Fangumellus flavobadius, Yasunaga, Tomohide, Oh, Minsuk & Lee, Seunghwan, 2016

Yasunaga, Tomohide, Oh, Minsuk & Lee, Seunghwan, 2016, Fangumellus flavobadius: a new genus and species of plant bug from Laos (Heteroptera, Miridae, Mirinae, Mirini), ZooKeys 603, pp. 97-103 : 100

Fangumellus flavobadius sp. n. Figs 1 , 2

Type material.

Holotype male. LAOS: Xiang Khoang Prov., Kham Dist., Phosabous National Protected Area, Namchack Village, [N19°50'57", E103°47'51", 670m alt.], light trap, 2 May 2015, Oh (Coll. No: 150429-MS-29) (AMNH_PBI 00380463).

Diagnosis.

Recognized by the characters mentioned in generic diagnosis and distinctive color pattern. Most similar in general appearance to certain species of Lygus Hahn, Pachylygus Yasunaga or Peltidolygus Poppius (cf. Schwartz and Foottit 1998, Yasunaga et al. 2002); distinguished by somewhat shagreened pronotum without clear punctures, rather flat, not developed scutellum and unique shape of parameres.

Description.

Male: Body yellow, partly tinged with olive green (yellow parts assumed to be more or less greenish when alive); dorsal surface weakly shining, rather matte or roughened, with reddish brown pattern on hemelytron ( Fig. 1A ). Head: Pale brown, shining ( Fig. 1C ); apex of clypeus narrowly rouge ( Fig. 1D ). Antenna: Dark brown; basal quarter of segment II pale reddish brown; basal 1/3 parts of segments II and III creamy yellow. Labium shiny pale brown; apical half of segment IV darkened ( Fig. 1B, D ). Thorax: Pronotum yellowish brown, weakly wrinkled and faintly punctate, with pale olive disk; calli and collar yellowish brown; mesoscutum pale brown; scutellum olive green, shallowly wrinkled; pleura including scent efferent system yellowish brown; propleuron faintly punctate as in disk ( Fig. 1D ). Hemelytron: Pale brown, weakly shining, with two reddish brown, noticeable maculae at base of corium across base of clavus and at posterior half of corium to embolium ( Fig. 1A ); clavus with an obscure mark at middle and narrowly reddish brown apex; cuneus yellowish brown, with darkened apex; membrane smoky brown, with an yellow spot posterior to apex of cuneus. Legs: Coxae and legs yellowish brown ( Fig. 1B ); each coxa and trochanter slightly tinged with olive; apex of metafemur slightly darkened; apices of all tibia reddish brown; all tarsi pale reddish brown; each tarsomere III dark brown. Abdomen: Yellow, widely tinged with green; median parts of abdominal tergites sanguineous. Male genitalia as mentioned in generic description. Female: Unknown.

Measurements

(in mm). Holotype male: Total body length 5.72; head width including eyes 1.18; head height 0.82; vertex width 0.46; lengths of antennal segments I−IV 0.56, 1.80, 0.73, 0.55; total length of labium 1.56; mesal pronotal length 1.18; basal pronotal width 2.21; maximum width across hemelytron 2.63; lengths of metafemur, tibia and tarsus 1.80, 2.57, 0.62; and lengths of meta-tarsomeres I−III 0.21, 0.22, 0.35.

Etymology.

From Latin, flavus (= yellow) combined with badius (= maroon or chestnut brown), referring to the basic color pattern of this new species; an adjective.

Distribution.

Laos (Xiang Khoang).

Biology.

Unknown; only one male was collected using UV light trap.

Discussion.

This new species evidently represents a member of Lygus sensu lato. In the key to species of this complex group from Indo-Australian region ( Poppius 1914), Fangumellus flavobadius actually keys out to Lygus [s.l.] dohrni Poppius, 1914, described from Sumatra, Indonesia. However, this mirid is distinct in having the following characters: Body elongate and large (6.5 mm in total length, 2.5 mm maximum width); apex of clypeus; dark membrane with yellow veins; antennal segment II 2.5 times as long as segment I; scutellum flat; clavus and corium rather strongly punctate than pronotum; and tibiae with brown spines, each of which has a dark, small dot. Judging from the original description by Poppius (1914), his taxon is more probably close to Castanopsides Yasunaga- Mahania Poppius group (cf. Yasunaga and Duwal 2006). Although several recent works (e.g., Schwartz and Chérot 2005) carefully revised the generic placements for the species assigned to the Lygus -complex, dozens of species are still placed in Lygus sensu lato, and, needless to say, require further critical revisions.

Figures

Figure 1. Habitus images of Fangumellus flavobadius, holotype male. A dorsal view B ventral view C head in frontal view D head and thorax in left lateral view.

Figure 2. Male genitalia of Fangumellus flavobadius. A pygophore in ventral view B pygophore in caudal view C right paramere D left paramere E−H endosoma. Abbreviations corresponding to those mentioned in materials and methods section.