Futasujinus Ishihara, 1953

Genus Futasujinus Ishihara, 1953 View in CoL

Futasujinus Ishihara, 1953: 47 View in CoL .

Type species: Deltocephalus candidus Matsumura, 1914 View in CoL

Description. For genus description, see Zhang et al., (2014).

Diagnosis. General coloration yellow to ocherous with two stripes on vertex extended to pronotum and lateral margins of pronotum with two additional stripes. Male pygofer lobe with elongate posteroventral process directed mesad. Subgenital plate gradually tapered with apex and lateral margin rounded, lateral margin with one row of macrosetae. Connective loop shaped with stem very short. Aedeagus robust with two pairs of processes, apical and subapical.

Distribution. China, Japan, Korea, Mongolia, Russia.

Key to species of the Futasujinus Ishihara View in CoL (males) (modified from Zhang et al., 2014)

1. Ventral processes of pygofer short and width of aedeagal subapical processes wider than apical processes............... 2

- Ventral processes of pygofer long and width of aedeagal subapical processes same as or narrower than apical processes.... 5

2. Ventral process of pygofer straight....................................................................... 3

- Ventral process of pygofer curved posterad, arcuate.......................................................... 4

3. Caudal processes of pygofer short; crossed near apex...................................... F. amuriensis (Metcalf) View in CoL

– Caudal processes of pygofer long; crossed in middle and extended to opposite lobes............ F. koreacola Kwon & Lee View in CoL

4. Aedeagal apical processes gradually curved anteriorly........................................ F. biarmatus Dlabola View in CoL

– Aedeagal apical processes straight, directed laterally.................................... F. towadensis (Matsumura) View in CoL

5. Aedeagal subapical process well developed, flag-like........................................................ 6

– Aedeagal subapical process weakly developed, obscure...................................................... 8

6. Caudal margin of pygofer lobes truncated; aedeagal apical processes narrow...................................... 7

– Caudal margin of pygofer lobes rounded; aedeagal apical processes broad............... F. hastatus Zhang, Dai & Zhang

7. Apical processes of aedeagus acute................................................... F. candidus (Matsumura) View in CoL

– Apical processes of aedeagus truncate.......................................... F. truncates Zhang, Dai & Zhang

8. Pygofer lobes as long as height; aedeagal shaft and subapical processes................. F. dietrichi Zhang, Dai & Zhang View in CoL

– Pygofer lobes about 1.5 times longer than height; aedeagal shaft slender in caudal and lateral view....... F. brevis sp. nov.