Xynobius stipitoides Han & van Achterberg, 2024
|
publication ID |
https://dx.doi.org/10.3897/zookeys.1193.115831 |
|
publication LSID |
lsid:zoobank.org:pub:F675478E-363D-4B95-ADFA-06388171FDBA |
|
persistent identifier |
https://treatment.plazi.org/id/D7935E14-BA59-4F89-93F6-419D42EAB220 |
|
taxon LSID |
lsid:zoobank.org:act:D7935E14-BA59-4F89-93F6-419D42EAB220 |
|
treatment provided by |
|
|
scientific name |
Xynobius stipitoides Han & van Achterberg |
| status |
sp. nov. |
Xynobius stipitoides Han & van Achterberg sp. nov.
Figs 42 View Figure 42 , 43-53 View Figures 43–53
Type material.
Holotype. ♀ (KSNU), "South Korea: Forahn house, Ongpo-ri, Hallim, Jeju, Jeju Island, 33°12'51.1"N, 126°15'04.0"E, 16.v.2019, SW [= collected by sweeping], Hyojoong Kim leg., KSNU".
Diagnosis.
Pterostigma slightly widened apically (Fig. 43 View Figures 43–53 ); maxillary palp 1.5 × longer than height of head; notauli present up to middle of mesoscutum and narrowly crenulate, mesoscutum medio-posteriorly and scutellum punctate (Fig. 45 View Figures 43–53 ); precoxal sulcus oblique and moderately crenulate medially (Fig. 44 View Figures 43–53 ); vein SR1 of fore wing 2.7 × as long as vein 3-SR; first tergite subparallel-sided and nearly twice longer than its apical width (Fig. 51 View Figures 43–53 ); second tergite shiny and smooth (Fig. 46 View Figures 43–53 ); setose part of ovipositor sheath slightly shorter than first tergite (Fig. 52 View Figures 43–53 ); hind tibia (except ivory base) and tarsus dark brown.
Description.
Female; length of body 5.9 mm, of fore wing 4.6 mm.
Head. Antenna with 48 segments and 1.2 × as long as body; third segment 3.5 × longer than its width and 0.9 × as long as fourth segment (Fig. 52 View Figures 43–53 ); eye 1.7 × longer than temple in dorsal view (Fig. 48 View Figures 43–53 ); temple smooth and moderately setose; vertex, stemmaticum and frons shiny and smooth; face densely punctate and setose but granulate dorso-laterally; median keel present on face (Fig. 47 View Figures 43–53 ); width of clypeus 1.9 × its maximum height; clypeus punctate and protruding anteriorly in lateral view (Figs 42 View Figure 42 , 49 View Figures 43–53 ); ventral margin of clypeus above upper level of condyli of mandibles and densely setose; hypoclypeal depression rather deep (Fig. 47 View Figures 43–53 ); maxillary palp 1.5 × longer than height of head; malar sulcus rather deep and curved anteriorly in lateral view (Figs 42 View Figure 42 , 49 View Figures 43–53 ); occipital carina protruding dorsally in lateral view; interrupted dorso-medially (Fig. 48 View Figures 43–53 ); mandible twisted and triangular in lateral view and gradually widened basally (Fig. 49 View Figures 43–53 ).
Mesosoma. Mesosoma 1.4 × longer than its height (Fig. 44 View Figures 43–53 ); pronope absent (Figs 45 View Figures 43–53 , 48 View Figures 43–53 ); propleuron flange largely smooth and protruding posteriorly with oblique carina (Fig. 44 View Figures 43–53 ); mesopleuron largely shiny and smooth, but precoxal sulcus oblique and moderately crenulate medially; epicnemial area crenulate ventrally, remaining area smooth; pronotal side largely smooth except crenulated groove anteriorly and ventrally; mesopleural sulcus crenulate and narrowed dorsally; anterior groove of metapleuron narrow and crenulate; metapleuron flange distinctly protruding ventrally (Fig. 44 View Figures 43–53 ); metapleuron reticulate-rugose and moderately setose posteriorly and remainder of metapleuron smooth; notauli present anteriorly up to middle of mesoscutum and narrowly crenulate, medio-posteriorly mesoscutum densely punctate and with setae (Fig. 45 View Figures 43–53 ); medio-posterior depression of mesoscutum sublinear, shallow and surroundings distinctly punctate; scutellar sulcus wide, distinctly and densely crenulate; scutellum sparsely punctate and setose medially, posteriorly densely punctate and rather flat in lateral view; propodeum shiny and densely setose medially with long medio-longitudinal carina and indistinctly transverse carina medially (together cross-shaped) and remaining area mainly coarsely rugose (Figs 45 View Figures 43–53 , 50 View Figures 43–53 ).
Wings. Fore wing (Fig. 43 View Figures 43–53 ): pterostigma narrow, elongated, sublinear and slightly widened apically, ending after level of vein r-m (Fig. 43 View Figures 43–53 ); vein r 0.4 × longer than vein 2-SR; vein 1-SR+M sinuate; vein 3-SR angled with vein r, parallel with vein 2-M and 1.5 × longer than vein 2-SR; vein 2-SR slightly curved upward; vein SR1 curved upward, 2.5 × longer than vein 3-SR; vein 1-M straight; first subdiscal cell rather transverse; r: 3-SR: SR1 = 5: 16: 42; vein m-cu distinctly postfurcal; vein CU1b completely present. Hind wing: vein m-cu absent; vein 1r-m 0.6 × as long as vein 1-M; vein 2-M incompletely pigmented.
Legs. Hind femur 4.7 × longer than its maximum width (Fig. 53 View Figures 43–53 ); hind leg long and densely setose.
Metasoma. Length of first metasomal tergite ~ 2.0 × its apical width (Fig. 51 View Figures 43–53 ); first tergite slightly widened medially and parallel-sided posteriorly, setose, dorsal carinae converging to short medio-longitudinal carina at basal third and remaining area reticulate-rugose; dorsope distinct (Figs 45 View Figures 43–53 , 46 View Figures 43–53 , 50 View Figures 43–53 , 51 View Figures 43–53 ); second metasomal suture absent dorsally (Fig. 46 View Figures 43–53 ); second tergite shiny and smooth with a pair of impressions anteriorly; following tergites shiny, smooth and moderately setose posteriorly; setose part of ovipositor sheath 0.8 × and 0.1 × as long as first tergite and fore wing, respectively (Figs 42 View Figure 42 , 52 View Figures 43–53 , 43 View Figures 43–53 ).
Colour. Body generally black; antenna, ovipositor sheath, and tibia, tarsus, and femur of hind leg dark brown (Figs 52 View Figures 43–53 , 53 View Figures 43–53 ); antennal sockets, ventral margin of clypeus, mandibles, and legs (Figs 52 View Figures 43–53 , 53 View Figures 43–53 ; except hind tibia and tarsus) brownish yellow; palpi and tegulae pale yellowish; ovipositor, narrowed band on third-sixth tergites posteriorly and spot of second tergite latero-posteriorly, yellowish brown (Fig. 46 View Figures 43–53 ); pterostigma and veins of wings greyish brown.
Distribution.
South Korea
Biology.
Unknown.
Etymology.
Name is a combination of the specific name stipitatus and oides (Latin for resembling) because the new species is similar to Opius stipitatus Tobias.
Remarks.
This species has a distinct dorsope, ventral margin of clypeus above upper level of mandibular condyles and a large hypoclypeal depression; therefore, it belongs to the genus Xynobius . It has a curved malar suture in lateral view, reduced notauli (narrowly crenulated anteriorly and absent on posterior half of mesoscutal disc), largely shiny and smooth mesoscutum except some punctures anteriorly and around medio-posterior depression, elliptical depression medio-posteriorly on middle lobe of mesoscutum, a long medio-longitudinal carina with indistinct transverse carina on propodeum, and hind leg with long, evenly and conspicuous setae. In the key by Tobias (1998), it runs to Opius (Xynobius) stipitatus Tobias, 1998 (Figs 65-75 View Figures 65–75 ), by having the scutellum sculptured, the mesoscutum largely smooth and the pterostigma more or less widened apically. However, it differs by having the narrowly crenulated notauli up to middle of mesoscutum (notauli absent on mesoscutal disc in O. (X.) stipitatus , except for shallow depressions at imaginary notaulic courses), middle lobe of mesoscutum shallowly punctate and densely setose medio-posteriorly (smooth and glabrous), precoxal sulcus crenulated (precoxal sulcus smooth), groove on pronotal side narrowly crenulated and without setae ventrally (crenulated groove rather wide and densely setose ventrally), propodeum with long medio-longitudinal carina and indistinct transverse carina medially (with short medio-longitudinal carina, coarse transverse carinae and indistinct areola), length of first metasomal tergite ~ 2.0 × its apical width (1.3 × longer than its apical width), dorsal carinae forming a short medio-longitudinal carina on first tergite (longitudinal carinae remain separated), and third-sixth tergites with distinct brown band posteriorly (only third tergite with obsolescent brown band posteriorly). Among the Chinese species it shares the shape of the pterostigma, the setose and punctate medio-posterior area of the mesoscutum, the antenna of ♀ with ~ 48 segments, and the largely punctate face (except for the smooth medial ridge) with Xynobius rugosulcus (Wu & Chen, 2005), comb. nov. (it was described as Eurytenes rugosulcus but it lacks the typical derived venation of Eurytenes s. str.). The new species differs by having the posterior half of the notauli reduced (notauli nearly complete in Xynobius rugosulcus ), middle lobe of mesoscutum shallowly punctate and densely setose medio-posteriorly (with a pair of grooves parallel to notauli), scutellum punctate medially (scutellum smooth medially), face coarsely and more densely punctate submedially (finer and sparsely punctate submedially), precoxal sulcus distinctly crenulated (precoxal sulcus slightly punctate), propodeum with long medio-longitudinal carina and indistinct transverse carina medially (with coarse transverse carinae and areola, and without medio-longitudinal carina), vein m-cu of hind wing absent (vein m-cu of hind wing as an unpigmented fold), and length of first metasomal tergite 1.9 × its apical width (1.6 × longer than its apical width).
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.