Symmorphus tsushimanus Yamane, 1990

Li, Ting-Jing, Barthelemy, Christophe & Carpenter, James M., 2019, The Eumeninae (Hymenoptera, Vespidae) of Hong Kong (China), with description of two new species, two new synonymies and a key to the known taxa, Journal of Hymenoptera Research 72, pp. 127-176 : 127

(36) Symmorphus tsushimanus Yamane, 1990

Figs 119-121 , 122-124

Symmorphus tsushimanus Yamane, 1990: 1, 115, "top of Ariake-san (558 m. alt.), Tsushima Is." [Japan], OCMNH. Type: male.

Material examined.

CHINA: Hong Kong : 1♀, Pak Sha O, Malaise trap, 08-21.iv.2018, UTM: 50Q KK 242 849, 70m, ref.: M340. C.Hy. 4 [CBC] .

First description of female.

Body length 7.5 mm, fore wing length 8.5 mm. Black ( Figs 119-120 ), with yellow to orange yellow markings as follows: basal half of clypeus ( Fig. 121 ), a spot above interantennal space, a large band on antennal scape ventrally, a small spot on upper part of gena, a pair of big triangular spots on pronotum anteriorly, a spot on dorsal mesepisternum, a pair of spots on scutellum, wide apical band of T1 (laterally narrower and mesally with anterior incision), wide apical band of T2 (somewhat sinuate), medially interrupted apical band on S2, a narrow apical band on T4 (not extending to lateral margin), apexes of fore and mid femur, ventral face of fore tibia, and a spot of tegula posteriorly; mandible and tegula (except yellow spot) dark ferruginous; legs except yellow parts blackish brown.

Head about as wide as long in front view; clypeus ( Fig. 121 ) wider than long, minutely and sparsely punctate, apical margin almost truncated, apical width equal to interantennal distance; frons coarsely punctuate, interspaces between punctures reticulate; punctures on vertex and gena slightly sparser than those of frons; two cephalic foveae ( Fig. 122 ) right behind posterior ocelli, just a little smaller than posterior ocelli and bearing brownish setae; occipital carina complete, without incision. Pronotal carina ( Fig. 122 ) complete, front corner slightly produced, pronotum coarsely punctate and somewhat striate on lateral side; punctures on mesoscutum and scutellum sparsely bigger and a little sparser than those of pronotum, interspaces between punctures with minute punctures, notaulices of mesoscutum complete and median scutalline present at base; scutellum with a median furrow; epicnemial carina present and strong; mesopleuron just obviously with a few sparse punctures, interspaces between punctures polished; metanotum coarsely punctate in basal half and coriaceous in apical part; metapleuron finely striate; propodeal shelf narrow and indistinct, and with a deep median orifice; dorsal face of propodeum coarsely punctate, punctures large, shallow, flat bottomed and interspaces between punctures obviously with reticulate carinae; posterior side of propodeum finely striate and with strong median carina; lateral side of propodeum striate, sparsely with a few large punctures posteriorly. Anterior vertical face of T1 with ill-defined punctures except for upper part, without vertical carina; transverse carina mesally with a deep U-formed incision; dorsal horizontal part of T1 ( Fig. 123 ) distinctly wider than long, coarsely punctate excluding apical yellow, smooth band; without apical lamella as that of Japanese male ( Yamane 1990); S1 ( Fig. 124 ) punctate and carinate almost as that in male ( Kim and Lee 2006); other tergites and sternites much more finely punctate. Anterior faces of coxae and femora below with silver setae.

Distribution.

*China (*Hong Kong); South Korea; Japan.

Remarks.

A scarce wasp in Hong Kong, known from a single specimen. The species has Palearctic affinities.

Figures

Figures 113 - 121. Rhynchium quinquecinctum quinquecinctum, female 113 habitus (lateral view) 114 habitus (dorsal view) 115 head (frontal view) 116 - 118 Subancistrocerus camicrus, female 116 habitus (lateral view) 117 habitus (dorsal view) 118 head (frontal view) 119 - 121 Symmorphus tsushimanus, female 119 habitus (lateral view) 120 habitus (dorsal view) 121 head (frontal view).

Figures 122 - 131. Symmorphus tsushimanus, female 122 vertex (dorsal view) 123 T 1 (dorsal view) 124 S 1 (ventral view) 125 - 126 Calligaster himalayensis, female 125 habitus (lateral view) 126 head (frontal view) 127 - 129 Zethus dolosus, female 127 habitus (lateral view) 128 habitus (dorsal view) 129 head (frontal view) 130 - 131 Delta pyriforme 130 female constructing a cell 131 ventral side of a nest showing seven cells with brood, most at advanced pupal stage.