ASKETOGENYS ACUBECCA J 
A NEW GENUS AND SPECIES OF DACETINE ANTS 
FROM MALAYA (HYMENOPTERA: FORMICIDAE) 
By William L. Brown, Jr. 1 
Asketogenys new genus 
Worker: With the general characters of Smithistruma, but dif- 
fering in the form and dentition of the mandibles: each shaft mod- 
erately elongate and gently arcuate, subporreet, with a submedian 
cluster of 3 stout teeth; distal to this a large diastema containing 
a single small, isolated subapical tooth; downturned apex with a 
close series of minute teeth and denticles; apical half of mandible 
also with 3 conspicuous paddle-shaped hairs curving dorsomesad 
from the dorsal surface. Free clypeal margin with a slender antero- 
median spine. Head narrow, subcuneiform, with shallow posterior 
excision. Middle of vertex impressed. Antennae slender, 6-merous 
in the usual strumigenite proportions. Eyes small. 
Trunk slender, with conspicuous, raised lamellar dorsolateral mar- 
gins throughout, culminating in acute propodeal spines. Petiolar 
node with a median lamellar fimbria on its anterior face; both nodes 
with voluminous spongiform appendages. Legs long and slender. 
Sculpture predominantly reticulate-punctulate ; gaster smooth, its 
tergum basally costulate in the usual manner. Specialized hairs fairly 
numerous, long, flagelliform. Color ferruginous. Male and queen 
unknown. 
Type species, by present designation: 
Asketogenys acubecca new species 
(Figs. 1,2) 
Holotype worker: Total length (TL) 2.7, head length (HL) 
0.65, head width (HW) 0.40 (cephalic index 61), mandible length 
(ML) 0.195 (mandibulo-cephalic index, or MI, 30), trunk length 
(WL) 0.71, scape L 0.45, greatest diameter of eye 0.03, L hind 
femur 0.57, L hind tibia 0.41, L hind tarsus including claws 0.85, 
L hind metatarsus 0.45 mm. Petiolar node (without appendages) 
0.12 mm wide; disc of postpetiole 0.10 mm long, 0.22 mm wide. 
department of Entomology, New York State College of Agriculture and 
Life Sciences at Cornell University, Ithaca, New York 14850, USA. Research 
and publication aided by grants nos. 5574X and 31662X from the National 
Science Foundation. 
Manuscript received by the editor, March 24, 1972. 
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