Centromeria triangulata, Song & Webb & Liang, 2016

Song, Zhi-Shun, Webb, Michael D. & Liang, Ai-Ping, 2016, Phylogenetic analysis of the Oriental genera of Orthopagini Emeljanov, 1983 (Hemiptera: Fulgoromorpha: Dictyopharidae: Dictyopharinae), with a systematic revision of the genus Centromeria Stål, 1870, Zoological Journal of the Linnean Society 178 (1), pp. 33-87 : 74

CENTROMERIA TRIANGULATA SP. NOV.

FIGS 2M , 26A – J

Type specimens. Holotype: ♂, Philippines, G[Z] amloanga, Mindanao, Cp. 8, 10.xii.1921, F.X. Williams ( BPBM).

Paratypes: Malaysia, 1♂, British N. Borneo, Keningan [u], 12 – 17.i.1959, T . C. Maa ; 1♂ , North Borneo, Tenompok, Mount Kinabalu , 6.ii.1959, T . C. Maa (both in BPBM); 1♀ ( MIZ 313229 ), Nord-Borneo, Waterstradt; Centromeria longipennis Walk. [Schmidt’s handwriting], ♀, Edm. Schmidt, determ. 1915; Mus. Zool. Polonicum, Warszawa, 12/45 ( MIZPAS) .

Etymology. This new species name is derived from the Latin ‘ triangulus ’, referring to segment X with a long triangular process at apical ventral margin.

Diagnosis. The new species is very similar to C. cuspidata sp. nov., but can be separated from the latter by the apical margin of ventral lobes of the pronotum virescent, and the phallobase without pair of lateral lobes.

Description. BL, ♂ 15.8 – 16.9 mm, ♀ 17.8 mm; HL, ♂ 2.2 – 2.6 mm, ♀ 2.7 mm; HW, ♂ 1.5 – 1.7 mm, ♀ 1.7 mm; TL, ♂ 11.8 – 12.6 mm, ♀ 13.9 mm.

Cephalic process in lateral view relatively elongate, distinctly longer than length from anterior margins of eyes to posterior margin of vertex; moderately upturned and ascending at about 20° in front of eyes ( Fig. 26B ). Vertex relatively broad, posterior margin nearly as wide as transverse diameter of eyes; in dorsal view ratio of length to width between eyes about 3.4: 1 ( Fig. 26A ). Pronotum ( Fig. 26A ) with intermediate carinae slightly present in base. Fore femora with a minute spine at apex; hind tibiae with seven lateral spines; hind tarsomeres I with eight or nine apical teeth and tarsomeres II with between eight and ten apical teeth.

Male genitalia with pygofer in lateral view broad and high, distinctly wider ventrally than dorsally (about 3: 1); posterior margin with a short small process near middle, acute apically ( Fig. 26E ). Gonostyles ( Fig. 26E ) relatively small, upper process large and stout, subacute apically. Aedeagus ( Fig. 26G – I ) moderately large, endosomal processes extended posteriorly and curved dorsoanteriorly; phallobase sclerotized and pigmented at base, membranous and inflated apically, with one pair of lateral lobes distinctly short and small, slightly projecting posteriorly, and pair of ventral lobes elongate and thumb-like, directed posteriorly, without spines ( Fig. 26H, I ). Segment X large and elongate, apical ventral margin projecting a long triangular black process, in dorsal view with ratio of length to width near middle about 1.4: 1 ( Fig. 26D ).

Distribution. Philippines (Mindanao), Malaysia (north-eastern Borneo).

Figures

Figure 2. Centromeria species: A, Centromeria curva sp. nov., holotype, male; B, Centromeria cuspidata sp. nov., holotype, male; C, Centromeria deckerti sp. nov., holotype, male; D, Centromeria inflata sp. nov., holotype, male; E, Centromeria inspinata, female; F, Centromeria longipennis, male; G, Centromeria maculata sp. nov., holotype, male; H, Centromeria melichari sp. nov., holotype, male; I, Centromeria nigroapicata, male; J, Centromeria speilinea, male; K, Centromeria spinosa sp. nov., holotype, male; L, Centromeria surgens, male; M, Centromeria triangulata sp. nov., holotype, male.

Figure 26. Centromeria triangulata sp. nov.: A, head, pronotum, and mesonotum, dorsal view; B, head and pronotum, lateral view; C, head, ventral view; D, tegmen; E, male pygofer and segment X, dorsal view; F, male genitalia, lateral view; G, male pygofer and gonostyles, ventral view; H, aedeagus, dorsal view; I, aedeagus, lateral view; J, aedeagus, ventral view.