Physatocheila, Fieber, 1844

Souma, Jun, 2019, Physatocheila nigrintegerrima sp. nov. from Japan: a first fruit-feeder of the genus (Hemiptera: Heteroptera: Tingidae), Zootaxa 4638 (2), pp. 264-272 : 270

Key to the species of Physatocheila occurring in Japan

1 Paranotum completely covering pronotal disk in anterior part, touching median carina of pronotum, bulged upward, forming a cyst; subcostal area of hemelytron subvertical...................................... P. fieberi (Scott, 1874) ( Fig. 5B )

- Paranotum incompletely covering pronotal disk in anterior part, not touching median carina of pronotum, not bulged upward, not forming a cyst; subcostal area of hemelytron subhorizontal................................................. 2

2 Lateral carinae of pronotum close to each other in anterior part; each paranotum widened posteriorly; outer margin of paranotum gently curved outward throughout its length............................................................. 3

- Lateral carinae of pronotum nearly parallel to each other throughout their length; each paranotum not widened posteriorly; outer margin of paranotum nearly straight throughout its length................................................. 4

3 General color black; median spine on head reaching level far remote from bases of frontal spines; rostrum reaching anterior part of metasternum; costal area of hemelytron slightly narrower than subcostal area at widest part of each; collected from Hovenia dulcis (Rhamnaceae) ................................................... P. nigrintegerrima sp. nov. ( Fig. 1 A–D)

- General color brown; median spine on head reaching beyond bases of frontal spines; rostrum reaching posterior margin of abdominal sternite II; costal area of hemelytron wider than subcostal area at widest part of each; collected from Salix spp. ( Salicaceae )......................................................... P. distinguenda ( Jakovlev, 1880) ( Fig. 5A )

4 Body approximately 4.2 mm long from head to apex of hemelytron; costal area of hemelytron with 3 rows of areolae in basal part, 4–5 rows in middle part and 2 rows in apical part.............................. P. orientis Drake, 1942 ( Fig. 5D )

- Body approximately 3.2 mm long from head to apex of hemelytron; costal area of hemelytron with 2 rows of areolae throughout its length............................................................................................ 5

5 Hood roof-shaped; lateral carinae of pronotum touching outer margin of paranotum at anterior end; subcostal area of hemelytron with 3 rows of areolae at widest part................................... P. miyatakei Miyamoto, 1964 ( Fig. 5C )

- Hood low-dome-shaped; lateral carinae of pronotum not touching outer margin of paranotum at anterior end; subcostal area of hemelytron with 4 rows of areolae at widest part................................... P. veteris Drake, 1942 ( Fig. 5E )

Figures

FIGURE 1.A–D. Habitus images of dried specimens of Physatocheila nigrintegerrima sp. nov., dorsal and lateral views: macropterous male from Niigata, Honshu, Japan (A–B) and macropterous female from Iwate, Honshu, Japan (C–D). Scale bar: 1.0 mm.

FIGURE 5. A–E. Five Physatocheila species from Japan: P. distinguenda (A); P. fieberi (B); P. miyatakei (C); P. orientis (D); P. veteris (E). Scale bar: 1.0 mm.