Orthopteroid Insects of Philippine Islands 7 



lated, the lateral margins at this place roundly dilated ; 

 anterior margin rounded. 

 /. Elytra not ciliated or fringed with hairs. .. .Mantidae. 



//. Elytra ciliated Miopterygidae. 



dd. Legs or body appendiculate. (Posterior femora or abdom- 

 inal segments lobate, or the vertex conoidly produced). 

 e. Vertex smooth. Eyes either globose or conoid. . • 



Harpagidae. 

 ee. Vertex tuberculate, conoid or laminately produced. 



Creobotridae. 



cc. Tibiae and likewise the intermediate and posterior femora cari- 



nated above. (Pronotum elongate, the posterior part situated 



back of the transverse sulcus almost three times as long as 



the anterior part.) Vatidae. 



hb. Anterior femora below typically armed on the inner margin with 

 three longer spines between smaller ones. Antennae of the males 

 bipectinate. (Vertex produced into a cone.) Empusidae. 



Synopsis of the Families of Isoptera 



Based on the Winged or Sexed Individuals 



A. Tarsi provided with five distinct segments. Posterior wings fur- 

 nished with a well developed anal field in the form of a jointed 



membranous lobe Mastotermitidae. 



AA. Tarsi provided with only four complete segments. Posterior wings 



never showing a distinct anal field or lobe. 



b. Radius of wing always showing an upper branch from the scale ; 



usually branched beyond, but sometimes simple. .Calotermitidae. 



bb. Radius of wing reduced to only one simple vein Termitidae. 



Based on the Soldiers 



A. Eyes usually with distinct facets ; sometimes colored and prominent, 

 more often reduced to pale spots that are not prominent, with fine 

 facets ; sometimes even rudimentary. Front without a fontanel. 

 Mandibles stout, always dentate on the inner border. 



Calotermitidae. 



AA. Eyes always wanting. Often with a fontanel present. Mandibles 



rarely dentate, however, very variable in this respect. . .Termitidae. 



Families and Subfamilies of the Gressoria or Phasmodea 



A. Middle and hind tibiae provided apically with an impressed triangular 



area Areolata. 



b. Median segment distinct, often much shorter than the metanotum, 

 body apterous. 



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