Unaspis menglunensis, Niu & Feng, 2019

Niu, Minmin & Feng, Jinian, 2019, Two new species of the genus Unaspis MacGillivray, 1921 (Hemiptera: Coccomorpha: Diaspididae) from China, Zootaxa 4555 (4), pp. 573-580 : 575-576

Unaspis menglunensis sp. n.

( Figs 1–7 )

Material studied. Holotype female: CHINA, Yunnan Province, Menglun city, on Murraya paniculata (L.) Jack. leaves, coll. Chou & Yuan, 26.iv.1974 (at NWAFU, 1 adult female on 1 slide).

Paratypes female: CHINA, 2 specimens, same data as holotype (at NWAFU, 1 slide containing 2 adult females) .

Description of slide-mounted adult female: the figures provided below are for the holotype specimen, and (holotype + 2 paratype specimens, range). Body elongate, widest at metathorax; segmentation obvious between prothorax and mesothorax, and between mesothorax and metathorax. Cephalothorax about 2/3 as long as body, head rounded. Antennae round tuberculate, each with 1 long seta and 1 much shorter seta. Anterior spiracles each with a dense cluster of 28–33 parastigmatic pores; posterior spiracles each with 13–18 parastigmatic pores. Lateral margins of prepygidial abdominal segments protruding, those of segments II–III triangular; lateral margins of prepygidial abdominal segments with gland spines, numbering 24–30 on each side (5 or 6 on segment I, 8–10 on segment II, 6–8 on segment III, and 5 or 6 on segment IV). Conical duct tubercles numbering 6–8 on metathorax and 8–10 on abdominal segment I.

Pygidium slightly rounded. Median lobes reduced, replaced by 2 subuliform protrusions. Second and third lobes similar to each other, each well developed, deeply bilobed, the lobules rounded; third lobes sometimes slightly smaller than second lobes. Pygidium with 4 single marginal gland spines on each side: with 1 between the second and third lobes, which is longer than a lobe; 1 lateral to third lobe; and 1 on each of segments V and VI.

Marginal macroducts absent from between median lobes; numbering 7 on each side, with 1 between median and second lobes, 1 between second and third lobes, 1 between lobules of third lobe, 2 on segment V and 2 on segment IV. Dorsal macroducts smaller than marginal ducts, scattered on all segments including segments VII and VIII, numbering about 100 on whole body. Anus rounded, rather small, situated near centre of pygidium. Perivulvar pores absent.

Host. Murraya paniculata (L.) Jack. ( Rutaceae )

Etymology. The specific epithet is a combination of Menglun, the type locality, and the Latin “- ensis ”, meaning “from”.

Distribution. China (Yunnan Province).

Comments. Unaspis menglunensis sp. n. is very similar to U. yanonensis , but di?ers in having (characterstates on U. yanonensis are given in brackets): (i) median lobes reduced, replaced by two subuliform protrusions (median lobes well developed); (ii) anterior spiracles each associated with a dense cluster of 28–33 parastigmatic pores (12–15 pores); and each posterior spiracle associated with 13–18 parastigmatic pores (0–6 pores).

Figures

FIGURES 1–7. Unaspis menglunensis Niu & Feng, sp. n., adult female: 1, whole body; 2, antenna; 3, anterior spiracle; 4, posterior spiracle; 5, detail of dorsal macroduct; 6, duct tubercle; and 7, pygidium.