REVISION OF SIMOCEPHALUS DAPHNIIDAE 

45 
SN SS 

SS 
SS 
OSS, 
= 2S s 
= 
( 
ZA p 
YAK {x 
APIS 
sal, N 
AN 
SoS 
Bae 
Se 
= 
> 

Fig. 46  S. mirabilis sp. nov., female. A, endite of 2nd trunk limb, B, postabdominal claw, C, Ist trunk limb, D, antennule. 
related with S. serrulatus but differs from it in head shape and the 
absence of denticles on the posterior valve margin below the promi- 
nence. Analysis of the head height in the type specimens reveals that 
it does not differ in this respect from European specimens of S. 
serrulatus (Orlova-Bienkowskaja, 1995a). The denticles of the pos- 
terior margin are present in the types, but they are covered with a 
semitransparent substance. I agree with the opinion of Fryer (1957) 
that S. capensis is a synonym of S. serrulatus. 
S. americanus Birge is described from North America. There is no 
information about the types and type locality. The original descrip- 
tion (Birge, 1878) reveals that this species is closely related with S. 
serrulatus. In the opinion of Birge, it differs from the latter because 
it has a rhomb-like ocellus and the postabdominal claw is covered 
with denticles. Obviously, this is a misunderstanding because S. 
serrulatus has the same characters. 
S. serrulatus var. armata Brehm was described from Venezuela. 
According to Brehm (1956), it differs from the typical form because 
its antennules have ridges covered with denticles. But the typical 
form has the same ridges and denticles, so this variety is a synonym 
S. serrulatus (Fléssner, 1972; Negrea, 1983). The illustration in the 
original description has the caption ‘S. serrulatus var. barbata’. 
Obviously, this is an inadvertent error. 
S. inflatus Vavra was described from Valdivia (Chile) (Vavra, 
1900). There is no information about the types. Vavra does not point 
out any differences between S. inflatus and S. serrulatus. He writes 
that S. inflatus differs from S. capensis in the head shape, small 
ocellus and general body shape. Daday (1905) supposes this name to 
be asynonym of S. capensis, because he found some specimens with 
intermediate characters in Paraguay. Michael & Sharma (1988) 
believe it to be asynonym ofS. serrulatus. lagree with them because 
the original description, provided with a good illustration, contains 
all the important characters of the latter species. 
S. kerhervei and §. aguabrankai, described from Sao Paulo 
(Brasil), are not mentioned in recent literature. There is no informa- 
tion about the types. The illustrations in the original description 
(Bergamin, 1939), suggest that both types are juveniles with denticles 
on the head and a row of denticles along the postabdominal claw. 
The differences between these species and S. serrulatus are not 
indicated. The available material from Sao Paulo does not differ 
from the latter species (Orlova-Bienkowskaja, 1995a). Therefore S. 
kerhervei and. aguabrankai are the junior synonyms ofS. serrulatus. 
S. serrulatus var. productifrons, described from Sumatra (Stingelin, 
1904), is also synonym of S. serrulatus (Sramek-Husek et al., 1962; 
Negrea, 1983). The type material is lost (Frenzel, 1987). According 
to Stingelin (1904), this variety differs from S. serrulatus, S. inflatus 
and S. americanus by the elongate, pointed head and the large 
