A NEW ARGENTINE GENUS OF THERIINI 
(HYMENOPTERA, ICHNEUMONIDAE)* 
By Charles C. Porter 
Department of Biological Sciences, Fordham University, 
Bronx, New York 10458 
Recent fieldwork in subtropical humid forests of Salta and 
Corrientes Provinces of north Argentina has revealed a new genus 
of the anomalonine ichneumonid tribe Theriini (as defined by 
Townes, 1971, p. 155) and therein most closely related to the 
Palaearctic and Indo-Papuan genus Heteropelma Wesmael. 
Stangepelma, new genus 
(Figures 1-5, Map 1) 
Clypeus: median 2/3 of apical margin practically truncate. 
Mandible : lower tooth about 1/3 as long as upper. Occipital 
carina: joins base of mandible. Frons: with a high vertical lamella 
between antennal sockets. Mcsoscutum: without a transverse 
suture before scuto-scutellar groove. Scutellum: in dorsal view 
gently convex laterad and weakly concave on median 1/3; in 
profile weakly convex. Postpectal carina: complete. Propodeum: 
of normal shape, gaster attached only a little above hind coxae; 
pleural carina absent so that propodeum is not distinctly sepa- 
rated from metapleuron. Fore coxa: without a transverse carina 
on ventral surface. Mid tibia: with one apical spur. Hind femur: 
clavate, its basal half very long and slender, 0.04 as deep as length 
of femur, and its apical half abruptly swollen, 0.11-0.12 as deep 
as length of femur. Hind tarsus: basitarsus 1.8-1. 9 as long as 
segments 2-5 of hind tarsus; second segment in male with a weak 
depression below just beyond middle. Tarsal claws: not pectinate, 
those of front and mid tarsus with an approximately 90 degree 
bend just beyond middle, those of hind tarsus with a 100 degree 
bend at middle and a lobe at base. Wing venation: intercubitus 
joins cubitus basad of second recurrent vein by about 1.0 (male)- 
* Manuscript received by the editor October 14, 1976 
185 
