Ovthopteroid Insects of PJiilippinc Islands 9 



inferior median carina, unarmed or somewhat ob- 

 tuse and spinulose. 

 h. Tegmina and wings missing. Femora triquetrous. 

 Subgenital plate of male galeate or helmet 

 shaped ; operculum of female strongly pro- 

 duced, elongate Donusinae. 



hh. Tegmina and wings often present. Four pos- 

 terior femora at least with distinct upper cari- 

 nae, remote. Subgenital plate of male not 

 helmet shaped, operculum of female not pro- 

 duced. 

 i. Elytra short, roundly ovate. Anterior femora 

 not or little compressed. Ocelli present. 



Phasmatinae. 

 a. Tegmina longer, lanceolate, rarely abbreviated. 

 Anterior femora distinctly compressed prin- 

 cipally towards the base. Ocelli variable. 



Prexaspinae. 



ec. Body together with the legs armed with numerous spines. 



Femora quadrangular, not compressed, usually armed 



above with an apical spine. Tibiae with the apical area 



produced into a spine [Asiatic and Madagascaren 



genera] Heteropterygidae. 



cc. Antennae of the males elongate, of the females verj' short. Me- 

 sonotum quadrate or transverse. Elytra of females covering 

 the greater part of the abdomen. Lateral margins of the ab- 

 domen entirely and strongly foliaceously dilated. . .Phyllidae. 

 AA. Middle and hind tibiae without the impressed triangular area. 



Anareol.ata. 

 b. Median segment much shorter than the metanotum, transverse or 

 a little longer than wide. Body apterous. 

 c. Antennae distinctly shorter than the anterior legs [Old World 



genera] Clitumnidae. 



cc. Antennae longer than the anterior legs, or at least of equal 

 length. 

 d. Anal segment of the male abdomen roof-like, more or less bi- 

 lobed. Operculum frequently compressed, boat-shaped 



[Old World genera] Lonchodidae. 



dd. Anal segment of the male abdomen arclied, truncate. Oper- 

 culum slightly arched, lanceolate [American genera]. 



Bacunculidae. 

 bh. Aledian segment longer than the metanotum or of equal length or 

 frequently much longer than wide. Body always winged. 

 c. Antennae shorter than the anterior legs, or a very little longer. 



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