1960] 
AlacLcod — Boriomyia 
39 
Nakahara (1956, i960) and Parfm (1956) have used the names 
Boriomyia and Kimminsia in the sense adopted in the present paper. 
Concerning the question of the validity of Boriomyia as a genus 
distinct from Megalomus, this must await a study of the type species 
of Megalomus , the Palaearctic M. tortricoides Rambur, as well as 
a wider variety of species of this genus than has been available to the 
present writer. Carpenter (1940) was able to separate these genera 
on the basis of the position of the radial cross vein with reference to 
the point of origin of R5 in the hindwing, although he felt that species 
which were intermediate in this character would probably be found. 
Recently Nakahara (i960) has observed that B. fidelis possesses a 
median lobe of the fused parameres of the male genitalia (present also 
in B. speciosa) which is said to be lacking in species of Megalomus. 
A second character of B. fidelis considered by Nakahara to be of gen- 
eric importance, the basally fused and apically bifucrate “aedeagus”, is 
present also in at least the Nearctic species M. minor Banks which is 
a Megalomus by the criterion of a lack of the median lobe of the 
fused parameres. 
It is the opinion of the present writer that stable generic limits in 
the Hemerobiidae usually involve greater differences in the basic 
ground plan of the male genitalia than those aduced by Nakahara, 
and frequently correlate with differences in the structure of one or 
more of the immature stages and in constant venational features as 
well. In these respects, Boriomyia seems poorly distinct from Megalo- 
mus and will probably fall as a synonym of this genus. 
Literature Cited 
Banks, N. 1904. A list of the neuropteroid insects, exclusive of Odonata, 
from the vicinity of Washington, D.C. Proc. Ent. Soc. Wash. 6:201-217. 
1905. A revision of the Nearctic Hemerobiidae. Trans. Amer. 
Ent. Soc. 32:21-51. 
1930. New neuropteroid insects from the United States. Psyche 
37:223-233. 
1935. A few new North American Neuroptera. Psyche 42:53-57. 
Carpenter, F. 1940. A revision of the Nearctic Hemerobiidae, Berothidae, 
Sisyridae, Polystoechotidae and Dilaridae (Neuroptera). Proc. American 
Acad. Arts Sci. 74:193-280. 
Fraser, F. 1940. Kimminsia rava (Withy.) in Hampshire. Entomologist 73: 
166. 
1942. A new species of Kimminsia (Neur., Hemerobiidae), with 
historical figures and notes. Ent. Monthly Mag. 78:80-86. 
1959. Mecoptera, Megaloptera and Neuroptera. Handbooks for 
the Identification of British Insects 1(12-13) :l-40. London: Royal Ent. Soc. 
London. 
Friedrich, H. 1953. Neuroptera. Bronns Klassen und Ordnungen des Tier- 
reichs. Funfter Band, 3. Abteilung, XII. Buch, Teil a. Leipzig: Akademische 
Verlagsgesellschaft Geest & Portig K.-G. pp. 1-148. 
