SYNOPSIS OF GENUS PHYTHOLAEMA SAYLOR 7 



Kobust-oval, strongly shining above. Lignla fused with mentum; 

 hibriini small, strongly transverse, bilobately emarginate, well hidden 

 under the overhanging clypeus and separated from the latter by a dis- 

 tinct suture; labium flattened, with faint to moderate median longi- 

 tudinal groove. Antennae 8-segmented^ club 4-segmented in male 

 and 3-segmented in female, with the fifth segment in females of vary- 

 ing length; fourth male antennal segment strongly enlarged and at 

 least three times as long as the third segment. Head with front 

 flattened or slightly convex, clypeal suture evident ; clypeus elongate, 

 sides at times nearly parallel, usually slightly convergent anteriorly ; 

 apex of clypeus markedly reflexed; eyes usually moderate in size. 

 Thorax strongly transverse, roundly dilated at sides; basal angles 

 distinct but obtuse, front angles rectangular; basal margin arcuate, 

 not margined, lateral margins entire, ciliate; front margin with 

 membranous border. Elytra very slightly longer than broad (about 

 one-fourth longer than broad at most) , without membranous border, 

 margin ciliate. Pygidium transverse,, visible or not from above; 

 surface slightly convex or flattened, finely moderately densely punc- 

 tured, with short suberect whitish pile over the entire surface and a 

 varying number of long erect hairs scattered over the discal area; 

 sides at base somewhat concave; center of disk often with several 

 small tubercles. Anterior coxae prominent subtransverse ; tibiae dis- 

 tinctly bidentate and with an inner spur (broken off in majority of 

 specimens). Middle and hind femora and tibiae slender and grace- 

 ful, the latter without transverse ridges ; middle tibiae in male with 

 one small apical spur, female with two; hind tibiae in female with 

 two spurs, in male with none. All tarsi with a small subbasal tooth 

 of varying length and prominence. First segment of hind tarsi 

 almost equal in length to the next two combined. Coxae contiguous, 

 metasternum very slightly produced between the middle coxae (espe- 

 cially noticeable in P. mutabilis). Abdomen with six visible free 

 segments, densely finely punctured at center, with whitish pile; first 

 four segments subequal in length, fifth as long as or longer than 

 segments 2 to 4 combined, with membranous apical margin; sixth 

 segment one-half the length of fifth in the male, a little longer in the 

 female; abdomen scarcely at all modified as to armature or sexual 

 differentiation. Propygidium and penultimate ventral abdominal 

 segments closely connate, spiracle on the suture but the latter almost 

 obliterated. 



