NO. II LARVAE OF THE ELATERID BEETLES GLEN IO5 



ficial resemblance to the larva of hipiistulatus (Linnaeus), which is 

 readily separated on the basis of group characters. 



Length 13.6 mm. ; greatest breadth 2.75 mm. Fully distended larvae 

 measured up to 18.5 mm. Conspicuous color pattern on dorsum (fig, 

 22, a) consists mainly of bright-brown or reddish-brown patches on 

 pale yellow background, giving superficial appearance of four longi- 

 tudinal dark bands. The darkest and most conspicuous coloring is 

 on the anterior four-fifths of head, anterior two-thirds of prothorax, 

 dorsal plate of ninth abdominal segment, and within the angle of im- 

 pressions on mediotergites of first to eighth abdominal segments. 

 The paramedial patches on first to eighth abdominal segments are 

 large, irregular, and lighter in color. Dorsum slightly rugose ; densely 

 punctate on ninth abdominal segment; a few smaller punctures on 

 other abdominal segments; head and prothorax minutely punctulate. 



Maxillary palpus with fourth segment at least twice as long as third 

 segment. 



Setae even more abundant than in rotundicollis, being most signifi- 

 cant in the following regions : Epicranial plates each bear 8 or 9 

 large setae near center of lateral area, usually arranged as a group 

 of 5 or 6 setae with i seta farther dorsad and 2 setae farther anterad ; 

 each tergite of prothorax carries 35 to 50 setae ; each mediotergite of 

 mesothorax and metathorax bears 20 to 30 setae; medial aspect of 

 femur with up to 8 slender setae; medial aspect of trochanter with 

 4 to 8 slender setae ; each mediotergite of abdominal segments bears 

 15 to 25 setae; sternum of first to eighth abdominal segments bears 

 up to 20 setae. 



Sternum of first to eighth abdominal segments subquadrate, with a 

 deep impression on each side which almost or entirely separates off 

 laterosternites. 



On ninth abdominal segment (fig. 22, c), lateral margins of dorsum 

 bear 3 or 4 blunt "teeth" ; area between pleurite and caudal notch is 

 without punctures and approximates one-tenth (or less) of total length 

 of segment, exclusive of urogomphi. 



Urogomphi (ur, fig. 22, c; fig. 22, e) separate, bifid; prongs sub- 

 equal and very finely punctulate. Inner prong {ipr) large, smooth, 

 somewhat corniform; projecting backward, slightly inward and up- 

 ward, with short, sharp tip turning abruptly upward ; usually with 

 3 setae at base on ventrolateral aspect, at least i being near junc- 

 tion with outer prong. Outer prong {opr) large, smooth, subcylindri- 

 cal, projecting caudodorsad, terminating bluntly rounded ; i very mi- 

 nute seta on inner aspect about halfway along prong, i large seta on 



