Aulacaspis longanae Chen, Wu & Su 1980

Tian, Feng & Xing, Jichun, 2022, Two new species of Aulacaspis Cockerell, 1893 (Hemiptera: Coccomorpha: Diaspididae) from China, Zootaxa 5087 (1), pp. 154-178 : 156-163

Aulacaspis longanae Chen, Wu & Su 1980

( Figs. 1–33 )

Material examined. Sample 1: CHINA: Guizhou Prov., Suiyang County, Wangcao Town , Kuankuoshui National Nature Reserves , N 28º 24’ 39”, E 107º 19’ 55”, 1100 m altitude, on Ficus heteromorpha (Moraceae), 16.vii.2020, Feng Tian & Xinyi Zheng leg., 2 adult ♀♀ mounted singly on slides .

Sample 2: CHINA: Guizhou Prov., Suiyang County, Wangcao Town , Kuankuoshui National Nature Reserves, N 28º 24’ 89”, E 107º 19’ 17”, 1150 m altitude, on Machilus nanmu (Lauraceae), 16.vii.2020, Feng Tian & Xinyi Zheng leg., 6 adult ♀♀ mounted singly on slides .

Sample 3: CHINA: Guizhou Prov., Suiyang County, Wangcao Town , Kuankuoshui National Nature Reserves , N 28º 27’ 58”, E 107º 18’ 50”, 850 m altitude, on Litsea elongata (Lauraceae), 25.vii.2019, Feng Tian & Xinyi Zheng leg., 8 adult ♀♀ mounted singly on slides .

Updated description, not based on type material

Slide-mounted adult female (based on all three samples, n=16). Body 940–1090 µm long, 490–575 µm wide, with prosoma swollen, approximately semicircular, slightly broader than postsoma; prosomatic tubercles not developed, pygidial margin slightly rounded. Prosoma broadest at mesothorax; broadly rounded on anterior margin; mesothorax margin enlarged, rounded apically. Metathorax narrower than mesothorax; body narrowest at abd. I; abd. II protruding laterally, almost as wide as mesothorax, and then abdomen gradually tapering towards posterior end.

Prosoma. Antennae separated by half the width of clypeus, 65–70 µm; each antenna composed of a small tubercle and 1 seta, with 1 or 2 sclerotised spines present on tubercle. Anterior spiracles each associated with 14–25 trilocular disc pores; posterior spiracles each with 1–4 disc pores.

Pygidial lobes. Lobes numbering 3 pairs; L 1 largely sunken into apex of pygidium, base of each L 1 with a mesad linear extension onto ventral derm, these extensions separated from each other by a narrow space; L 1 elongate and divergent, widest separation distance 19–22 µm, divergent mesal margins minutely serrate, lobe apices blunt or rounded. Setae absent from between median lobes. L 2 and L 3 well developed, bilobulate. Pore prominences and marginal processes on abd. IV and V long, the processes minutely serrate.

Ducts. Abd. II – VI with submedian dorsal macroducts in a single row or obscure double rows on each segment; each side with 2–6 (usually 3–5) ducts on II; 4–6 on III; 2–4 on IV; 2 or 3 on V; 0–2 (usually 1) on VI. Submarginal dorsal macroducts usually present on abd. III – V, each side with sometimes 1 or 2 present on abd. II in a single row; 3 or 4 on III; 3 or 4 on IV; 2–4 on V. Lateral macroducts present on abd. II and III, each side with 5–9 on II, and 5–8 on III. Marginal macroducts absent from space between L 1, with 1 between L 1 and L 2, 2 between L 2 and L 3, 2 on each of abd. V and IV, and 1 or 2 between abd. III – IV. Ventral microducts few, scattered, occasionally concentrated near each posterior spiracle.

Gland spines. Marginal gland spines on each side numbering 3 or 4 on abd. IV, and 1 on V; also with 1 lateral to each pygidial lobe. Each side with lateral gland spines numbering 4‒11 on abd. II (usually 7–9), and 6–10 on III.

Perivulvar pores in five groups, with 8–17 in the median group, 15–27 in each anterolateral group and 15–20 in each posterolateral group.

Host plant. Ficus heteromorpha (Moraceae) ; Machilus nanmu and Litsea elongata (Lauraceae) ; and Dimocarpus longan (Sapindaceae) .

Remarks. Aulacaspis longanae is similar to A. pallida ( Robinson 1917) in body shape, but can be distinguished by the following characteristics of the adult female (character states of A. longanae in brackets): (i) dorsal macroducts present on abd. II–VI (on III–VI); (ii) space between L 1 with 1 pair sclerotised spines (space between L 1 without sclerotised spines); and (iii) bases of L 1 gradually tapering, remaining distinct (bases of L 1 not tapered, completely fused). Aulacaspis longanae is also similar to A. neolonganae sp. n.; the differences are discussed below.

Figures

FIGURES 1–10. Aulacaspis longanae sample 1: Guizhou, China, on Ficus heteromorpha leaf. 1. Slide-mounted adult female; 2. Anterior spiracle; 3. Posterior spiracle; 4. Antenna; 5. Dorsal margin of abd. II; 6. Dorsal margin of abd. III; 7. Ventral margin of abd. II; 8. Ventral margin of abd. III; 9. Dorsal margin of abd. V; 10. Pygidial lobes.

FIGURES 11–20. Aulacaspis longanae sample 2: Guizhou, China, on Machilus nanmu leaf. 11. Slide-mounted adult female; 12. Anterior spiracle; 13. Posterior spiracle; 14. Antenna; 15. Dorsal margin of abd. II; 16. Dorsal margin of abd. III; 17. Ventral margin of abd. II; 18. Ventral margin of abd. III; 19. Dorsal margin of abd. V; 20. Pygidial lobes.

FIGURES 21–30. Aulacaspis longanae sample 3: Guizhou, China, on Litsea elongata leaf. 21. Slide-mounted adult female; 22.Anterior spiracle; 23. Posterior spiracle; 24. Antenna; 25. Dorsal margin of abd. II; 26. Dorsal margin of abd. III; 27. Ventral margin of abd. II; 28. Ventral margin of abd. III; 29. Dorsal margin of abd. V; 30. Pygidial lobes.

FIGURE 31. Aulacaspis longanae, slide-mounted adult female. on Ficus heteromorpha leaf. Scale bar = 100 µm.

FIGURE 32. Aulacaspis longanae, slide-mounted adult female. on Machilus nanmu leaf. Scale bar = 100 µm.

FIGURE 33. Aulacaspis longanae, slide-mounted adult female. on Litsea elongata leaf. Scale bar = 100 µm.