385J LARVAE OF THE TENTHREDINOIDEA—YUASA 67 



conical, with five segments, or flattened, with four, sometimes apparently 

 with three; larvae free leaf -feeders and borers in fruits or petioles of leaves. 



The Hoplocampinae as defined by MacGillivray contains at present 

 five genera, Marlattia, Hoplocampa, MacGillivrayella, Hemichroa, and 

 Craterocercus, and represents, together with Dineurinae, a series in which 

 the anal veins have been modified before the loss of the radial cross-vein. 

 Formerly Rohwer (1910, 1911a, 1913b) considered Hoplocampa and 

 MacGillivrayella as constituting a subfamily Hoplocampinae but later 

 (1918c) he abandoned this idea and united these genera with six other 

 genera and subgenera to form the tribe Hemichroini of his subfamily 

 Nematinae, as others have done. With the exception of two genera, 

 Platycampus and Anoplonyx, Rohwer's tribe Hemichroini becomes 

 coextensive with our Hoplocampinae. Cameron (1883) considered this 

 subfamily as forming "a connecting link between the Selandrides and 

 Nematides." There are reasons for indicating a close relation between 

 this subfamily and Nematinae. A study of the larvae confirms the con- 

 tention of Rohwer (1918c) that the grouping of Caliroa and Phyllotoma with 

 the Hoplocampinae, as was done by Konow and Enslin, is untenable. 



It must be stated here that since only three genera, each represented 

 by a single species, were available for this study, the preceding definition 

 of the subfamily is necessarily incomplete. 



GENERA OF HOPLOCAMPINAE 



1(2) Tenth abdominal tergum without caudal protuberances Marlattia Ashmead, 



2(1) Tenth abdominal tergum with caudal protuberances 3. 



3(4) Caudal protuberances more than two in number; larvapods well developed; third 



abdominal segment with five annulets; free leaf-feeders Hemichroa Stephens, 



4(3) Caudal protuberances two in number on caudal projection; larvapods rudimentary; 



third abdominal segment with four aimulets; leaf-petiole borer. Caulocampiis Rohwer. 



Hemichroa Stephens 



Larvae small, greenish; length less than 18 mm.; body slender, tapering 

 uniformly caudad; third abdominal segment with five annulets 2 and 4 

 setiferous; tenth abdominal tergum with several conical caudal protuber- 

 ances on its caudal margin; antennae distinctly conical, with five segments, 

 as long as the longest diameter of antennaria; antennal segment 1 cres- 

 centic, dorsal in position, extending nearly the entire length of antennaria, 

 segment 2 complete or incomplete, reduced to mere line on cephalic 

 aspect, segments 3 and 4 ring-like tho reduced in length on cephalic portion, 

 segment 5 conical or peg-like, bluntly pointed at apex; thoracic legs 

 with tibia subequal in length to femur; larvapods glabrous; spiracles faintly 

 winged; glandubae distinct and large; larvae free leaf -feeders. 



Hemichroa dyari Rohwer. — Larvae yellowish green; length, 16 mm.; 

 head blackish; body with blackish dorso-lateral lines and interrupted 



