Aulacaspis paralonganae, Tian & Xing, 2022

Tian, Feng & Xing, Jichun, 2022, Two new species of Aulacaspis Cockerell, 1893 (Hemiptera: Coccomorpha: Diaspididae) from China, Zootaxa 5087 (1), pp. 154-178 : 163-168

Aulacaspis paralonganae sp. n.

( Figs. 34–63 )

Material examined. Holotype adult ♀: CHINA: Guizhou Prov., Jiangkou County, Fanjing Mountain , N 27º 91’ 01”, E 108º 69’ 85”, 1700 m altitude, on Schima superba (Theaceae) , / 15 November 2019, / Feng Tian, Xinyi Zheng & Lan Zhang leg., mounted singly on a slide ( GUGC)

Paratype ♀♀: Same data as holotype , 12 ♀♀ mounted singly on slides ( GUGC) .

Description. Slide-mounted adult female (n=13): Body 1190–1340 (1267) µm long, 680–780 (745) µm wide; prosoma swollen, slightly broader than postsoma, margin tending to be ovate, with prosomatic tubercles indiscernible; pygidial margin slightly rounded. Prosoma with anterior margin broadly rounded; broadest at mesothorax, with posterolateral mesothoracic margin enlarged, rounded, and basally slightly constricted; metathorax narrower than mesothorax. Abd. I very slightly narrower than metathorax; abd. II with lateral margins protruding, almost as wide as metathorax; posterior abdominal segments tapering towards body apex.

Prosoma. Antennae separated by half width of clypeus, 85–90 µm; each antenna composed of a small tubercle bearing 1 seta and 1 sclerotised spine. Anterior spiracles each associated with 18–25 trilocular disc pores; posterior spiracles each with 1–9 disc pores (usually 1–4).

Pygidial lobes. Lobes numbering 3 pairs; L 1 mostly 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, minutely serrate on diverging mesal margins, blunt or roundish apically, lobe apices separated by 20–24 µm. Without setae or gland spines between median lobes. L 2 and L 3 well developed, bilobulate. Pore prominences and marginal processes on abd. IV and V margins each almost as long as nearby lobes, the processes minutely serrate.

Ducts. Submedian dorsal macroducts present on abd. II–VI, II and III each with 2 rows; II with front row of 1–4 ducts, rear row 1–4; III with front row 2–4, rear row 4; abd. IV–VI each with a single row; IV with 4 or 5 ducts; V with 4; and abd VI with 1–3, usually 2. Submarginal dorsal macroducts present on abd. II–V: II with a single row of 0–4 ducts; III with 3–6; IV with 4; V with 4. Lateral macroducts occurring on abd. II and III, II with 7–9 ducts and III with 10 or 11. Marginal macroducts absent from between L 1, each side with 1 duct 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 present between III and IV. Ventral microducts few, usually numbering no more than 20, scattered, occasionally concentrated near posterior spiracles.

Gland spines. Marginal gland spines on each side numbering 5 or 6 on abd. IV, and 1 on V; 1 present lateral to each pygidial lobe. Lateral gland spines on each side numbering 14–20 on abd. II, and 16–25 on III.

Perivulvar pores present in 5 groups, with 12–14 in anteromedian group, 24–30 in each anterolateral and 16–24 in each posterolateral group.

Host plant. Schima superba (Theaceae) .

Remarks. Aulacaspis paralonganae sp. n. is similar to A. longanae in body form and L 1 shape, but can be distinguished by the following characteristics of the adult female (character states of A. longanae in brackets): (i) each side of abd. IV with marginal gland spines numbering 5 or 6 (3 or 4); (ii) lateral gland spines on each side numbering 14–20 on abd. II, 16–25 on III (4–11 on II, 6–10 on III); (iii) abd. VI with submedian dorsal macroducts on each side numbering 2 or 3, usually 2 (0–2, usually 1, never with 3); (iv) total dorsal macroducts numbering 28–46, usually 35–40 (21–35, usually 25–30); and (v) body 1190–1340 µm long, 680–780 µm wide (940–1090 µm long, 490–575 µm wide).

Etymology. The species epithet is derived from the Latin prefix ‘ para- ’, meaning resembling, and ‘ longanae ’, referring to A. longanae , meaning that the new species resembles A. longanae .

Figures

FIGURES 34–43. Aulacaspis paralonganae sp. n. Specimen 4: Guizhou, China, on Schima superba leaf. 34. Slide-mounted adult female; 35. Anterior spiracle; 36. Posterior spiracle; 37. Antenna; 38. Dorsal margin of abd. II; 39. Dorsal margin of abd. III; 40. Ventral margin of abd. II; 41. Ventral margin of abd. III; 42. Dorsal margin of abd. V; 43. Pygidial lobes.

FIGURES 44–53. Aulacaspis paralonganae sp. n. Specimen 1: Guizhou, China, on Schima superba leaf. 44. Slide-mounted adult female; 45. Anterior spiracle; 46. Posterior spiracle; 47. Antenna; 48. Dorsal margin of abd. II; 49. Dorsal margin of abd. III; 50. Ventral margin of abd. II; 51. Ventral margin of abd. III; 52. Dorsal margin of abd. V; 53. Pygidial lobes.

FIGURES 54–63. Aulacaspis paralonganae sp. n. Specimen 3: Guizhou, China, on Schima superba leaf. 54. Slide-mounted adult female; 55. Anterior spiracle; 56. Posterior spiracle; 57. Antenna; 58. Dorsal margin of abd. II; 59. Dorsal margin of abd. III; 40. Ventral margin of abd. II; 61. Ventral margin of abd. III; 62. Dorsal margin of abd. V; 63. Pygidial lobes.