Dacnusa (Pachysema) luctuosa, Papp, 2007
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publication ID |
https://doi.org/ 10.5281/zenodo.5731826 |
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DOI |
https://doi.org/10.5281/zenodo.6915512 |
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persistent identifier |
https://treatment.plazi.org/id/03C00E24-5644-E556-C43E-F41865E3FCB3 |
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treatment provided by |
Felipe |
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scientific name |
Dacnusa (Pachysema) luctuosa |
| status |
sp. nov. |
Dacnusa (Pachysema) luctuosa View in CoL sp. n. ♂
( Figs 88–95 View Figs 88–99 )
Material examined (1 ♂). – Male holotype: Korea, prov. Ryang-gang , Chann-Pay plateau, 24 km NW from Sam-zi-yan, swept along the road to Mt. Pektu, 2000 m, 24 July 1975, leg. J. PAPP et A. VOJNITS (loc. no. 281). – Holotype is deposited in the Hungarian Natural History Museum (Depart-
ment of Zoology), Budapest, Hym. Typ. No. 10974. Holotype is in good condition, right antenna apically damaged: with 19 antennomeres.
Etymology. – The species name “luctuosa” refers to the dark coloured body.
Description of the male holotype. – Body 1.8 mm long. Antenna as long as body and with 22 antennomeres. First flagellomere twice, second flagellomere 1.8 times, middle flagellomeres also 1.8 times and penultimate flagellomere 1.6 times as long as broad. First flagellomere hardly 1.2 times longer than second flagellomere. – Head in dorsal view ( Fig. 88 View Figs 88–99 ) transverse, 1.8 times as broad as long, temple slightly bulged: head between temples slightly broader than between eyes, eye 1.35 times as long as temple, temple rounded, occiput excavated. Ocelli small, elliptic, fairly far from each other, OOL one-third longer than POL. Eye in lateral view 1.6 times as high as wide, temple as wide as eye ( Fig. 89 View Figs 88–99 , see arrows). Mandible 1.3 times as long below as broad between upper and lower teeth, middle tooth less pointed ( Fig. 90 View Figs 88–99 ). Face 1.5 times as wide below as high, inner margin of eyes somewhat diverging ventrally. Head polished; face laterally, clypeus and hind part of gena (above mandible) hairy, occiput with disperse hairs.
Mesosoma in lateral view 1.4 times as long as high. Notaulix extended hardly to fore third of mesoscutum, evenly deep and subcrenulate. Pronope distinct. Mesoscutum polished, hairy on its declivous fore part; notaulix indicated by a few hairs; mesoscutal dimple fairly large, round, deep.
Mesopleuron also polished, precoxal suture wide, not reaching fore margin of mesopleuron, rugulose ( Fig. 91 View Figs 88–99 ). Propodeum and metapleuron above and below densely rugulose with rugose element, metapleuron medially polished; propodeum and metapleuron less hairy. – Hind femur 4.1 times as long as broad distally, its outer side with disperse hairpunctures ( Fig. 92 View Figs 88–99 ). Hind tibia as long as hind tarsus; hind basitarsus as long as tarsomeres 2–4 combined.
Fore wing somewhat longer than body. Pterostigma ( Fig. 93 View Figs 88–99 ) cuneiform, parallel-sided and nearly 13 times as long as wide, issuing r near from its base, r slightly longer than width of pterostigma, 2–SR 2.8 times length of r; 3–SR + SR1 bent and ending far before tip of wing; 1–R1 0.6 times as long as pterostigma. Vein m–cu clearly antefurcal ( Fig. 93 View Figs 88–99 ). Outer-lower side of subdiscal cell closed, i.e. veins 3CU1 + CU1b present, CU1a issuing clearly posteriorly ( Fig. 94 View Figs 88–99 , see arrows).
First tergite ( Fig. 95 View Figs 88–99 ) evenly broadening posterioly, 1.4 times as long as broad behind, pair of spiracles at middle of tergite, pair of less converging and less distinct keels merging medially into rugo-rugulosity. Tergites 2–3 fused and as long as first tergite, together with further tergites polished.
A dark coloured species. Scape and pedicel black with weak rusty tint; flagellum blackish. Head, mesosoma and first tergite black, metasoma dark brown. Mandible brownish yellow, oral parts pale yellow. Tegula dark brown, parategula brown. Coxae dark brown, trochanters yellow, fore femur basally, femora 2–3 entirely brown, tibiae 2–3 distally and tarsi 1–3 brown to light brown, rest of legs yellow to yellowish. Wings hyaline, pterostigma and veins brownish.
Female and host unknown.
Distribution: Korea.
The new species, Dacnusa (Pachysema) luctuosa , runs to D. (P.) arkadii TOBIAS with the help of TOBIAS’ s key (1998: 324–354): mesoscutum less hairy, precoxal suture distinct, notaulix present on fore third of mesoscutum; however, the two species are separated clearly by the features keyed:
1 (2) Temple in dorsal view not bulged, i.e. head between temples and eyes equally broad; head twice as broad as long ( Fig. 96 View Figs 88–99 ). Vein r 2.8 times as long as width of pterostigma, 2–SR 0.7 times length of r ( Fig. 97 View Figs 88–99 ). Hind tibia longer than tarsus. Precoxal suture finely crenulate ( Fig. 98 View Figs 88–99 ). Antenna with 26–28 antennomeres, middle flagellomeres 2.2–2.3 times as long as broad. First tergite somewhat broader in general, 1.25 times as long as broad behind, finely sculptured ( Fig. 99 View Figs 88–99 ). Legs yellow or brownish. ♂: 1.7–2.2 mm. – Asiatic Russia (Kuril Islands) D. (P.) arkadii TOBIAS, 1997 View in CoL
2 (1) Temple in dorsal view bulged, i.e. head between temples slightly broader than between eyes; head 1.8 times as broad as long ( Fig. 88 View Figs 88–99 ). Vein r a bit longer than width of pterostigma, 2–SR 2.8 times length of r ( Fig. 93 View Figs 88–99 ). Hind tibia and tarsus equal in length. Precoxal suture rugulose ( Fig. 91 View Figs 88–99 ). Antenna with 22 antennomeres, middle flagellomeres 1.9–1.8 times as long as broad. First tergite somewhat less broad in general, 1.35 times as long as broad behind, rugo-rugulose ( Fig. 95 View Figs 88–99 ). Legs dark brown to brown with less yellow pattern. ♂: 1.8 mm. – Korea D. (P.) luctuosa View in CoL sp. n. The new species is related to D. (P.) fraterna TOBIAS View in CoL considering their similar features like D. (P.) arkadii View in CoL , the two species are discriminated as follows:
1 (2) Hind tarsus shorter than hind tibia. Temple in dorsal view not bulged, i.e. head between eyes and temples equally broad. Antenna with more than 25 antennomeres (quotation after TOBIAS 1998: 341). Middle tooth of mandible pointed. Legs brownish yellow. ♂: 1.7 mm. – Asiatic Russia (Maritime Territory) D. (P.) fraterna TOBIAS, 1998 View in CoL
2 (1) Hind tarsus and tibia of equal length. Temple in dorsal view slightly bulged, i.e. head between temples slightly broader than between eyes ( Fig. 88 View Figs 88–99 ). An- tenna with 22 antennomeres. Middle tooth of mandible less pointed ( Fig. 90 View Figs 88–99 ). Legs dark brown to brown with less yellow pattern. ♂: 1.8 mm. – Korea D. (P.) luctuosa sp. n.
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