Alloiothucha, Drake, 1927

Souma, Jun, Cho, Geonho & Lee, Seunghwan, 2022, Alloiothucha artocarpi (Horváth) (Hemiptera: Heteroptera: Tingidae) found on jackfruit, Artocarpus heterophyllus Lam. (Moraceae): first representative of the genus from Laos, and the synonymy of Cetiothucha Drake & Ruhoff, Zootaxa 5099 (3), pp. 369-381 : 379

Key to the species of Alloiothucha

The key presented below is based on comparisons of the materials examined in the present study with the descriptions, illustrations, and photographs of the six species of Alloiothucha and Cetiothucha ( Horváth 1926; Drake 1927, 1966; Drake & Ruhoff 1965a; Guilbert et al. 2018; United States National Museum of Natural History 2022), and the key of Cetiothucha (Guilbert et al. 2018) .

1 Hood more or less constricted in middle part................................................................ 2

- Hood not constricted in middle part....................................................................... 3

2 Hood gourd-shaped, more constricted in middle part, with dorsal margin sinuate in lateral view; anterior margin of hemelytron strongly curved in basal part.............................................. Alloiothucha artocarpi ( Horváth, 1926)

- Hood nearly semi-ellipsoid, less constricted in middle part, with dorsal margin arched in lateral view; anterior margin of hemelytron weakly curved in basal part.......................................... Alloiothucha necopinata Drake, 1927

3 Costal area of hemelytron with four rows of areolae at widest part..................... Alloiothucha chaera Drake, 1966

- Costal area of hemelytron with three rows of areolae at widest part.............................................. 4

4 Paranotum partially with two rows of areolae and a single row of areolae............................................................................................. Alloiothucha physalia (Drake & Ruhoff, 1965) , comb. nov.

- Paranotum with two rows of areolae throughout its length..................................................... 5

5 Discoidal area of hemelytron with four rows of areolae at widest part............ Alloiothucha philippinensis Drake, 1927

- Discoidal area of hemelytron with five rows of areolae at widest part.................................................................................. Alloiothucha constanti ( Guilbert, Pham & Soulier-Perkins, 2018) , comb. nov.