Luzulaspis, Cockerell, 1902

Tanaka, Hirotaka, Sasaki, Daisuke & Kamitani, Satoshi, 2021, A new species of the genus Luzulaspis (Hemiptera: Coccomorpha: Coccidae) from Hokkaido Island, Japan, Zootaxa 4985 (3), pp. 414-422 : 420-421

Key to adult females of species in Luzulaspis (Scotica group)

(modified from Koteja 1979b; Koteja & Howell 1979; Kozstarab & Kozár 1988; and Çalýþkan et al. 2015).

1(0) Antennae situated distinctly closer to apex of labrum than to anterior body margin. Large marginal setae on head twice as long as those on lateral margin. Medial parts of thorax without long ventral setae.......... L. americana Koteja & Howell, 1979

- Antennae situated half-way between apex of labrum and anterior body margin, or slightly closer to labrum. Large marginal setae on head and lateral margin subequal in length. Medial parts of thorax with long ventral setae..................... 2

2(1) Inner edge of tibia with setae subequal to or shorter than tibia width............................................. 3

- Inner edge of tibia with setae at least twice as long as tibia width................................................ 7

3(2) Marginal setae all subequal in length, with rounded apices. Antenna 290–360 μm long... L. minima Koteja & Howell, 1979

- Marginal setae on head and anal lobes conspicuously longer than other marginal setae, with pointed apices. Antenna 360–440 μm long............................................................................................. 4

4(3) Two of apical marginal setae on head, and apical setae of anal lobe, thick, each with base twice as thick as that of other marginal setae or more......................................................................... L. rajae Kozár, 1981

- Thickest 2 apical marginal setae on head, and apical setae of anal lobe, each only slightly thicker than other marginal setae, never more than twice as thick........................................................................... 5

5(4) Stigmatic spines almost same length as other marginal setae............................... L. caricis (Ehrhom, 1902)

- Stigmatic spines clearly longer than other marginal setae...................................................... 6

6(5) Multilocular pores mostly each with 10–12 loculi. Dorsal tubular ducts same shape and size as larger type of ventral tubular duct. Dorsum of head apex with tubular ducts sparsely present................................ L. filizae Kaydan 2015

- Multilocular pores mostly each with 4–8 loculi. Dorsal tubular ducts clearly wider than larger type of ventral tubular duct. Dorsum of head apex without tubular ducts........................................... L. kinakikir Tanaka sp. nov.

7(2) Hind trochanter + femur 228–280 μm long. Antenna 372–460 μm long......................... L. dactylis Green, 1928

- Hind trochanter + femur 312–408 μm long. Antenna 452–648 μm long........................................... 8

8(7) Interantennal setae numbering 10–14. Marginal setae between anterior and posterior stigmatic spines numbering 22–27 on each side. North America........................................................ L. borealis Koteja & Howell, 1979

- Interantennal setae numbering 13–31. Marginal setae between anterior and posterior stigmatic spines numbering 26–39 on each side. Europe........................................................................ L. scotica Green, 1926