THE MALAYAN MACHiEROTIN^ (CERCOPXD^l) 
By C. F. Baker 
Of the Philippine College of Agriculture, Los Banos 
THREE PLATES AND ONE TEXT FIGURE 
The insects composing this group, remarkable in both struc- 
ture and habit, have been latterly considered to form a sub- 
family in the Cercopidse. When only Machxrota was known, 
this seemed doubtful, but through other recently described 
genera the relationship is much more evident. The habits of 
members of this group distinguish them from all other Cerco- 
pidse, and from most other insects as well; since the nymphs 
live in calcareous tubes, of curious form characteristic of the 
various species, and possess remarkable structural adaptations 
to life in these tubes, which remain attached to their special 
food plants. 
Had the Enderleiniini not been included in the group, the 
Machserotinse would have been easy to define, the remarkable 
scutellar appendage and characteristic structure of the tegmina 
being diagnostic. Schmidt defined the Enderleiniini as having 
the scutellum without spinous appendage, but elongate caudad 
and reaching or exceeding the apex of the abdomen. However, 
Macliseropsis, as illustrated by Lallemand , 1 has a scutellum not 
reaching half the length of the abdomen, though in structure 
otherwise it appears to be somewhat machterotine ; and one of 
Schmidt’s most recent genera, Modiglianella, is very close to 
cercopid genera like Quinquatrus Distant and Hindola Kirkaldy 
( =Carystus Stal). It seems, arguing from structure alone, 
that the tribe Enderleiniini should be transferred to the Aphro- 
phorinse, which already includes far more diverse elements, 
the latter subfamily to be divided into a number of coordinate 
tribes . 2 This would not preclude the possibility of the true 
Machserotinte being offshoots from Enderleinia-like forms. The 
1 Cercopidse of the Genera Insectorum (1912). 
2 In Fauna Brit. India, Rhynch. 6 (1916) 184, Distant describes a new 
genus, Conditor, of which he says, “Allied to Machseropsis.” It does not, 
however, belong in the same tribe with Machseropsis (Enderleiniini), but 
is apparently closely related to Pachymachxrota in the Machaerotini. 
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