KEVISION OF STREPSIPTERA PIERCE. 157 



2S. Genus PENTACLADOCERA Pierce (1908). 



f Halictophagus Perkins, 1905. 



Name derived from izkvre (five) + kMSoc (branch) + nkpac (horn), 

 meaning five-branched antennae. 



Type of genus. — Pentacladocera schwarzii Perkins (1905). 



The genus is parasitic upon Agallia or a nearly related bytho- 

 scopid genus and is at present confined to Australia. 



This genus differs from Pentoxocera in that the five apical joints 

 of the antennae are not all of thin laminate form throughout, but the 

 basal ones of these are of more normal form, and the branches are 

 less thinly laminate. Palpi more slender than in Pentoxocera. The 

 general form of the metathorax, tarsi, and genital segment as in 

 Pentoxocera. 



Differs from HalictopTiagus Curtis (according to Westwood) in 

 that the metathorax is very different, as also is the terminal abdominal 

 segment. Intermediate between HalictopTiagus and Pentoxocera in 

 antennae. 



i. PENTACLADOCERA SCHWARZII Perkins (1905). 



Halictophagus? schwarzii Perkins, 1905. 

 Pentacladocera schwarzii Pierce, 1908. 



Host. — Agallia (?), species; Mittatong, New South Wales (pi. 13, 

 figs. 13, 14). 



Male. — Expanse 3 mm. Black, clothed with extremely delicate 

 sericeous pubescence, which is cinereous in some parts; the extreme 

 tip of the abdomen testaceous; metathorax more or less obscurely 

 pale in some parts, at least along the sutures. Antenna? blackish, 

 third and fourth joint short, subtriangular, with one of the apical 

 angles produced into a long branch, fifth and sixth joints shorter 

 than the preceding, more ring-like, but produced into similar branches; 

 seventh joint lamellate throughout. Wings subhyaline, slightly 

 smoky and iridescent, the nervures very distinct blackish. 



26. Genus PENTOXOCERA Pierce (1908.) 



Halictophagus, subgenus Bruesia Perkins, 1905 (preoccupied). 



Name derived from nkvce (five) + b^oc (branch) + nepac (horn), 

 meaning five-branched antennae. 



Type of genus. — Pentoxocera australensis Perkins, 1905. 



The genus is typically parasitic on the genus Tetigonia, although at 

 present parasites of Hecalus and Paradorydium are included. It is 

 limited in our knowledge to the Orient. It contains at present four 

 species: 



1. australensis Perkins, 1905, parasitic on Tetigonia parthaon 

 Kirkaldy; Queensland. 



