ADRITYLA, A NEW MILLIPED GENUS 
(CHORDEUMIDEA: CONOTYLIDAE) 
By Nell B. Causey 1 
Introduction 
This is the second of a scries of papers on the widely dissimilar 
North American species formerly assigned to the genus Conotyla. 
In the first (Causey, 1961), the genus Austrotyla was proposed for 
coloradensis, humerosa , montivaga , and specus. The remaining species 
will be reviewed and the basal region of the gonopods described in 
subsequent papers. 
A grant from the National Science Foundation (G- 14486) made 
the completion of this paper possible. 
I am grateful to Dr. Herbert W. Levi for the loan of the speci- 
mens of Conotyla deseretae in the Museum of Comparative Zoology. 
Genus Adrityla, new 
Type species. Conotyla deseretae Chamberlin, 1910, by monotypy. 
Diagnosis. Large bodied (length to 24 mm.), pigmented conoty- 
linids of 30 body segments, distinguished especially by the modification 
of legpair 10 (8 1 ), of which the coxa is greatly enlarged and lobate 
and the telepodite is reduced to 2 or 3 minute segments. The sternum 
of the anterior gonopods is divided, and the small sternites are fused 
to the base of the gonopods. The latter are unsegmented and larger 
than the coxites of the posterior gonopods. 
Relationships. The inclusion of this genus in the subfamily Cono- 
tylinae is justified by the following sexual characters of the male: 
the unsegmented anterior gonopods, the retention of a division between 
the coxal and prefemoral segments of the posterior gonopods, and the 
absence of coxal glands on legpair 11 (8 2 ). The divided sternum of 
the anterior gonopods suggests a close relationship with the Anstrotyla- 
Taiyutyla line rather than with Conotyla , which has this sternum 
undivided. The remarkable modification of legpair 10 surely occurred 
independently in Adrityla, as it has in other widely separated 
chordeumids. 
Distribution. Utah. 
Adrityla deseretae (Chamberlin), new combination 
Figures 1-4 
Conotyla deseretae Chamberlin, 1910, Ann. Ent. Soc. Amer. 3 (4) : 235-236, pi. 
31, figs. 3-8; pi. 32, figs. 1-7. Loomis, 1943, Bull. Mus. Comp. Zool. Harvard 
92(7): 381. Chamberlin and Hoffman, 1958, U. S. Nat. Mus. Bull. 212:98. 
Tayetteville, Arkansas, and Gulf Coast Research Laboratory, Ocean 
Springs, Mississippi. 
