Octaspidiotus shanghaiensis, Wei, Jiufeng & Zhao, Qing, 2016

Wei, Jiufeng & Zhao, Qing, 2016, A new species of Octaspidiotus (Hemiptera, Diaspididae) from China, ZooKeys 605, pp. 83-89 : 85-87

Taxon classification Animalia Hemiptera Diaspididae

Octaspidiotus shanghaiensis sp. n. Figures 1-7

Material examined.

Holotype: 1 adult female: CHINA: Changfeng Park, Shanghai City, 11. IV. 2015, Hongliang Li (NWAFU).

Paratypes. 3 adult females: same data as the holotype (NWAFU).

Diagnosis.

Description, n = 4. Adult females. Field characters: adult female scale nearly oval, flat, dark greyish in colour; exuviae nearly central.

Slide-mounted: Adult female not pupillarial, 810-952 um long (holotype 905 μm long); 756-883 μm wide (holotype is 881 μm in the widest part of the body). Body outline oval, derm membranous except for pygidium (Figure 1). Cephalothorax. Antennae each with 1 seta (Figure 2), distance between antennae is 164.3 μm. Prespiracular pores absent (Figure 3). Pygidium (Figure 5). The pygidium has three pairs of lobes: L1 are well-developed, a small mesal notch is present on or near the apex, and a relative larger notch is present on or near the apex of the outer margin. L1 is 6.7-7.2μm wide and the distance of two lobes of L1 is 1.5-2.1μm wide. Median lobes separated by a space 0.2-0.3 times the width of L1. L2 smaller than L1, with one notch on the outer margin. L3 similar to L2, but smaller. Lanceolate setae on L2 and L3 shorter than these lobes themselves. Plates (Figure 5 and 7) one pair of pointed plates between L1, not extending to the apex of the lobe; 2 pairs of plates between L1 and L2, apically fringed with few fine bifurcated; with 3 pairs of plates similar in size and shape between L2 and L3; with 6-7 pairs of plates lateral to L3. Ducts (Figure 4 and 5). Dorsal macroducts 1-barred-shaped. No marginal macroduct between median lobes. One marginal macroduct between L1 and L2, two between L2 and L3, and 3-4 present between L3. Dorsal submarginal macroducts about the same size as marginal macroducts which are 30-35 μm long. Total dorsal macroducts on dorsum in submarginal and marginal areas of pygidium on each side of body 32-44 (44 in holotype). Dorsal macroducts on abdomen segment IV shorter than on pygidium, with 5-6 macroducts on margin of abdomen segment IV. Ventral microducts are fewer and more scattered than the dorsal macroducts. Anal opening (Figure 5) 22.4-25.5 μm long in diameter, located 46.2-48.7 μm between the base of the anal opening and the base of L1. Perivulvar pores (Figure 5 and 6) present in an arc, divided in four groups, 9-12 anterolaterally and 8-9 posterolaterally.

Remarks.

This species is similar to Octaspidiotus cymbidii Tang, 1984 in the body shape and the pygidial lobes, but can be distinguished by the following characters (those for Octaspidiotus cymbidii in parentheses): 1) without marginal macroduct on abdomen segment III (with 3-4); 2) the three plates between L2 and L3 all equally shaped (the third plate is narrower than the first and the second plates); 3) L1 is separated by a space 0.2-0.3 times the width of each median lobe (by a space 0.5 times the width of each L1); 4) without marginal macroducts between L1 (present).

Host.

Echinochloa crusgalli (L.)

Etymology.

The specific epithet is named after Shanghai, the type locality.

Distribution.

China (Shanghai).