1988] 
Heie & Poinar — Fossil aphid 
157 
hind tarsus about 0.062; widths in the middle in mm: fore femur 
0.072, middle femur 0.060, hind femur about 0.04, fore tibia about 
0.02, middle and hind tibiae 0.025. Hairs on tibiae short, as long as 
basal diameter of antennal segment III or shorter. First tarsal seg- 
ments with several hairs (more than 3). Fore wing (Fig. 3) 2.28 mm 
long; length of the slender pterostigma about 1.13 mm; radial sector 
nearly straight, leaving the basal part of pterostigma 0.74 mm from 
its apex, reaching the apex of the wing 0.09 mm below the apex of 
the pterostigma; media about 1.0 mm long, with invisible proximal 
part and one fork, the proximal branch of the fork being 0.53 mm 
long; cubitus-branches leaving the main vein from points 0.13 mm 
apart, the distal branch strongly curved, the proximal branch nearly 
straight and more strongly pigmented. Hind wing (Fig. 4) about 1.3 
mm long, with two oblique veins. 
Dorsum of the anterior abdominal segments covered by parts of 
the wings and a film of air. Sclerotization and pigmentation of 
abdomen unknown. Presence or absence of dorsal body hairs and 
wax glands impossible to detect. Tergites I-IV with low, broad, 
rounded marginal tubercles, each carrying a very short hair or spi- 
nule (Fig. 2). Siphunculi truncate, about 0.05 mm long, about 0.085 
mm broad at base, 0.037 mm broad at apex, situated rather far from 
each other in nearly lateral positions and rather far ahead, near the 
middle of the margins of abdominal segment V, and without distinct 
flanges (Fig. 2). Drops of fluid from the siphunculi present at their 
apices. Cauda finger- or sausage-shaped, nearly cylindrical, about 
0.14 mm long, about 0.04 mm broad in the middle, with at least 6 
rather short, pointed hairs, two pairs being placed at the blunt apex 
and the remaining two hairs placed closer to the middle in lateral 
positions (Figs. 9 and 10). It is impossible to see if the cauda is 
slightly constricted at base or not constricted at all. Anal plate 
apparently with nearly straight posterior margin or slightly emargi- 
nated (partly covered by an air bubble) (Fig. 9). 
Holotype 
The holotype is included in an amber piece labelled “No. HO 4-7, 
Mindazerius dominicanus Heie & Poinar, Holotype” in the Poinar 
collection of Dominican amber housed at the University of Califor- 
nia, Berkeley, California, USA. 
Type-locality 
Amber mine in the Dominican Republic. 
