Plokiophiloides bannaensis, Luo & Peng & Xie, 2021

Luo, Jiuyang, Peng, Yanqiong & Xie, Qiang, 2021, First record of the cimicomorphan family Plokiophilidae (Hemiptera, Heteroptera) from China, with description of a new species of Plokiophiloides, ZooKeys 1021, pp. 145-157 : 145

publication ID	https://dx.doi.org/10.3897/zookeys.1021.56599
publication LSID	lsid:zoobank.org:pub:B30951E8-B9E2-4FA3-9771-6BAD86F8AA17
persistent identifier	https://treatment.plazi.org/id/738A74B1-4FC3-4DD1-983A-53A5B0CF59CA
taxon LSID	lsid:zoobank.org:act:738A74B1-4FC3-4DD1-983A-53A5B0CF59CA
treatment provided by	ZooKeys by Pensoft
scientific name	Plokiophiloides bannaensis
status	sp. nov.

Treatment

Plokiophiloides bannaensis sp. nov. Figures 1 View Figure 1 , 2 View Figure 2 , 3 View Figure 3 , 4 View Figure 4

Material.

Holotype: ♂, China, Yunnan Province, Xishuangbanna, Mengla County, Menglun Town , XTBG: 21°54.965'N, 101°16.293'E; ca. 670 m elev.; leg. Qiang Xie & Jiuyang Luo; 2018-VI-27. GoogleMaps Paratypes: 5♂♂, 5♀♀, and 2 nymphs, same data as holotype GoogleMaps .

Diagnosis.

The new species can be distinguished from the congeners by the combined characteristics: body with red pigment; exocorium with ca. 65 corial glands; whitish precuneal spot on forewing conspicuous; hypocostal lamina extending caudally as a short, pale whitish-yellow projection.

Description.

Macropterous male: Small-sized (1.5-1.7 mm), elongate, relatively flat, forewing exceeding apex of abdomen (Fig. 1A-D View Figure 1 ). Colouration: Ground colour and head dark reddish-brown, ocelli and ventral surface of head paler. Antennal segment I dark reddish-brown; segment II light brown, distal 1/3 pale yellow, with reddish tinge; segment III brown, distal 1/4 paler, reddish; segment VI brown, distal 2/3 reddish. Labial segments I and II light reddish; segments III and IV yellowish-brown. Pronotum and propleura darker, dark brown to blackish-brown; middle of mesosternum with longitudinal suture, nearly black. Coxae dark reddish-brown; trochanters, femora and tibiae yellowish-brown, sometimes with reddish tinge; tibiae gradually darker to the apices; tarsi brown, basal and distal part paler (Fig. 1A-D View Figure 1 ). Corium and clavus light brown to brown, middle part of exocorium and outer part of cuneus dark reddish-brown; basal 2/5 of corium light whitish-yellow; the area around costal fracture and the area of membrane that is behind distal end of cuneus whitish. Membrane light brown, with two inconspicuous longitudinal veins; corial process brown (Fig. 2A View Figure 2 ). Posterior margin of abdominal sterna nearly red.

Surface and vestiture: Head, thorax, corium and clavus forewing and abdomen covered with relatively sparse and uniformly long semi-erect setae (Fig. 1A-D View Figure 1 ). Thorax (except for calli, mesoepleurae and metapleurae) and surface of forewing densely covered by microtrichia (Fig. 3B-G View Figure 3 ). Antennae and legs covered with dense, long, semi-erect setae.

Structure: Head porrect, cylindrical, length subequal to width. Eyes away from collar; minimum dorsal interocular distance greater than 2 × the same distance ventrally. Ocelli large, widely separated from each other. Two pairs of strikingly-long setae placed on dorsal surface of head, one pair of setae located in inner part of eyes, at level of anterior margin of eyes, the other located in the posterolateral part of ocelli (Fig. 3E View Figure 3 ). Antennae thin, terete; segment I thicker than the others, segment II gradually thickening towards the apex, tip of segment IV fusiform; ratio of length of antennal segments I: II: III: IV = 3: 7: 7: 9 (see Table 1 View Table 1 ). Labium slender, nearly reaching to posterior margin of mesosternum, segment I very short and wide; ratio of length of labial segments I: II: III: IV = 1: 2.3: 4: 7. Thorax: pronotum trapezoidal, with distinct collar, one pair of extraordinarily-long setae placed in dorsal surface of collar; lateral margins of posterior lobe straight; posterior margin strongly excavated, broadly exposed mesoscutum; ratio of maximum length to maximum width = 1: 2 (Fig. 3E-G View Figure 3 ). Costal margin of corium almost straight; hypocostal lamina extending caudally as a short, pale whitish-yellow end; costal fracture deep, almost reaching medial furrow, located ca. 3/4 from the base of corium (Fig. 3A, B View Figure 3 ). Venation of hind-wing as in Fig. 2B View Figure 2 . Legs slender, femora and tibiae without heavy spines on distoventral surface, fore- and middle tibiae with a cleaning comb on apices of ventral surface; tarsi long and slender, 2-segmented, segment I very short, segment II elongate; claws long, inner claw longer than outer (Fig. 3H View Figure 3 ). Abdomen: Sterna entire, mediotergites membranous, except for segments I and II with discontinuous remnants of mediotergites and segment VII with a sclerotised medial plate. Abdominal scent gland orifice distinct. Segment VIII with a long, bell-shaped tergum and a U-shaped ventrite. Male genitalia: Pygophore tubular, symmetrical, slightly curved, ventral basal part moderately rounded and bulging. Parameres symmetrical. Phallosoma simple, long. Acus thin, shorter than pygophore, generally curving to the right (Fig. 2D-F View Figure 2 ).

Macropterous female: Colouration, surface and vestiture and structures of head and thorax as in male. Abdomen: Pregenital segments as in male, except for segment VII-IX with sclerotised, medial plates (Fig. 2C View Figure 2 ). Female genitalia: No paragenitalia present, boundary of ventrites VIII and IX are unidentified; proctiger simple.

Etymology.

The specific name is derived from the abbreviated form of Xishuangbanna, the type locality of the new species.

Distribution.

Known only from the type locality, XTBG, Xishuangbanna , Yunnan Province, China (Fig. 5 View Figure 5 ) .