Micronecta (Micronecta) poweri ( Douglas & Scott, 1869 )

Rajabian, Mona & Hosseini, Reza, 2023, The Micronecta Kirkaldy, 1897 (Hemiptera: Heteroptera: Micronectidae) of Iran, with four new records and an illustrated key to the species, Zootaxa 5330 (4), pp. 492-508 : 502

Micronecta (Micronecta) poweri ( Douglas & Scott, 1869)

( Figs. 10 , 11E )

Sigara poweri Douglas & Scott, 1869 ; Sigara foveifrons Thomson, 1871 ; Sigara distans Rey, 1890 ; Sigara vitticeps Horváth, 1895 ; Micronecta borealis Lundblad, 1936 ; Micronecta macrothoracica Jordan, 1943 ; Micronecta cornuta Wagner, 1952 .

Material examined: Iran, Guilan Province: Talesh (37°48′39′′N 48°49′25′′E), stream in the Kasmeh Jan, 1♁, sweeping, 12.VII.2021 .

Diagnosis: Body oval and narrowed toward posterior half; hemelytron greyish, with dark-brown markings, dark spots in middle of corium fused into a transverse zigzag band; frons and vertex light-brown; vertex of head rounded to slightly conical; eyes silvery-black; pronotum greyish-brown, with a pair of brown marks and with expanded pale apical band spanning width; pronotum wider than head, longer than median head length ( Fig. 10A ). Metaxyphus narrow, long and triangular, with apex broadly rounded.

Male: pala with three long setae dorsally; ventrally, palmar area with single short, thickened seta dorsally and several scattered setae in the middle, ca. 20 setae each in mesial row and lateral rows, lateral row setae more pronounced than those of mesial row; palar claw broadened distally, apex rounded ( Fig. 11E ). Median lobe of sternum VII short and almost wider than its length, with five or six long setae; apex rounded ( Fig. 10B ). Strigil present. Prestrigilar flap on segment V (as in Fig. 10C ). Free lobe of tergum VIII expanded posteriorly, mesial angle rounded with ca. 10 short setae distributed submarginally, lateral angle slightly produced with ca. 15 long setae ( Fig. 10D ). Left paramere: shaft broad, flat, abruptly tapering towards rounded apex, with a small process distally which may sometimes protrude laterally; basal lobe long, tongue-shaped ( Fig. 10E ). Right paramere: shaft broadly rectangular and stout, constricted near base, expanded distally, with a rounded apex; base with a distinct hump on mesial side ( Fig. 10F ).

Figures

FIGURE 10. Habitus and morphological features of Micronecta poweri (Douglas & Scott, 1869), male, A. dorsal view, B. median lobe of sternum VII, C. prestrigilar flap, D. free lobe of tergum VIII, E. left paramere, F. right paramere. Scale for A= 0.5 mm, B–F= 0.1 mm.

FIGURE 11. Male palae of species of Micronecta, A. M. pusilla, B. M. anatolica, C. M. carpatica, D. M. griseola, E. M. poweri. Scale= 0.1 mm.