Rhamphocoris guizhouensis, Zhao, Ping, Mao, Runqian & Cao, Liangming, 2019

Zhao, Ping, Mao, Runqian & Cao, Liangming, 2019, Two new and one little-known damsel bug of the subfamily Prostemmatinae Reuter (Hemiptera, Heteroptera, Nabidae) from China, ZooKeys 845, pp. 139-152 : 140-142

Rhamphocoris guizhouensis sp. n. Figs 1-4, 19, 20

Type material.

Holotype: female, China, Guizhou, Liping, Taiping Mountain, 28-VII-2009, 26°14'19.54"N, 109°18'38.59"E, Zhao Ping leg.

Diagnosis.

Body length 5.48 mm. Body color red with black markings, shiny; head and pronotum bicolored, mostly red, but vertex of head, dorsal surface of neck, anteocular area of head, collar, most of posterior pronotal lobe blackish brown to black; scutellum black.

Description.

Color. Body red, shiny. First antennal segment pale yellow, second antennal segments blackish brown, third to fourth antennal segments pale brown; vertex of head, dorsal surface of neck, anteocular area, eyes, anterior margin of collar of pronotum, propleural epimeron, pleuron and sternum of meso- and metathorax, fore wing (except strip or markings on basal part of membrane and basal part of clavus yellowish white) dark brown to blackish brown (Figs 1, 19); posterior pronotal lobe (except basal part), anterior margin of each abdominal segment pale brown to brown; scutellum, small spines of underside of fore femur blackish brown to black; abdomen ventrally pale yellowish brown and laterally blackish brown; strip of basal part of membrane yellowish white (Figs 1, 19), basal part of clavus pale yellowish brown.

Structure. Body clothed with golden yellow setae. Body flattened dorsoventrally. Head with rounded processes ventrally (Fig. 2); pronotum distinctly transversely constricted between collar and anterior lobe and between anterior and posterior lobe; anterior pronotal lobe bulged, arcuately laterally shallowly sulcate, medially longitudinally sulcate; scutellum sub-basally concave and with two small rounded depressions, apical part produced; fore femur somewhat thickened, and beneath with acute angular process. Abdomen oblong, not covered completely by fore wing; posterior margin of abdomen in female straight; fore wing reaches to abdominal tip. Ostiolar peritreme of metathoracic scent gland shown in Fig. 4.

Measurements Female, n = 1. Body length 5.48; maximal width of abdomen 3.33. Length of head 0.71; width of head 0.71; length of anteocular part 0.31; length of postocular part 0.05; length of neck 0.16; length of synthlipsis 0.38; interocellar space 0.19; length of antennal segments I–IV = 0.33, 0.76, 0.67, 0.55; length of rostral segments I–IV =0.31, 0.71, 0.48, 0.19; length of collar 0.19; length of anterior lobe of pronotum 0.48; length of posterior lobe of pronotum 0.67; maximal width of thorax 2.19; length of scutellum 0.67; length of hemelytron 3.76.

Male.

Unknown.

Distribution.

China (Guizhou).

Etymology.

The specific name is derived from the type locality of the species.

Remarks.

The new species resemble to R. hasegawai in body shape and color, but in the latter the head and pronotum are totally black. The new species is similar to R. elegantulus but easily distinguished by the body color: the head (except the vertex) is black; the collar and most of the posterior lobe of pronotum black, the anterior lobe and basal part of posterior lobe red (Fig. 19) (vs. the head and pronotum totally red in R. elegantulus ) ( Ren 1998). The five Chinese species in the genus Rhamphocoris , including the new one described herein, can be distinguished in the above key. The new species is flattened and the single specimen was collected together with the flat bug Aradus sp. ( Aradidae ) under the bark, and possibly feeds on flat bugs. The fifth-instar nymph is red except for the brown to yellow antennae and the blackish brown wing pads (Fig. 20).