Dacnusa (Pachysema) reno, Papp, 2007

Papp, J., 2007, Braconidae (Hymenoptera) From Korea Xxii. Subfamily Alysiinae, Acta Zoologica Academiae Scientiarum Hungaricae 53 (1), pp. 1-38 : 30-33

publication ID	https://doi.org/ 10.5281/zenodo.5731826
DOI	https://doi.org/10.5281/zenodo.6915514
persistent identifier	https://treatment.plazi.org/id/03C00E24-5643-E56B-C426-F1B165E3FC75
treatment provided by	Felipe
scientific name	Dacnusa (Pachysema) reno
status	sp. nov.

Treatment

Dacnusa (Pachysema) reno View in CoL sp. n. ♀

( Figs 100–106 View Figs 100–111 )

Material examined (2 ♀). – Female holotype: Korea, Kangwon, Mt. Solak Paekdansa, 25 May 1993, leg. D.-S. KU . – Female paratype: Korea, Kangwon , Kosong Kansong, Konbongsa, 26 May 1993, leg. D.-S. KU .

Holotype is deposited in the Coll. KU ( Sancheong , Republic of Korea), paratype is in the Hungarian Natural History Museum (Department of Zoology), Budapest, Hym. Typ. No. 10975.

Holotype and paratype are in good conditon, both specimens glued on a pointed card by its right mesopleuron (holotype) and its coxae 2–3 (paratype).

Etymology. – The species name “reno” is a phantasy name.

Description of the female holotype. – Body 2.1mm long. Antenna as long as body and with 24 antennomeres. First flagellomere 4.6 times, second flagellomere 4 times, middle flagellomeres 2.7–2.5 times and penultimate flagellomere twice as long as broad. First flagellomere 1.15 times as long as second flagellomere. – Head in dorsal view ( Fig. 100 View Figs 100–111 ) transverse, 1.9 times as broad as long, eye 1.4 times length of temple, occiput excavated. Ocelli small, elliptic, OOL almost three times as long as POL. Eye in lateral view twice as high as wide, temple a bit wider than eye ( Fig. 101 View Figs 100–111 , see arrows). Mandible broadening distally, somewhat longer than broad between upper and lower teeth, middle tooth pointed ( Fig. 102 View Figs 100–111 ). Face almost twice as wide as high, laterally hairy, head otherwise polished and bare.

Mesosoma in lateral view 1.2 times as long as high. Pronope small and round, less deep. Mesoscutum almost evenly hairy; notaulix faintly distinct on fore declivous part of mesoscutum; mesoscutal dimple deep linearform. Precoxal suture finely crenulate and reaching epicnemial suture. Propodeum rugulose and densely hairy. – Hind femur 4.6 times as long as broad distally ( Fig. 103 View Figs 100–111 ). Hind tibia and tarsus equal in length. Hind basitarsus as long as tarsomeres 2–3 + half of fourth tarsomere combined.

Fore wing one-sixth longer than body. Pterostigma ( Fig. 104 View Figs 100–111 ) cuneiform, parallel-sided and fairly wide, nine times as long as wide, issuing r near from its base, r almost twice as long as width of pterostigma and longer than 2–SR ( Fig. 104 View Figs 100–111 , see left pair of arrows); 3–SR + SR1 bent and ending far before tip of wing (see right horizontal arrow in Fig. 104 View Figs 100–111 ); 1–R1 just less than half as long as pterostigma. Vein m–cu antfurcal. Outer-lower side of first subdiscal cell closed, i.e. veins 3–CU1+ CU1b present ( Fig. 105 View Figs 100–111 , see arrows). – Hind wing: cu–a issuing distally from M–CU + 1–M.

Firs tergite ( Fig. 106 View Figs 100–111 ) strongly broadening posteriorly, 1.2 times as long as broad behind, basal and converging pair of keels distinct and reaching middle of tergite, dorsope and laterope present, tergite evenly and densely rugulose, hairy. Further tergites transverse, second tergite somewhat longer than third tergite, border between them distinct ( Fig. 106 View Figs 100–111 ). Hypopygium fairly large, pointed; ovipositor sheath short, as long as hind tarsomeres 3–4 combined.

Antenna bicolourous, scape and pedicel yellow, flagellum ventrally (or anteriorly) yellow and dorsally (or posteriorly) brownish. Head black with weak rusty tint. Mesosoma and first tergite black. Metasoma brown to dark brown. Legs bright yellow.Wings subhyaline, pterostigma and veins light brown.

Description of the female paratype. – Similar to the female holotype. Body 2.1 mm long. Antenna with 25 antennomeres. Head in dorsal view 1.9 times as broad as long. First tergite slightly more broadening posteriorly, i.e. 1.1 times as long as broad behind.

Male and host unknown.

Distribution: Korea.

With the help of TOBIAS’ s key (1998: 324–354) to the Dacnusa species of Far East of Asiatic Russia the new species, D. (P.) reno , runs to D. (P.) sublaeta TOBIAS and the two species are distinguished by the features keyed:

1 (2) Female: Eye in dorsal view as long as temple. First tergite less broadening posteriorly, 1.5 times as long as broad behind, unevenly rugose. Vein r as long as width of pterostigma. Mesoscutum anteriorly and between notauli hairy, laterally bare. Hind tibia somewhat longer than hind tarsus. Hind femur 5.5 times as long as broad distally. Flagellum dark coloured. Legs brownish yellow; coxae, hind tibia apically and hind tarsus entirely brownish. ♀: 1.7 mm. – Asiatic Russia (Maritime Territory, Sakhalin, Kuril Islands) D. (P.) sublaeta TOBIAS, 1998

2 (1) Female: Eye in dorsal view 1.4 times as long as temple ( Fig. 100 View Figs 100–111 ). First tergite more broadening posteriorly, 1.1–1.2 times as long as broad behind, evenly rugulose ( Fig. 106 View Figs 100–111 ). Vein r longer than width of pterostigma ( Fig. 104 View Figs 100–111 ). Mesoscutum almost entireley and evenly hairy. Hind tibia and tarsus equal in length. Hind femur 4.6 times as long as broad distally ( Fig. 103 View Figs 100–111 ). Flagellum bicolorous: ventrally yellow and dorsally brownish. Legs bright yellow. ♀: 2.1 mm. – Korea D. (P.) reno sp. n.

The new species is nearest to D. (P.) laeta NIXON considering their common features as presence of precoxal suture, short marginale (or radial) cell and antefurcal recurrent vein (m–cu) ( NIXON 1948: 221); the discrimination of the two species is presented subsequently:

1 (2) Female: First tergite less broadening posteriorly, 1.4 times length of hind breadth ( Fig. 107 View Figs 100–111 ). Mandible broadening, middle tooth slightly more pointed ( Fig. 108 View Figs 100–111 ). Vein r as long as 2–SR, r a bit longer than width of pterostigma ( Fig. 109 View Figs 100–111 , see arrows). Mesoscutum hairy anteriorly. Flagellum unicolorous greyish brownish except bright yellow first flagellomere. ♀: 2–2.4 mm. – Ireland, Germany, Austria, Poland, Hungary D. (P.) laeta NIXON, 1954 View in CoL

2 (1) Female: First tergite more broadening posteriorly, 1.2 times as long as broad behind ( Fig. 106 View Figs 100–111 ). Mandible a bit more broadening, middle tooth slightly less pointed ( Fig. 102 View Figs 100–111 ). Vein r longer than 2–SR, r nearly twice longer than width of pterostigma ( Fig. 104 View Figs 100–111 , see pair of arrows). Mesoscutum almost entirely and evenly hairy. Flagellum bicolorous, ventrally (or anteriorly) yellow and dorsally (or posteriorly) brownish. ♀: 2.1 mm. – Korea D. (P.) reno View in CoL sp. n.

The new species is reminding of D. (D.) faeroeensis (ROMAN) View in CoL considering their strongly broadening first tergite and hairy propodeum + first tergite, however, they are distinguished by the features as follows:

1 (2) Temple in dorsal view bulged, i.e. head in dorsal view somewhat broader be- tween temples than between eyes ( Fig. 110 View Figs 100–111 ). 2–SR longer than r, marginal cell ending somewhat less far from tip of wing ( Fig. 111 View Figs 100–111 , see arrows). An- tenna with 21–23 antennomeres. Hind coxa, at most basally, blackish to black. ♀: 2–2.1 mm. – Palaearctic Region D. (D.) faeroeensis (ROMAN, 1917)

2 (1) Temple in dorsal view not bulged, i.e. head in dorsal view evenly broad be- tween eyes and temples ( Fig. 100 View Figs 100–111 ). 2–SR shorter than r, marginal cell ending far from tip of wing ( Fig. 104 View Figs 100–111 , see arrows). Antenna with 24–25 antennomeres. Hind coxa brigth yellow. ♀: 2.1 mm. – Korea D. (P.) reno sp. n.