6 
Marianne E. Filka and Rowland M. Shelley 
KEY TO GENERA AND SPECIES OF 
KINGS MOUNTAIN DIPLOPODS 
1. Body soft, exoskeleton noncalcified; clusters of modified setae 
adorning head and tergites; terminal setal tufts present posterior- 
ly; males without gonopods; adults less than 3 mm long (Penicil- 
ata, Polyxenida, Polyxenidae Polyxenus fasciculatus Say 
Exoskeleton hard, calcified; setae normal, scattered, males with 
gonopods on 7th or 7th and 8th segments; adults varying in size 
but always longer than 3 mm (Helminthomorpha) 2 
2. Head reduced; males with 8 pairs of legs preceding gonopods . . 3 
Head normal; males with 7 pairs of legs preceding gonopods ... 4 
3. Three pairs of ocelli present; paranota absent; segments arched, con- 
vex dorsally (Polyzoniida, Polyzoniidae) 
Polyzonium strictum Shelley 
Ocelli absent; paranota present, bilobed on segment five (Fig. 4); 
segments narrow, flattened (Platydesmida, Andrognathidae) 
A ndrognathus corticarius CopQ 
4. Ocelli present; paranota absent; adults with more than 20 seg- 
ments 5 
Ocelli absent; paranota present; adults with 19 or 20 segments 
(Polydesmida) 16 
5. Segments with dorsal longitudinal crests 6 
Without this character 9 
6. Collum enlarged, hoodlike, covering epicranial region of head . 7 
Collum reduced, head completely exposed (Callipodida, Caspiope- 
talidae) 8 
7. Epiproct trilobed (Fig. 11); adults with 30 segments; adult length 
not exceeding 26 mm (Chordeumida, Striariidae) 
S triaria sp. 
Epiproct entire; adults with more than 30 segments; adults 40-50 mm 
long (Spirostreptida, Cambalidae) .... Cambala annulata (Say) 
8. Coxal process of gonopod thin, translucent, ensheathing stalk of 
telopodite; flagellum absent (Figs. 25-26) 
Delophon gear gianum ChdimbQxWn 
Coxal process of gonopod thick, opaque, bent laterad apically, not 
ensheathing stalk of telopodite; flagellum present (Fig. 20) 
Abacion magnum {Loomis) 
9. Adults with 28-30 segments (Chordeumida) 10 
Adults with more than 30 segments 11 
10. Ocelli arranged curvilinearly, 6 per row; adults not exceeding 5 mm 
long (Trichopetalidae) Trichopetalum dux {CbdimhQxWn) 
Ocelli in triangular patch, 26 per patch; adults longer than 5 mm 
(Cleidogonidae) Cleidogona medialis Shelley 
11\ Coxae of legs 3-7 of males with lobed extensions (Fig. 16); ocelli 
in ovoid patch; gonopods concealed within body; adults large, 
robust, 80-100 mm long (Spirobolida, Spirobolidae) 
Narceus americanus (Beauvois) 
