Acrorrhinium kranion, Yasunaga, Tomohide, Yamada, Kazutaka & Artchawakom, Taksin, 2013

Yasunaga, Tomohide, Yamada, Kazutaka & Artchawakom, Taksin, 2013, New or little known taxa of the plant bug tribe Hallodapini (Hemiptera: Heteroptera: Miridae: Phylinae) from Thailand, with descriptions of three new species of the genus Acrorrhinium Noualhier, Zootaxa 3647 (3), pp. 429-442 : 431

Acrorrhinium kranion new species

(Figs. 1A–B, 4–7)

Diagnosis. Distinguished from other congeners by the somewhat (posteriorly) ovoid body, grayish brown basic coloration, small eyes, short, blunt-tipped median projection on frons, and noticeable skull-like markings on the hemelytron (Fig. 1B, circled image).

Description. Body generally grayish brown, somewhat ovoid; dorsal surface mat or shagreened, with sparsely distributed, long, silky, erect setae and short, reclining, woolly setae. Head whitish, with irregular sanguineous stripes laterally; frons with a short, thumb-like, blunt-tipped median projection; eye small; vertex wide. Antenna grayish brown, partly tinged with red; segment I coffee brown. Labium shiny dark brown, long, extending beyond apex of metacoxa, reaching abdominal sternum VI or VII. Pronotum with white basal margin; collar area with sanguineous spots; mesoscutum with four tooth-like, dark markings; scutellum arched mesially, with pale apex; pleura dark brown, rather shiny; episternum tinged with red; ostiolar peritreme creamy yellow. Hemelytron irregularly speckled, with a set of four dark, skull-like markings on clavus and corium (Fig. 1A–B); cuneus dark brown, rather strongly deflected at cuneal fracture; membrane dark smoky brown. Coxae and legs dark brown, except for pale metacoxa, all tibiae and tarsi brown. Abdomen unicolorously dark brown. Male genitalia ( Figs. 4– 6 ): Genital segment slender ( Fig. 4 ). Left paramere sensory lobe with a broad basal protuberance ( Fig. 5 ). Phallotheca J-shaped, with smooth apex ( Fig. 4 ). Endosoma long, spiral and subbasally coiled, terminated in an apical, spinulate lobe, with notched apical margin ( Figs. 5 & 6 ). Female genitalia ( Fig. 7 ): Lateral margin of dorsal labiate plate folded; sclerotized rings indistinct.

Measurements. 3/Ƥ: Total body length 3.24/ 3.50; length from apex of clypeus to cuneal fracture 2.54/ 2.88; head width across eyes 0.60/ 0.63; vertex width 0.30/ 0.33; lengths of antennal segment I–IV 0.45, 1.20, 0.90, 0.75/ 0.50, 1.38, 1.08, 0.90; labial length 1.95/ 2.13; basal pronotal width 1.01/ 1.02; width across hemelytron 1.28/ 1.34; and lengths of metafemur, tibia and tarsus 1.20, 1.80, 0.30/ 1.35, 1.95, 0.33.

Etymology. From Greek, kranion (= skull), referring to the peculiar pattern of the hemelytron (as in circled image, Fig. 1B).

Biology. No information is available, as only a pair of adults was collected by a light trap.

Holotype: 3, THAILAND: Nakhon Ratchasima Prov.: SERS, 14˚30'27”N, 101˚55'39”E, 410 m alt., light trap, 30 May 2012, T. Yasunaga (AMNH_PBI 00379613) ( SUT).

Paratype. THAILAND: Nakhon Ratchasima Prov.: 1Ƥ, same data as for holotype, except for date 31 May 2012 (00379614) (TYCN).

Figures

FIGURE 4. Male genital segment (pygophore) and phallotheca of Thai hallodapines named on the figure. Scale bars 0.2 mm.

FIGURE 5. Male genitalia (left paramere and endosoma) of Thai hallodapines named on the figure. Scale bars 0.1 mm.

FIGURE 6. Images of endosoma of Thai hallodapines named on the figure.

FIGURE 7. Images of female bursa copulatrix of Thai hallodapines named on the figure.