Dacnulysia chaenomastax, Zhu, Jiachen, Achterberg, Cornelis Van & Chen, Xue-Xin, 2017
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publication ID |
https://doi.org/ 10.11646/zootaxa.4272.3.2 |
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publication LSID |
lsid:zoobank.org:pub:9FBB6A59-8299-495A-9857-004BC1027471 |
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DOI |
https://doi.org/10.5281/zenodo.6038518 |
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persistent identifier |
https://treatment.plazi.org/id/03E8F55A-DC5B-FFAC-FF58-BCC4F9B5FD6E |
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treatment provided by |
Plazi |
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scientific name |
Dacnulysia chaenomastax |
| status |
sp. nov. |
Dacnulysia chaenomastax sp. nov.
Figs 1–3 View FIGURE 1 View FIGURE 2 View FIGURE 3
Type material. Holotype, ♀ ( ZJUH), “ [S. China:] Zhejiang, Mt. Tianmu, 27.?.2011, Zhen Liu ” . Paratype, 1 ♀ ( ZJUH), Zhejiang, Mt. Tianmu , 29.?.1984, Xiaojing Wu.
Diagnosis. Eye in dorsal view 1.1 × as long as temple; third segment (including annellus) 0.96 × as long fourth segment; mandible atypical, with four teeth, middle tooth narrow, acute, much longer than both lateral teeth and with an extra protuberance on third tooth ( Figs 2 View FIGURE 2 L, 3A); notauli complete and crenulate, but widely separate posteriorly ( Fig. 2 View FIGURE 2 D); vein 3-SR of fore wing subequal to 2-SR, m-cu of fore wing interstitial, nearly straight and slightly converging to 1-M posteriorly ( Fig. 2 View FIGURE 2 A); tarsal claws simple ( Fig. 2 View FIGURE 2 N); length of first tergite 2.6 × its apical width, constricted near its basal third, dorsope absent, but position indicated by elongate superficial impressions near constriction ( Fig. 2 View FIGURE 2 F); setose part of ovipositor sheath about 0.1 × as long as fore wing and 0.4 × hind tibia ( Fig. 3 View FIGURE 3 E).
Description. Holotype, ♀, length of body 4.8 mm, of fore wing 4.1 mm.
Head. Square and shiny in dorsal view ( Fig. 2 View FIGURE 2 J), width of head 1.2 × its lateral length, in anterior view subquadrate ( Fig. 2 View FIGURE 2 I), and 1.3 × wider than mesoscutum; antenna incomplete, with 30 remaining segments, bristly setose but basally less bristly, length of third segment (including annellus) 0.96 × as long as fourth segment, length of third and fourth segments 5.0 and 5.2 × their width, respectively ( Fig. 2 View FIGURE 2 M); length of maxillary palp 1.1 × height of head; eye in dorsal view 1.1 × as long as temple ( Fig. 2 View FIGURE 2 I); eye in lateral view 1.05 × higher than wide; frons convex laterally, but distinctly depressed behind antennal sockets; vertex rather convex and dorsally with few punctures ( Fig. 2 View FIGURE 2 J); OOL:diameter of ocellus:POL= 12:5:4; face 1.5 × wider than high, rather evenly convex, with some long setae and coarsely remotely punctate laterally and rugose-punctate medio-ventrally; clypeus semicircular and medium-sized, rather flat, with some punctures ( Fig. 2 View FIGURE 2 H); malar space absent; mandible with 4 teeth, middle tooth narrow, acute and with an extra protuberance on third tooth, with fourth tooth small and lobeshaped ( Figs 2 View FIGURE 2 I, 2L), medial length of mandible 2.6 × its maximum width and mandible ventro-basally protruding beyond base of mandible ( Fig. 2 View FIGURE 2 K).
Mesosoma. Length of mesosoma 2.2 × its height; pronope round and large; side of pronotum distinctly crenulate medio-anteriorly and posteriorly ( Fig. 2 View FIGURE 2 I); mesoscutum with lateral carina in front of tegulae ( Fig. 2 View FIGURE 2 D); epicnemial area crenulate; precoxal sulcus complete, crenulate and transverse; pleural sulcus coarsely crenulate; episternal scrobe medium-sized, round and connected by a furrow to pleural sulcus; metapleuron reticulate-rugose; notauli complete and crenulate, but separated posteriorly, connected by transverse rugae ( Fig. 2 View FIGURE 2 D); mesoscutum glabrous and strongly shiny; scutellar sulcus deep and wide, with one long carina and 2 short ones, sulcus 2.3 × wider than its maximum length; scutellum smooth (except some punctures) and rather flat ( Fig. 2 View FIGURE 2 D); surface of propodeum densely and coarsely reticulate-rugose, areola absent ( Fig. 2 View FIGURE 2 E).
Wings ( Fig. 2 View FIGURE 2 A). r:3-SR:SR1 = 3:16:34; 1-SR+M slightly sinuate; SR1 curved; r 0.3 × width of pterostigma; cu-a postfurcal; 1-CU1:2-CU1 = 1:5; 3-CU1 much shorter than CU1b; 2-SR:3-SR:r-m = 5:5:2; m-cu interstitial, nearly straight and slightly converging to 1-M posteriorly; first subdiscal cell 3.7 × as long as wide; M+CU1 largely unsclerotised. Hind wing: M+CU:1-M:1r-m = 18:35:10; m-cu absent.
Legs. Hind coxa partly punctate, without ventro-basal tubercle; tarsal claws moderately robust, about as long as arolium ( Fig. 2 View FIGURE 2 N); length of femur, tibia and basitarsus of hind leg 4.1, 10.8 and 6.5 × their width, respectively; length of hind tibial spurs 0.15 and 0.08 × its basitarsus; apical appendage of first-fourth hind tarsal segments absent, segments ventrally with dense bristles ( Fig. 2 View FIGURE 2 N).
Metasoma. Length of first tergite 2.6 × its apical width, its dorsal carinae widely separated posteriorly, medially convex ( Fig. 2 View FIGURE 2 E); laterope and dorsope absent, but dorsope indicated as elongate depression ( Fig. 2 View FIGURE 2 F); setose part of ovipositor sheath 0.08 × as long as fore wing (total visible sheath 0.14 ×), flattened and setose basally and 0.4 × as long as hind tibia ( Fig. 3 View FIGURE 3 E).
Colour. Black ( Fig. 1 View FIGURE 1 ); 4 basal segments of antenna brown (but fourth segment apically yellowish); metasoma (except first tergite), hind coxa basally and outer side medially, hind femur dorsally (except basally), apical third of tibia, and tarsus mainly except for third and fourth segments dark brown; mandible partly reddish-brown; remainder of legs and palpi pale yellowish; pterostigma and veins brown; wing membrane slightly infuscated.
Etymology. Named “ chaenomastax ” because of the large open gap between first and second tooth of the mandible: “chaeno” is Greek for “open” and “mastax” is Greek for “jaws”.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.