Aulacophoroides

Qiao, Gexia, Jiang, Liyun & Martin, Jon H., 2006, Aulacophoroides (Sternorrhyncha: Aphididae), a generic account, description of a new species from Hong Kong (China) and a key to species, Zootaxa 1299, pp. 57-68 : 59-60

Key to species of Aulacophoroides (apterous viviparous females)

1. Antennal and dorsal body hairs extremely short and blunt, no longer than one­third of maximum diameter of antennal segment III; cauda relatively long, about 0.78 times as long as siphunculi; ultimate rostral segment relatively short, 0.78 times as long as second segment of hind tarsus, with 2 accessory hairs ................ A. virgatae Szelegiewicz

­ Antennal and dorsal body hairs much longer, cephalic (and often also some antennal) hairs distinctly longer than maximum diameter of antennal segment III; cauda relatively shorter, about 0.30–0.45 times as long as siphunculi; ultimate rostral segment longer than second segment of hind tarsus, usually with more than 2 accessory hairs .. ....................................................................................................................................... 2

2. Both dorsal and ventral surfaces of head densely spinulose; cauda with up to 16 hairs; siphunculi gradually tapering, not at all swollen, with their entire lengths densely imbricate .................................................................................. A. hoffmanni (Takahashi)

­ Ventral surface of head much more densely spinulose than dorsal surface; cauda with only 4 or 5 hairs; siphunculi distinctly swollen, or abruptly narrowed in apical quarter, not imbricate over their whole lengths.......................................................................... 3

3. Siphunculi with basal two­thirds parallel­sided or slightly widening towards midlength, and abruptly narrowing towards flange, 2.1–2.3 times as long as the acuminate cauda which is 1.7–1.8 times as long as its basal width; median area of abdomen with only individual hair­base sclerites; head with sparse dorsal spinules only on antennal tubercles; length of hairs on antennal segment III longer than widest diameter of the segment .................................................................................. A. formosana (Takahashi)

­ Siphunculi distinctly clavate in middle third, at least 3 times as long as the rounded­triangular cauda which is hardly longer than wide at its base; median area of abdomen with very large sclerites which loosely coalesce to form transverse segmental bars across at least some segments ( Fig. 12 ); head with fine spinules over whole dorsal surface excepting the median line; length of hairs on antennal segment III shorter than widest diameter of the segment ...................................................... A. millettiae sp. nov.

Figures

FIGURES 12 – 25. Aulacophoroides millettiae sp. nov. Apterous viviparous female, slide­mounted: 12, body; 13, head and antennal segments I – II; 14, antennal segment III; 15, antennal segment VI; 16, ultimate rostral segment; 17, mesoternal furca; 18, dorsal body hair and hair­bearing sclerite; 19, sipunculus; 20, cauda; 21, anal plate; 22, subgenital plate. Alate viviparous female, slidemounted: 23, body; 24, antennal segment III; 25, fore­wing.