194 Rev. T. A. Marshall's monograph of 



33. Apanteles decorus, Hal. 



Microgaster decorus, Hal., Ent. Mag., ii., 245, 3' ? ; 



Apanteles decorus, Reinh., Berl. ent. Zeit., 1831, 



p. 38, ? . 

 Black ; palpi testaceous, fuscous at the base ; belly and legs rufo- 

 testaceous ; hind coxae and trochanters black ; femora black at the 

 base beneath, the hind pair also with a dark line above ; hind tibiise 

 fuscous at the apex, the extreme base pallid, theh tarsi mostly 

 fuscous, the spurs pale. Wings hyaline, stigma fusco-ferruginous, 

 squamulae black. Mesothorax and scutellum very finely coriaceous, 

 almost smooth, shining. Metathorax and segments 1 — 2 the same. 

 Segment 1 a little longer than broad, its sides parallel, truncate at 

 the apex ; 2 half as long as 3, suturiform articulation curved ; the 

 other segments smooth, iridescent. Terebra as long as the abdomen, 

 with the valves shghtly dilated and compressed, straight nearly 

 to the apex, afterwards a little decurved. Valvula ventralis 

 acuminated, not surpassing the anus. ^ ? . Length, 1^ ; wings, 

 3f hn. 



The legs are variable, sometimes fuscous, the fore 

 femora and tibiae beneath, the 4 posterior femora with a 

 lateral line, and the base of their tibiae, testaceous ; the 

 legs of the 3" are usually darker than those of the 2 , and 

 the antennae much longer. The ? differs from that of 

 emarginatus, Nees, in having the hind femora and tro- 

 chanters testaceous, the antennae and terebra longer, 

 and the stigma unicolorous. Nevertheless, according to 

 Haliday (MS. note in Brit. Mus.), his decorus and 

 annularis are the same species ; the latter is indis- 

 tinguishable from emarginatus, Nees, whence it would 

 follow that the three ought to be united. According to 

 Reinhard, decorus, Hal., is distinct ; annularis, Hal., and 

 emarginatus, Nees, probably the same, and this oi^inion, 

 which is supported by the appearance of the specimens, 

 is here adopted. 



Taken occasionally by Haliday on the oak and larch ; 

 a ? by me near Abergavenny. Bred by Elisha, two 

 females and one male, from Conchglis dilucidana, Ste. ; 

 these males have the legs mostly testaceous. In 

 Germany Moschler reared a ? from. ArggrestJiia Goedart- 

 ella, L., feeding in catkins of the birch, 



