as large as plates on 6 and 7 phalaenoides (L.) 



3. Siphonal sensillum with long seta adjacent to base; 

 anterior tergal plates of abdominal segment 1 much 



smaller than posterior plate cinerea Banks 



— Siphonal sensillum without long seta near base; ante- 

 rior tergal plate of abdominal segment 1 only slightly 

 smaller than posterior plates, severini Tonnoir 



The larva of sigma is not known. 



Genus Telmatoscopus Eaton 



Species of this genus have a biology very similar to 

 that of Psychoda although they seem to prefer a some- 

 what wetter environment. The larva is not known of 

 either of the California species. 



389 

 Wirth and Stone: Diptera 



been suggostod, with some evidence, that the females 

 dive under water during oviposition. 



Although a good bit of work has been done on the 

 immature stages of Blephariceridae by Kellogg (1903, 

 1907), Kitakami (1931), and Johannsen (1934), the 

 results have been very confusing so far as generic 

 characters are concerned, and not enough western 

 species have been positively associated with adults 

 to permit the preparation of species keys. We at- 

 tempted to make a thorough study of the Nearctic 

 species, but found that though the larvae and pupae 

 could be determined to genera in Kitakami's keys, the 

 adults associated with them did not fall into the 

 expected genera and the larvae did not always agree 

 with the pupae generically. For this reason we are 

 not presenting any keys to the immature stages. 



Key to Adults of California Species of Telmatoscopus 



1. Wings heavily pigmented, giving a mottled appearance; 

 legs annulated: Monterey and San Diego counties 



furcatus (Kincaid) 1899 



— Wings not heavily pigmented; legs not annulated; El 

 Dorado and San Diego counties niger (Banks) 1894 



REFERENCES 



JOHANNSEN, O. A. 



1934. See Diptera references. 

 MALLOCH, J. R. 



1917. See Diptera references. 

 QUATE, L. W., and W. W. WIRTH 



1951. A taxonomic revision of the genus Maruina (Diptera: 



Psychodidae). Wasmann Jour. Biol., 9:151-166. 

 1955. A revision of the Psychodidae (Diptera) in America 

 North of Mexico. Univ. Calif. Publ. Entom., 10:103-273. 

 SATCHELL, G. H. 



1947a. The larvae of the British species of Psychoda 



(Diptera: Psychodidae). Parasitology, 38:51-69. 

 19476. The ecology of the British species of Psychoda 

 (Diptera: Psychodidae). Ann. Appl. Biol., 34:611-621. 



1948. The respiratory horns of Psychoda pupae (Diptera, 

 Psychodidae) Parasitology, 39:43-52. 



1949. The early stages of the British species of Peri- 

 coma Walker (Diptera, Psychodidae). Trans. Royal Ent. 

 Soc. London, 100:411-447. 



SMART, JOHN 



1948. A handbook for the identification of insects of 

 medical importance. Psychodidae, pp. 35-38. British 

 Museum. 



Family BLEPHARICERIDAE 



The members of this family (fig. 14:11), commonly 

 known as "net-winged midges" (fig. 14:11c), are 

 slender, rather delicate flies of medium size, usually 

 having a network of delicate creases in the wing 

 owing to the folding in the pupal case. The adults 

 are generally found resting on streamside rocks or 

 foliage near swift streams. The larvae may be found 

 crawling on rocks in the rushing water of mountain or 

 hill streams, living either directly in the water or in 

 the perpetual spray of waterfalls. The larvae appear 

 to feed on the algal scum on the surface of the 

 rocks. Pupation takes place in the same locality, 

 the pupae being attached firmly to the rocks. It has 



Key to the North American Genera of blephariceridae 

 Adults 



1. Second basal cell open apically (fig. 14: If) 



Blepharicera Macquart 



— Second basal cell closed apically (fig. 14:11c) 2 



2. Vein R 2 . s fused and continuing to wing margin 



Philorus Kellogg 



— Vein Rj, 3 branched, the posterior branch either sim- 

 ulating a cross vein near the base of R, (fig. 14:11c), 

 or elongate 3 



3. Pleura pilose Bibiocephala Osten Sacken 



— Pleura bare Agathon Roeder 



California Species of B I ephar iceridae 



Agathon doanei Kellogg 1903. Santa Clara, Santa Cruz, 



Monterey counties 

 Agathon canadensis (Garrett) 1922. Siskiyou to 



San Bernardino county 

 Bibiocephala comstocki Kellogg 1903. Santa Clara County 

 Bibiocephala grandis Osten Sacken 1874. Siskiyou County 

 Blepharicera jordani Kellogg 1903. San Mateo, Riverside 

 Blepharicera osten sackeni Kellogg 1903. Humboldt, 



Shasta, Napa counties 

 Philorus ancillus (Osten Sacken) 1878. 



Philorus aylmeri Garrett 1923. Modoc to Tulare 



Philorus cheaini Garrett 1925. Sierra County 



Philorus markii Garrett 1925. Alpine Cou,nty 



Philorus sequoiarum Alexander 1952. Tulare County 



Philorus yosemite (Osten Saoken) 1877. Humboldt, 



Mariposa, Tulare 

 Mariposa, Tulare counties 



REFERENCES 



JOHANNSEN, O. A. 



1934. See Diptera references. 

 KELLOGG, V. L. 



1903. The net-winged midges (Blepharoceridae) of North 



America. Proc. Calif. Acad. Sci., 3:187-226. 

 1907. Family Blephariceridae. In Wytsman, Genera 

 Insectorum fasc. 56, 15 pp. 

 KITAKAMI, SHIRO 



1931. The Blephariceridae of Japan, Mem. Coll. Sci., 

 Kyoto Imp. Univ. (B)6:53-108. 

 WALLEY, G. S. 



1927. Review of the Canadian species of the dipterous 

 family Blepharoceridae. Canad. Ent., 59:112-116. 



