Fiorinia dinghuensis Wei & Feng, sp. n.

Fiorinia dinghuensis Wei & Feng sp. n.

(Figs 9–16)

Material examined. Holotype: adult female, China: Guangdong Province, Dinghu Mountain, 4-vi-1963, Coc63255, coll. Chou IO (NWAFU).

Paratypes: data same as holotype, 4 adult females (NWAFU).

Description, n=5. Mounted adult female. Appearance in life not recorded. Body 754–1041 μm long (holotype 620μm long); 481–592 μm wide (holotype 509 μm wide). Body outline oval to fusiform. Derm membranous except for pygidium. Cephalothorax. Antennae present close together on a sclerotized area on anterior margin of body; each with a long seta; without an interantennal process. Anterior spiracles each with 5 trilocular pores; pores absent from posterior spiracles. Pygidial lobes. With 2 pairs of lobes: L1 deeply sunk into pygidium, strongly zygotic, each lobe rather pointed and with 4 notches on inner margin; L2 bilobed, inner lobules larger than outer lobules, rounded on apex, with 1 notch on each margin; outer lobules rounded on apex, with 1 obvious notch on outer margin. Setae. With 1 pair of setae present between L1; 1 pair between L1 and L2, and a pair on margins of abdominal segments IV, V and VI. Gland spines with 6 pairs of short spines, with 2 pairs present on abdominal III and 3 pairs on abdominal segments IV plus 1 pair between Gland tubercles: 28–32 pairs present marginally on cephalothorax plus abdominal segment I. Macroducts. Marginal macroducts 2-barred, with 1 pair between L1 and L2, 1 pair on abdominal segment VI, 2 pairs on each of abdominal segments IV and V but none between L1. Submargial and submedial macroducts absent. Ventral microducts few and scattered. Anal opening small, 12–14 μm in diameter, positioned 37–45 μm from anterior margin of pygidium and 108–114 μm from the base of L1. Perivulvar pores in 5 groups, 3–5 in median group, 10–14 in each anterolateral group and 16–20 in each posterolateral group.

Remarks. The new species can easily be distinguished from other Fiorinia species by the presence of a sclerotized area on the anterior margin of the head.

Fiorinia dinghuensis is similar to F. fioriniae Targioni-Tozzetti, 1867, and F. proboscidaria Green, 1900, in having 2 pairs of pygidial lobes, but can be distinguished by (character states for F. fioriniae in brackets): 1) the presence of 28–32 gland tubercles on the margins of cephalothorax plus abdominal segment I (absent), and 2) absence of gland spines between L1 and L2 (present). F. dinghensis differs from F. proboscidaria by (character states for F. fioriniae in brackets): 1) absence of an inter-antennal process between antennae (with a prominent inter-antennal process), and 2) absence of gland spines on abdominal segments V, VI and VII (present).

Host. Acronychia pedunculata (Linn.) (Rutaceae).

Etymology. The specific epithet refers to Dinghu Mountain, Guangdong Province, China, the type locality.

Distribution. China (Guangdong).