1951] 
Mock ford — Philotarsids 
103 
gonopore plate, apparently absent or at least not sclerotized 
in Philotarsus. 
Genotype: Elipsocus maculosus Aaron 
Aaroniella maculosa (Aaron) 
(PI. 8, Figs. 1, 4, 5, 7; PI. 9, Figs. 3, 4, 5, 6, 8, 9) 
Elipsocus macidosus Aaron (1883, p. 40, pi. 9, fig. 8) 
Philotarsus maculosus (Aaron) Chapman & Nadler (1928) 
No measurements are given in the original description. 
The following are for a typical male and female: Fore 
wing: $ 3.36 mm., $ 2.85 mm. Total body length : $ 2.85 
mm., $ (gravid) 3.24 mm. Antennal length: $ 2.49 & 
2.55 mm., $ 2.10 mm. 
The figure of the fore wing in the original description 
is not very detailed and has at least one inaccuracy — vein 
An is shown with hair, Ax hairless, whereas actually it is 
just the reverse. I here include figures of both wings. The 
male shows a very minute spur vein on the posterior edge 
of the pterostigma; this is lacking in the female. Male 
ocellar interval dark, that of female pale. Both sexes with 
rather numerous long hairs posteriorly on vertex and a 
fuscous lateral band starting just behind head, widening 
on the meso- and metapleura, narrowing again on the 
abdomen, and ending at the sclerotized terminal segments. 
Male genitalia (pi. 8, fig. 5; pi. 9, fig. 4) : phallic frame 
anteriorly rounded and narrow, slightly wider on sides. 
A complex group of ‘accessory sclerotizations’ lies just 
above the frame and is easily visible between its sides. 
Aedeagal arch tuberculate. Hypandrium rather weakly 
sclerotized, hairy. Epiproct (pi. 8, fig. 4) emarginate pos- 
teriorly. Female genitalia (pi. 8, fig. 7 ; pi. 9, figs. 3, 8, 9) : 
lateral gonapophyses triangular, hairy. Subgenital plate 
with wide pigmented areas separated in the middle; apical 
half sclerotized, and a small separate sclerite at extreme 
apex. Gonopore plate large and well sclerotized. 
I have given (Mockford — in press) some biological ob- 
servations and Indiana records of this species. Late-in- 
star nymphs have numerous gland hairs on abdominal ter- 
gites and wing pads, but very few on head, thorax, and legs 
where there are numerous tapering hairs. 
