14 



DIPTERA 



9. Genus PHILORUS, Kellogg 



Philorus(i). Kellogg, Proc. Acad. Sc. Calif. (3), Zool. Vol. 3, p. 199 (1903) {bilohata). 

 Liponeura (in part). Loew, Stett. Ent. Zeit. Vol. 5, p. 118 (1844) [hilobata). 

 Blepharocera (in part). Macquart, Ann. Soc. Ent. l-"r. (2). Vol. i. p. 61 (1843) {ancilla). 



Characters. — .\n incomplete vein near the posterior margin of the wings; second longitudinal 

 vein simple, without branches; a cross-vein connecting veins 4 and 5. 



Biology. — Males and females and larvae and pupae known. Osten Sacken's specimens of 

 P. yosemite were three males caught on the wing on the bridle-path to the foot of the upper Yosemite 

 Fall (California), 3 p. m., June 6, 1876. No other specimens of this species are recorded until igo3 when 

 Kellogg records (Ps3'Che, Vol. 10, p. 186) the finding on July i5 of larvae and pupae (and male and 

 female flies dissected out from pupae just ready to transform) in the King's River Canon (another great 

 California canon of the western slope of the Sierra Nevada about 60 miles south of the Yosemite). These 

 larvae and pupae were taken from the smooth submerged surfaces of great granite blocks fallen into a 

 swift, little, clear-water stream called Granite Creek which flows into King's River. 



Geographical distribution of species. — Of the three species included in this genus one is 

 found in Europe and two in the mountain region of the western United States. 



1. P. bilobata, Loew, Boll. Soc. Ent. Ital. Vol. i, p. 97 (1869) (Liponeura) (Southern Europe : Greece, 



Italy). — PL 2, Fig. 22. 



2. P. ancilla, Osten-Sacken, Cat. N. Amer. Dipt. (2 ed.i, p. 266 (1878) (Blepharocera) (California). 



3. P.yosemHe, Osten-Sacken, Bull. U. S. Geol. Survey, Vol. 3. p. igS (1877) {Liponeura) (California, 



U. S. A., Yosemite Valley). 



(i) Professor Aldrich writes me that the name P/ii/orus was used by Walker in 1804 for a l^epidopterous genus, but the difference in spelling, 

 slight as it is, constrains me to hold to the present generic name. 



Pages . 



Agathon genus), Röder i3 



Apistomyia (genus), Bigot 8 



Asthenia (genus), Westw. 11 



Asyndulum igenus), Walk. 12 



ancilla. O.S. (g. Philorus) 14 



Blepharocera igenus), Macq. 11, 14 



bella. Loew [g. Hammatorhina) 9 



brevirostris, Loew {g. Blepharocera) 12 



Bibiocephala (genus), O.-S. i3 



bilobata. Loew (g. Philorus) 14 



Curupira (genus), O.-S. 10 



cincrascens, Loew [g. Blepharocera) 12 



capitata, l^oe-w (g. Blepharocera) 12 



comstocki, Kell. (g. Bibiocephala) i3 



doanei, Kell. (g. Bibiocephala) i3 



INDEX 



Pages. 



elegans, Bigot (g. Apisloviyia) g 



elegantiila, Röder (g. Bibiocephala) i3 



fasciata, Westw. {g. Blepharocera) 12 



fasciata, .Schiner Ig. Bhpharoccra) 12 



grandis, O.-S. \g. Bibiocephala) i3 



Hammatorhina genus;, Loew 9 



Hapalothrix (genus), Loew 10 



jordani, Kell. 1,1,'. Blepharocera) 12 



Kelloggina (genus), Will. 10 



limbicornis, Macq. (g. Blepharocera) 12 



limbipennis, Macq. (g. Blepharocera) 12 



Liponeura (genus), Loew 12 



lugubris, Loew ig. Hapalothrix) li 



I*af^es. 



osten-sackeni, Kell. i^'. Blepharo- 



cera) 12, 10 



Paltostoma genus), Brauer 9 



Philorus (genus), Kell. 14 



rufescens. Will. 'g. Kelloggina) 10 



Sackienella (genus\ Will. 10 



schineri. Will. ' g. Paltostoma) 10 



Snowla (genus), Will. 10 

 superbiens. Schiner ig. Paltostoma) 10 



Tanyrhina (genusi, Loew 9 



torrentium, Brauer (g. Cttntpira) 10 



tenuipes. Walk. [g. Blepharocera] 12 



yosemite. O.-S. (i;. Philorus) 14 



