Plate XXIX (I) 



MIMICRY 



(i) The nauseating and little persecuted Heliconid, Lycorea atergates. (2) The 

 female of Perhybris pyrrha, which mimics Lycorea, though the male (3) is a 

 perfect Pierid, except that the incipient black and yellow mottling of the under- 

 wing is very faintly perceptible on the upper surface. (4) The nauseating Heliconius 

 eucrate, imitated by (5), the Pierid, Dismorphia arsinoe, which still retains traces 

 of white on the hind-wings, (6) Leptalis amphinoe, and (7) the moth Pericopis 

 crescides, which flies by day. All these insects are coloured black, reddish yellow 

 and bright yellow. (8) The nauseating hyaline butterfly, Methone confusa. 

 (9) The Pierid butterfly, Dismorphia orisi, which mimics it. The tinge of white 

 on the hind-wings is more or less concealed by the usually more retracted position 

 of these wings. (10) A Wasp. (11) A butterfly, Isandra utriera, which mimics this 

 wasp. (12) The black and yellow beetle, Calopteron bifasciatum. (13 to 15) Capri- 

 corn beetles which mimic the latter. Pteroplatys, Lophonoceras hirticonis, and 

 Tropidosoma spencii. 



Plate XXIX (II) 



INSECTS WHICH MIMIC LEAVES AND TWIGS, AND SOME OTHERS 



(i) Praying Mantis, a Locustid with green leaf-markings and a mildew-like patch 

 on the fore-wings, which alone are visible in the nesting position. (2) Fore and 

 hind wing of the Locustid, Pterochroza arrosa ; the first showing perfect leaf- 

 markings of green, brown and white, while the hind-wing shows a characteristic 

 recognition-mark. (3) The Bark-bug, Phloea corticaria. (4) The Leaf-bug, Diactor 

 bilineatus. (5) Stick-Weevil. (6) Cicada or Cigarra. (7) Larval form of same, 

 (8) Lantern Beetle or Fire-fly, Pyrophorus noctilucus. (9) Perandra mandibularis, 

 which fells trees with its mandibles. (10) The Palm- Weevil, Rhynchophorus 

 palmarum. (11) The Giant Ant, Dinoponera grandis. (12) Sauva soldier. 

 (13) Sauva queen. (14) A Hornet, Pepsis albomaculata. (15) A Fly which mimics 

 it, but which has only two wings; beneath these are small balancers. (16) A 

 Locustid Stick-insect. 



Photographed from specimens collected and compared by the Author, and a few 

 specimens from the Natural History Museum of Freiburg, photographed by 

 Emil Engel, Freiburg i. Br. {about one-half natural size)' 



344 



