1. Stud.Ober die Tipuliden, etc.. pp. 49,50 (flg. D") (as Dadylolabh). 

 ' Syst. Antl., 1805, p. 27 (as Tijmta); Wiedemann, Anss. Zweifl. Ins., 1828, vol. 1, p. 24 (as Limnobia) 



