Tetricodes pacoensis, Vanslembrouck & Constant, 2018

Vanslembrouck, Adwine & Constant, Jérôme, 2018, Two new species of Tetricodes Fennah, 1956 from Northern Vietnam (Hemiptera: Fulgoromorpha: Issidae), Belgian Journal of Entomology 77, pp. 1-13 : 1-13

publication ID	https://doi.org/ 10.5281/zenodo.13271112
publication LSID	lsid:zoobank.org:pub:6354C307-916C-42CF-A95C-BB3E6CF8A890
persistent identifier	https://treatment.plazi.org/id/933F546A-88A0-4DA8-967E-425715495898
taxon LSID	lsid:zoobank.org:act:933F546A-88A0-4DA8-967E-425715495898
treatment provided by	Felipe
scientific name	Tetricodes pacoensis
status	sp. nov.

Treatment

Tetricodes pacoensis View in CoL sp. nov.

urn:lsid:zoobank.org:act:933F546A-88A0-4DA8-967E-425715495898 Figs 1–3 View Fig View Fig View Fig

ETYMOLOGY. The species epithet derives from Pa Co and refers to the nature reserve where the species was discovered.

TYPE MATERIAL

Holotype ♂ ( Fig. 1 View Fig – dissected, right hind wing mounted): Vietnam, Hoa Binh province, Mai Chau, Pa Co 1200m, 27.IV.2002, day collecting, Leg. S. Belokobylskij ( ZIN).

DIAGNOSIS. This species is similar to Tetricodes similis Chang & Chen (2017) , but differs from the latter by larger lateral tooth of capitulum ( Fig. 2 A View Fig ), rounder anal segment in dorsal view ( Fig. 2 B View Fig ), lateral lobe large and strongly projecting ( Fig. 2 C View Fig ) and general shape of aedeagus and phallobase oval in ventral view ( Fig. 2 D View Fig ). The frons is covered with more, paler spots; with light clypeus ( Fig. 1 D View Fig ). It is also close to T. parvulus Chang & Chen, 2017 but can be separated from the latter by the ventral half of frons brown (yellow in T. parvulus ) and the shape of the ventral lobe of the aedeagus more deeply sinuate apically.

DESCRIPTION.

Measurements and ratios: LT: ♂ (n = 1): 5.7 mm. LTg/BTg = 2.28; LV/BV = 0.47; LF/BF = 1.23.

Head: ( Fig. 1 A–B, D–E View Fig ) dorsal margin of frons emarginate in middle of normal view; vertex greenish with brown margins in dorsal view, anterior margin convex, posterior margin concave and lateral subparallel. Frons carinated, mostly black with large black protuberance, with light median line running from upper margin, with pale transverse clearer band under black protuberance and above postclypeus, with lighter spots near edges of frons; with lateral carinae roundly merging ventrally. Genae yellow with green towards margins. Clypeus brown with yellowish anteclypeus and yellow spot at margin frons. Labium yellow. Scape short, ring-shaped; pedicel bulbous and dark brown.

Thorax: ( Fig. 1 A–B, D View Fig ) green variegated with brown. Pronotum short with disc concave. Mesonotum short but longer than pronotum. Tegulae yellowish brown.

Tegmina: ( Fig. 1 A–B, D View Fig ) elongated, greenish with base and irregular markings in cells brown; veins green; lateral margin slightly bisinuate in dorsal view; apex rounded.

Hind wings: ( Fig. 1 C View Fig ) brown with base paler and veins darker; bilobed; slightly shorter than tegmina. Venation reticulate with main longitudinal veins distinct basally (C, ScP+R, MP, CuA), anal area reduced.

Legs: ( Fig. 1 A–B, D View Fig ) elongate and slender. Pro- and mesofemora variegated greenish brown with yellowish median part. Pro- and mesotibiae variegated brown and greenish; black distally; slightly laminate along external margin, Pro- and mesotarsi brown to black. Metafemora green and yellowish with brown distal marking on ventral face. Metatibiae green and yellowish, brown at base and apex, with two lateral spines on distal half and nine apical spines. Metatarsi mostly greenish dorsally and brown ventrally, basal segment elongate with a strong spine at each side and a row of six smaller spines in between ventrally along posterior margin; second segment with a strong tooth at each side along posterior margin. Metatibiotarsal formula: (2) 9/8/2.

Genitalia ♂: pygofer ( Fig. 2 A View Fig ) narrow and curved, higher than broad, narrowing on ventral 1/ 2 in lateral view, irregular subquadrate. Gonostyli ( Fig. 2 A View Fig ) oval, with large lateral tooth of capitulum on short neck. Anal tube ( Fig. 2 B View Fig ) oval in dorsal view, with two basal lobes, more broad than high. Epiproct ( Fig. 2 B View Fig ) located around basal half of anal tube. Phallobase ( Fig. 2 C View Fig ) with long and narrow process in dorsal margin; lateral process splitting in two branches; with lobe-like protrusion and hook-shaped protrusion in apical part in ventral view ( Fig. 2 D View Fig ). Ventral lobe short with three lobes apically ( Fig. 2 C, D View Fig ). Aedeagus with pair of big lateral lobes, directed dorsally towards long process ( Fig. 2 View Fig C-D).

BIOLOGY. T. pacoensis sp. nov. was collected in Pa Co Nature Reserve at the end of June in moist evergreen low mountain forest at an altitude of around 1200 m.