Blacus (Ganychorus) shanxiensis, Lu & Chai & Achterberg & Tang & Chen, 2025

Blacus (Ganychorus) shanxiensis sp. nov.

( Figs 29–30 View FIGURE 29 View FIGURE 30 )

Material examined. Holotype: ♀, China, Shanxi, Li Mtn, Xiachuan, Zhuweigou , 23–24.VII.2012, Liu Zhen, yellow pan trap, No. 201207032 ( ZJUH). Paratypes: 6♀♀, China, Shanxi, Li Mtn, Xiachuan, Zhuweigou , 23– 24.VII.2012, Liu Zhen , yellow pan trap, Nos. 201207029, 201207115; 24.VII.2012, Liu Zhen , yellow pan trap, No. 201201207; 26.VII.2012, Liu Zhen , yellow pan trap, No. 201209131; 23.VII.2012, Liu Zhen, Nos. 201206703, 201206705 ( ZJUH) .

Diagnosis. The new species is similar to B. (G.) sutchanicus Belokobylskij, 1995 because the ♀ -antenna has 20 antennomeres, precoxal sulcus wide and striate-rugose, frontal suture present, length of eye in dorsal view approx. 1.2 × temple, body reddish brown, fore and middle claws with blackish bristles, hind claws simple, propodeum rugose between carinae, propodeal tubercles absent, and propodeum without areola, but differs by having comparatively wide notauli (comparatively narrow in B. (G.) sutchanicus ), malar suture absent (indistinctly developed), length of malar space 2.6 × basal width of mandible (1.5–1.7 ×), side of pronotum largely reticulate-rugose (smooth dorsally), mesopleuron reticulate-rugose except for precoxal sulcus (whole mesopleuron striate-rugose), first discal cell of fore wing acute (truncate), hind femur with brown band (without), length of first metasomal tergite 1.7–1.8 × its apical width (1.8–2.2 ×).

Description. Female. Length of body 2.45 mm, length of fore wing 2.3 mm.

Head. Antennomeres 20 ( Fig. 30C View FIGURE 30 ); length of first flagellomere 1.4 × length of second flagellomere; length of first, second and penultimate flagellomere 4.25, 3.0 and 1.5 × their width, respectively; length of maxillary palp approx. 1.0 × height of head; occipital carina complete; frons smooth and sparsely setose, frons suture present; OOL: OD: POL = 11: 3: 5; length of eye in dorsal view 1.3 × length of temple; face rugose; malar suture absent, length of malar space 2.6 × basal width of mandible.

Mesosoma. Length of mesosoma 1.5 × its height; side of pronotum largely reticulate-rugose; whole mesopleuron rugose, precoxal sulcus wide and striate-rugose and remainder reticulate-rugose; notauli wide, deep and rugose ( Fig. 30E View FIGURE 30 ); middle mesoscutal lobe and area near notauli setose; scutellum rugose near its lateral carina, not protruding dorsally; propodeal tubercles absent; surface of propodeum rugose and medial area absent ( Fig. 30G View FIGURE 30 ).

Wings. Fore wing: first discal cell acute anteriorly; 1-CU1: 2-CU1 = 4: 7 ( Fig. 30I View FIGURE 30 ).

Legs. Hind coxa with several rugae dorsally; length of femur, tibia and basitarsus of hind leg 6.2, 10.2 and 9.7 × their width, respectively; fore and middle claws with blackish bristles, hind claws simple.

Metasoma. Length of first tergite 1.7 × its apical width, widened apically, robust, longitudinally rugose ( Fig. 30G View FIGURE 30 ); second tergite smooth, except setiferous punctures ( Fig. 30G View FIGURE 30 ); length of ovipositor sheath 0.20 × length of fore wing.

Colour. Reddish brown; basal 4 antennomeres yellow, remainder brown; fore and middle legs, tegulae, palpi and mandible yellow; hind leg (except coxa and trochanter) yellowish brown, subapical half of hind femur with brown band; all telotarsi, metasoma (except first tergite), pterostigma and veins brown; parastigma whitish; wing membrane slightly infuscated.

Variation. Length of first tergite 1.7–1.8 × its apical width; basal 4–5 antennomeres yellow.

Male. Unknown.

Biology. Unknown.

Distribution. China (Shanxi).

Etymology. The specific name shanxiensis refers to the province of the collection site.