Macroporicoccus ulmi Nan & Deng & Wu 2013, comb. n.
Creators: name: Nan, Nan
name: Deng, Jun
name: Wu, San'An
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Eriococcidae
Macroporicoccus
Macroporicoccus ulmi

description: Macroporicoccus ulmi (Tang & Hao) comb. n.
(Figs 3–22)
Cryptococcus ulmi Tang & Hao, 1995: 429; Xie, 1998: 101; Tao, 1999: 31; Miller & Gimpel, 2000: 90; Wu, 2000: 251, 256; Kozár, 2009: 96.
Material examined. 12 ad ♀♀, China, Shanxi Province, Taigu County, campus of Shanxi Agricultural University in crevices in the trunks of Ulmus pumila, 10 December 1997, Coll. San-an Wu (the measurements and illustration are based on this slide); 4 ad ♀♀, China, Tianjin City on U. pumila, 15 June 1999, Coll. San-an Wu; 7 ad ♀♀, China, Beijing City, Songshan Mountain in the crevices of trunks of U. japonica, 29 May 2012, Coll. Nan Nan.
Redescription of adult female. Body in life sub-globular, orange-red, covered by white waxy ovisac. Body on slide circular or ovate, 0.90–1.45 mm long and 0.70–1.33 mm wide. Antennae (Fig. 7) reduced, 6-segmented, length of each segment (µm): I 14–18, II 8–11, III 6–7, IV 4–6, V 5–6, VI 12–16; segment II with one campaniform sensillum, segment IV and V each bearing a fleshy seta, segment VI with 3 fleshy and 4 long flagellate setae and a pair of coeloconic sensilla at apex. Mouthparts developed, clypeolabral shield (Fig. 8) with 2 small setae in middle of surface; labium (Fig. 9) 3-segmented, 56–62 µm long, with 5 pairs of short setae on apical segment. Thoracic spiracles each 34–40 µm long and atrium 19–21 µm wide, each with a group of quinquelocular (rarely trilocular) (Fig. 12) pores near opening, with 6–21 near each anterior spiracle (Fig. 10) and 6–23 near each posterior spiracle (Fig. 11). Legs (Figs 13–15) much reduced, only distal part of tarsus and complete claw visible; each claw with a denticle near apex; fore and middle claw 9–10 µm long, hind claw stouter, 6–8 µm long; each leg with one pair of tarsal digitules and one pair of claw digitules, all slightly knobbed, tarsal digitule longer than claw, claw digitule nearly equal to length of claw; each leg with several setae around base; hind legs each located on a 51–70 µm long and 42–50 µm wide pore plate (Fig. 16). Anal ring (Fig. 17) circular to oval, 26–28 µm long and 18–26 µm wide, with 6 short setae, each 17–20 µm long, and without pores. Anal lobes absent, each represented by a long flagellate seta, 48–70 µm long at posterior end of body. Vulva (Fig. 18) distinct, located on ventromedial area between abdominal segments VI and VII.
Dorsum (Fig. 5). Setae absent. Macrotubular ducts (Fig. 19) with a cup-shaped invagination, each 20–26 µm long and about 3 µm wide, with an inner ductule 17–19 µm long; numerous, distributed over all surface. Microtubular ducts each with an outer ductule about 2 µm long and a dermal orifice about 2 µm wide; sparse on dorsum. Macrodisc pores (Figs 20, 21) with rim slightly protruding, each about 10 µm in diameter, forming transverse rows across dorsum. Quinquelocular disc pores, each about 5 µm in diameter; few on margin.
Venter (Fig. 6). Setae (Fig. 22) spine- or hair-like, 4–16 µm long, sparsely distributed on venter but with a small group around each leg. Macroducts, microducts and macrodisc pores similar to those on dorsum, present on marginal and submarginal areas. Quinquelocular pores also similar to those on dorsum, but with a group near each spiracle and mouthparts; also distributed on abdominal venter and in marginal and submarginal areas, sometimes with a few near spiracles replaced by trilocular pores.
Host plants. Ulmus japonica, U. pumila, U. pumila ‘Tenue’ (Ulmaceae), Syringa oblata (Oleaceae).
Distribution. China (Beijing, Shanxi, Tianjin).
description: Published as part of Nan, Nan, Deng, Jun & Wu, San'An, 2013, A new felt scale genus Macroporicoccus gen. n. (Hemiptera: Coccoidea: Eriococcidae) from China, with a redescription of Macroporicoccus ulmi (Tang & Hao) comb. n., pp. 170-182 in Zootaxa 3722 (2) on pages 175-176, DOI: 10.11646/zootaxa.3722.2.3, http://zenodo.org/record/5267317