﻿52 



HAB. Nogales, Arizona ; bred from a medium sized, rather 

 scarce Jassid nymph, on wihow (no. 2467). Mr. Koebele remarks 

 that the parasite is hard -to raise. 



Aphclopus Dahn. 



In a male specimen of this genus dissected by me the maxillary 

 palpi are very long and five-jointed, the first four joints subequal- 

 ly elongate, the second much stouter than the third, the fifth 

 nearly one and a half times the length of the preceding. I can- 

 not detect any division of the long first- joint, such as forms the 

 basal one in Anteon and other genera, and the labial palpi are 

 only two-jointed, with the second one elongate-oval and mucn 

 more developed than the first. 



The larval sac of Aphelopus is easily distinguished from those 

 of the other Dryinids by its elongate form, which resembles that 

 of Emboleminae, and probably the genus would be better referred 

 to that subfamily, which forms similar sacs on Orthoptera and 

 has simple tarsi, if it be considered distinct from the Dryininae. 

 A yellow Belytid also was bred from similar elongate sacs on 

 Typhlocybines, sent over to me from Germany by Koebele. It 

 is very curious that these small Typhlocybines can be as readily 

 seized and parasitized by the non-chelate Aphelopus as by the 

 rather im^perfectly chelate Chejogyniis or the perfectly chelate 

 and highly evoluted Pachygonafopiis. Many Typhlocybine Jas- 

 sids were found parasitized bv Aphelopus in Germany by Koebele, 

 but either the larvae died on the way to Honolulu or the climate 

 of the islands proved fatal, for the cocoons yielded no mature 

 insects. The latter are difficult to sex ; in some examples, which 

 are certainly males, the abdomen in dry specimens is so com- 

 pressed as to be laminate ; but this is, I believe, due to post mor- 

 tem collapse of the abdomen. In others the females are simi- 

 larly compressed. In one species, of which males and females 

 were both bred, the face of the former is largely white, in the 

 latter black, and in other two species, which from, the antennae 

 I judge to be males, the face is conspicuovisly ornamented with 

 white. Ashmead, however, describes a species in which the white 

 preponderates in the female sex, so that the sexes cannot be de- 

 termined ofif-hand by the facial coloration. 



Synopsis of species of Aphelopus. 



I (2) Head with the mandibles alone white 



A. arizoiicus ( female j 



