Monoblastus, Hartig, 1837

Kasparyan, Dmitri R., Choi, Jin-Kyung, Kang, Gyu-Won & Lee, Jong-Wook, 2018, A new species of Monoblastus Hartig, 1837 (Hymenoptera: Ichneumonidae: Tryphoninae) from South Korea, Zootaxa 4472 (2), pp. 393-400 : 398-399

Key to species of Monoblastus occurring in South Korea

1. Hind tibia light yellow with blackish base and apex ( Fig. 5 ). Antenna with about 40 flagellomeres. Metasomal tergites black with hind margin narrowly reddish. Nervellus intercepted above or near the middle. Fore and mid coxae and all trochanters blackish brown. Metasoma black......................................................... M. clauseni (Uchida)

- Hind tibia colouration not as above; if yellow then darkened only at apex ( Figs 3, 4, 6 ). Antenna with about 20–33 flagellomeres. Nervellus intercepted below the middle. Fore and mid femora reddish yellow, all trochanters and trochantelli and hind tibia (except for blackish apex) light yellow................................................................. 2

2. Apical tergites of metasoma completely ochreus-red, tergites 1–3(4) black ( Fig. 6 ). Fore and mid femora posteriorly with blackish markings. Oral carina high and short; occipital carina joining oral carina close to mandible. Mandible with blackish basal spot....................................................................... M. erythrurus Townes et al.

- Apical tergites of metasoma brown or black. Fore and mid femora completely yellowish, without posterior dark markings. Oral carina slightly higher than occipital carina, joining it at distance equal to 0.4–0.5× basal mandibular width. Mandible yellow, without blackish basal spot.............................................................................. 3 3. Tergites 2–3 predominantly reddish in female ( Fig. 1 ) and predominantly blackish with reddish pattern at base and apex in male ( Fig. 2 ). Tarsal claws simple, not pectinate. Head with dense and distinct but not coarse punctures, with about 9–12 punctures on a line between eye and lateral ocellus ( Fig. 12 ); this line 1.6–1.8× as long as diameter of lateral ocellus................................................................................................ M. koreensis sp. nov.

- All tergites black in both sexes ( Fig. 3 ). Tarsal claws with 3–4 strong teeth ( Fig. 9 ). Head with dense and coarse punctures ( Figs 3 , 7 ), with about 5 punctures on a line between eye and lateral ocellus ( Fig. 7 ); this line 1.0–1.2× as long as diameter of lateral ocellus..................................................................... M. nigriventus Lee & Cha

Figures

FIGURES 3–6. Monoblastus spp.: 3—M. nigriventus, holotype, ♂; 4—M. koreensis sp. nov., paratype, ♀; 5—M. clauseni, ♀; 6—M. erythrurus, ♂. 3, 4, 6—habitus, lateral; 5—metasoma and hind leg, lateral.

FIGURES 1–2. Monoblastus koreensis sp. nov., habitus, lateral: 1—holotype, ♀; 2 –paratype, ♂.

FIGURES 11–14. Monoblastus, head, dorsal (11, 12) and front (13, 14) view: 11, 13—M. nigriventus, ♂; 12—M. koreensis sp. nov., ♀; 14—M. ermolenkoi, ♀.

FIGURES 7–10. Monoblastus nigriventus, holotype, ♂: 7—head, dorsal; 8—head and fore leg, anterior; 9—claw of fore tarsus; 10—base of metasoma, dorsal.