ABT. 23 REVISION OF MACROCENTRUS MUESEBECK 



are obviously closely related, the two groups exhibit well-defined dif- 

 ferences, which under some systems of classification may be consid- 

 ered of tribal value. Macrocentrus has the occiput entirely immar- 

 gined, eyes not at all emarginate, first segment of flagellum nearly 

 always much longer than the scape, pronotum medially above flat 

 and always without anteriorly converging keels, the insertion of the 

 abdomen entirely above the upper level of the insertion of the pos- 

 terior coxae, the medius always more or less curved backward near 

 the middle, trochanters usually armed with short teeth at apex on 

 the outer side, longer calcarium of posterior tibia rarely more than 

 half as long as basitarsus, and the ovipositor usually long. Zele, on 

 the other hand, has the occiput distinctly margined, eyes slightly 

 emarginate, first flagellar segment usually no longer than scape, the 

 dorsum of pronotum always with two prominent keels medially that 

 converge anteriorly and set off a small triangular area just in front 

 of the prescutum, the insertion of the abdomen not completely above 

 the upper level of the insertion of hind coxae, medius straight, not 

 at all curved backward near the middle, trochanters always without 

 the apical teeth usually found in Macrocentrus, longer calcarium of 

 posterior tibia always more than half as long as basitarsus, and the 

 ovipositor always very short. 



In addition to Macrocentrus Ashmead included in his tribe Macro- 

 centrini the following genera : Dicranoneura Kriechbaumer, which 

 was proposed for an African species and apparently does not occur 

 in North America; Microtypus Ratzeburg, which is more closely 

 related to the Blacinae than to the Macrocentrinae and should be 

 definitely excluded from the latter group ;^ Amicoplidea Ashmead, 

 based upon Phylax fdlliv&ntris Provancher, which appears from the 

 original description, and from notes made by S. A. Rohwer on an 

 examination of the type in 1915, to be an exothecine rather than a 

 macrocentrine ; and Amicroplus Foerster, which, as indicated by 

 Lyle,"^ must be synonymized with Macrocentrus. 



In 1920 Enderlein erected Paniscozele for a group of seven new 

 species from the Oriental, Ethiopian, and Neotropical regions. 

 Viereck in 1911, however, had proposed Dolichozele for a South 

 American species, which is clearly congeneric. Several years ago 

 I had the opportunity of examining the genotype of Pofniscozele, 

 which is in the Pomeranian Museum of Natural History at Stettin, 

 and a comparison of my notes on P. sumatrana Enderlein with the 

 genotype of Dolichozele, which is in the United States National 

 Museum, has shown conclusively that Paniscozele must be sup- 



* Szepligeti, Ann. Mus. Nat. Hungarlci, vol. 6, p. 426, 1908, has proposed the subfamily 

 Microtypinae for this genus. 



^ Entomologist, vol. 47, p. 257, 1914. 



