DESCRIPTIONS AND DETERMINATIONS OF SPECIES 



33 



Description of the Female. — Total length .92 mm., length of head 

 .15 mm., length of abdomen .68 mm., width of head .13 mm., width of 

 thorax .15 mm., width of abdomen .35 mm. 



Head small, pointed anteriorly; temporal angles very small, the 

 temporal margins slightly convex and nearly parallel, merging impercep- 

 tibly into the occipital margin, which is slightly pointed. All the hairs on 

 the head are very small; the anterior margin with several transverse 

 rows of four near the front of the head ; another of four immediately in 

 front of the antennae ; one on each side close to the base of the antennae, 

 and transverse row of six immediately behind the antennae ; one on each 

 temporal margin; and a diagonal row of three on each side, extending 

 from slightly behind the antennae toward the occiput. A small brown 

 patch on each side immediately in front of the antennae. 



Fig. 13. — Fahrenholzia pinnata n. sp. ; pleural plates and ventral side of terminal 

 abdominal segments of female. 



Antennae set slightly in advance of the center of the head, the first 

 segment not conspicuously enlarged, and about as long as wide ; the sec- 

 ond segment nearly as wide as the first and slightly longer; the third, 

 fourth and fifth segments subequal in length, and forming a very slight 

 club. Ventral side of the head with a broad keel, which bears a short 

 hair on each side, close to the base of the antennae. A few small hairs 

 about the rostrum, which is close to the anterior margin. 



Thorax small, entirely destitute of hairs, but little wider than the 

 head, and only slightly wider than long; width across anterior and pos- 



