Cerochiton javanensis Lambdin & Kosztarab, comb. nov.
Creators: name: Chris J. Hodgson
name: Douglas J. Williams
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Cerococcidae
Cerochiton
Cerochiton javanensis

description: Cerochiton javanensis (Lambdin & Kosztarab), comb. nov.
Cerococcus javanensis Lambdin & Kosztarab 1977: 132 –136.
Phenacobryum javanensis; Tang & Hao 1995: 241. Change of combination.
Type details. INDONESIA, Java, on Grewia columnaris, Zimmermann #36. Depositories: BMNH: holotype adf + 1 paratype adf on same slide + 1/3 paratype adff. USNM: 1/1 paratype adf, 1/12 embryos and 1/1adf with 13 embryos inside.
Material studied. Holotype and paratype ff: INDONESIA, Java, on Grewia columnaris (Malvaceae), no date, Zimmerman (BMNH): 1/2adff (f).
Comment. Adult females of C. javanensis are characterised by the following combination of character-states: (i) dorsum with a reticulate pattern of 8-shaped pores; (ii) lines of reticulation made up of smallest 8-shaped pores; (iii) largest 8-shaped pores restricted to within and around apices of each stigmatic band; (iv) apex of each stigmatic band with groups of 10–18 sunken 8-shaped pores in centre; (v) cribriform plates present in a submedial group of 5–8 on each side of abdominal segment IV; (vi) tubular ducts of two sizes on dorsum, broadest in a line on either side of each reticulation but absent from posterior abdominal segments; (vii) multilocular disc-pores absent; (viii) stigmatic pore bands bifurcated; (ix) spiracular disc-pores near spiracles few but more abundant in each stigmatic pore band apex, and (x) legs stubs absent.
This species is clearly closely related to C. bernardi, described as new above, and C. ficoides. They are all from the Oriental Region. Cerochiton javanensis has the same arrangement of 8-shaped pores and quinquelocular disc-pores at the apex of each stigmatic band, and each species has two sizes of tubular duct, with the broader duct occurring along margins of each lattice-like line of pores. Like C. ficoides, C. javanensis has a bifurcated posterior stigmatic pore band (non-bifurcated in C. bernadi) but C. ficoides differs in having: (i) some multilocular discpores present in transverse bands across abdominal segments VI and VII (absent in C. javanensis); and (ii) a single cribriform plate submedially on each side of abdominal segment IV—although Taiwanese specimens with submedial groups of 3-7 plates (submedial groups of 5-8 plates on each side in C. javanensis). In addition, the layout of the lines of small 8-shaped pores on C. ficoides and C. javanensis appears to be different: the submarginal line on the venter of C. javanensis passes through the spiracles and antennae whereas on C. ficoides it is much more medial; in addition, there are two transverse lines medially on the dorsum of the head and prothorax of C. javanensis whereas these are absent on C. ficoides.
This species is well described in Lambdin and Kosztarab (1977) except that the fleshy setae on dorsal surface of each anal lobe were shorter than illustrated. Also, it is here considered that there are two sizes of tubular ducts on the dorsum as described above.
description: Published as part of Chris J. Hodgson & Douglas J. Williams, 2016, (Hemiptera: Sternorrhyncha, Coccomorpha) with particular reference to species from the Afrotropical, western Palaearctic and western Oriental Regions, with the revival of Antecerococcus Green and description of a new genus and fifteen new species, and with ten new synonomies, pp. 1-175 in Zootaxa 4091 (1) on page 150, DOI: 10.11646/zootaxa.4091.1.1, http://zenodo.org/record/265332