Adelphocorisella adelphocoroides, Yasunaga & Shishido & Yamada, 2016

Yasunaga, Tomohide, Shishido, Takayuki & Yamada, Kazutaka, 2016, Two new species of the mirine plant bug genus Adelphocorisella (Insecta: Heteroptera: Miridae: Mirinae: Mirini) from central Thailand, Raffles Bulletin of Zoology 64, pp. 250-256 : 255

Adelphocorisella adelphocoroides , new species

( Figs. 1 D−F, 2A, 3)

Type material. Holotype: male, THAILAND: Nakhon Ratchasima, Wang Nam Khieo, Sakaerat Environmental Research Station ( SERS), N14°30’27” E101°55’39”, 410 m alt., UV light trap, coll. T. Yasunaga, TB. Shishido , 25 December 2012 ( AMNH _ PBI 00380437 ) ( DOA).

Diagnosis. Distinguished readily from known congeners by its coffee brown dorsum with very sparsely distributed, reclining, sericeous setae; moderately oblique head; shiny fuscous antennal segment I; long labium reaching abdominal sternum VII; somewhat shiny pronotum; and shape of parameres and endosoma.

Description. Holotype Male: Body elongate oval; dorsal surface generally coffee brown, weakly shining, with uniformly distributed, pale brown, semierect simple setae and very sparsely distributed, reclining sericeous setae ( Fig. 1D ). Head whitish brown ( Fig. 1E ), but chestnut brown ventrally ( Fig. 2A ), oblique, a little porrect; vertex rather wide, about 1.5 times as wide as an eye in dorsal view, with a faint, narrow, longitudinal, mesal sulcus; frons shallowly and obliquely striolate. Antenna longer than body; segment I shiny fuscous, somewhat clavate; segments II−IV completely yellow, linear ( Fig. 2A ). Labium shiny dark brown, long, thick, reaching posterior margin of abdominal sternum VII ( Fig. 2A ). Pronotum somewhat shining, widely pale brown, narrowly darkened posteriorly, with yellowish white collar and posterior margin ( Fig. 1D, F ); pleura widely darkened and pruinosed, with creamy yellow ostiolar peritreme; mesoscutum yellowish brown, matte; scutellum dark brown, matte, with irregular, yellow basal striae; shallowly and roughly rugose ( Fig. 1D ). Hemelytron matte; corium and anterior part of clavus mottled with brown; apical half of cuneus yellowish brown; membrane smoky brown. Coxa generally dark brown, silverily pruinosed, except for metacoxa grayish brown ( Figs 1F , 2A ); leg pale brown; all femora and tibiae with small, brown or reddish brown spots; apical half of metafemur darkened; tibial spines fuscous. Abdomen pale brown; ventral median part irregularly darkened; ventral lateral part mottled with reddish spots ( Fig. 2A ). Male genitalia ( Fig. 3 ): Left paramere with rather developed hypophysis; right paramere slender, tapered apicad. Apex of phallotheca simple, rounded. Endosoma composed of wide membranous area, with well developed spiculum and sclerite ‘b’, and relatively broad sclerite ‘a’. Female: Unknown.

Measurements. Male: Total body length 6.0; width of head across eyes 1.10; width of vertex 0.44; lengths of antennal segments I−IV 0.86, 2.84, 2.23, 1.10; length of labium 3.71; basal width of pronotum 1.84; maximum width across hemelytron 2.16; and length of metafemur, tibia and tarsus 2.70, 4.26, 0.64.

Etymology. From the mirine generic name, Adelphocoris Reuter , with which the new species can be confused.

Biology. Unknown; only a single male was collected using UV light trap.

Figures

Fig. 1. Habitus images of live individuals. A, Adelphocorisella sarika, male from Nakhon Nayok; B, ditto, from Nakhon Ratchasima; C, A. lespedezae, male from Nagasaki, Japan; D−F, A. adelphocoroides, holotype male; G, Adelphocoris triannulatus (Stål), male from Nagasaki; H, ditto, female from Nagasaki.

Fig. 2. Habitus images of dried specimens of Adelphocorisella spp. A, A. adelphocoroides, holotype male; B, A. sarika; C, dittos, lateral view.

Fig. 3. Male genitalia of Adelphocorisella adelphocoroides, holotype.