196 
Psyche 
[June-September 
simultaneously by a mid and hind leg from opposite sides. 
Body-Substrate Rub. Pages (1967) reports that Dipljapyx rubs 
the thoracic sternum and abdominal base energetically on the 
substrate. He recognizes that this may be territorial marking, but 
believes that grooming is more probable. 
Discussion 
The grooming patterns of Campodeidae and Japygidae are 
basically similar with one major exception. In Antenna Clean, 
campodeids chew the antenna with the maxillae during passage 
through the mouth, while japygids usually open the mandibles and 
then scrape the antenna rapidly through the open maxillae without 
chewing motions. Japygids can also chew the antenna but do so less 
frequently. The differences in grooming suggest different maxillary 
structures. Dissection of Metajapyx reveals an extraordinarily 
complex lacinia with five pectinate lamellae along the mesal face. 
Since we believe that these lamellae are the structures with which the 
antennae are cleaned; their distribution and function should be 
considered in future dipluran studies. Illustrations of these struc- 
tures can be seen in the following works. 
Japygidae: (note that the last genus is sometimes listed in a separate 
family). 
Indjapyx crivellari (Silvestri) as Parindjapyx (Silvestri, 1932, fig. 
XXXI, 4). 
Burmjapyx major (Grassi) as Japyx (Silvestri, 1922, fig. IV). 
Metajapyx confectus Silvestri (Silvestri, 1947, fig. 2). 
Monojapyx simplex profusa Silvestri as Japyx (Silvestri, 1932, 
fig. XXI, 2). 
Catajapyx confusus (Silvestri) as Japyx (Silvestri, 1929, fig. 2-5). 
Heterojapyx gallardi Tillyard (Snodgrass, 1935, fig. 79). 
Evalljapyx hubbardi (Cook) as E. sonoranus (Silvestri, 1947, 
fig. 3). 
Parajapyx isabellae (Grassi) (Paclt, 1957, fig. 37). 
Anajapygidae: 
Anajapyx vesciculosus Silvestri (Silvestri, 1905, fig. 4). 
Anajapyx hermosus Smith (Smith, 1960, fig. 9). 
Projapygidae: 
Symphylurinus stangei Smith (Smith, 1960, fig. 7). 
