Taiwanomyrme latisquamula Tu, Lelej et Chen

Tu, Bin-Bin, Lelej, Arkady S. & Chen, Xue-Xin, 2015, Review of the genus Taiw ano my rme Tsuneki, 1993 (Hymenoptera, Mutillidae, Mutillinae), with description of two new species from China, Zootaxa 4020 (3), pp. 588-600 : 596-599

Taiwanomyrme latisquamula Tu, Lelej et Chen , sp. nov.

( Figs 5 , 7 )

Diagnosis. FEMALE. Gena posteriorly without carina, with short pointed tubercle posterior to insertion of mandible. Scutellar scale wide, V-shaped, almost touching propodeal spiracle. Metasomal tergum 2 anteriorly with a pair of transversely arranged, circular spots of pale yellow setae, posteriorly with medially widened band of black setae. Metasomal tergum 3 with complete band of dense yellow setae. Pygidial area microstriate, strongly carinate laterally. Body black; metasomal segments 1–3 and legs ferruginous-red. MALE unknown.

Description. Female. Body length 7.5 mm. Ratio of head width and mesosoma width 51:47. Ratio of mesosoma length and width 68:47. Head. Mandible bidentate, not excised beneath. Clypeus anteriorly transversely concave, smooth and shiny, anterior border with median notch; posteriorly subtriangular, elevated and punctate, with median tubercle. Antennal tubercle carinate above; first flagellomere 1.5 × as long as its maximal width, 1.5 × as long as flagellomere 2. Gena posteriorly without carina, with short pointed tubercle posterior to insertion of mandible. Frons, vertex and gena with dense confluent punctures.

Mesosoma . Humeral angle prominent. Ratios of width at humeral angle, widest point of pronotum, anterior spiracle, propodeal spiracle and widest point of propodeum 42:47:42:40:41. Scutellar scale wide, V-shaped, almost touching propodeal spiracle. Mesosoma dorsally with coarse dense confluent punctures; propodeum longitudinally striate. Pleuron and propodeum laterally with fine shallow punctures. Lateral margin of propodeum crenulate.

Legs. Legs with sparse suberect yellow setae. Meso- and metatibia each with one row of 4–5 fuscous spines. Metatibio-tarsal ratios of 62:25:16:11:8:11.

Metasoma. Tergum 1 with elongate shallow sparse punctures. Tergum 2 with separate punctures, posteriorly denser. Terga 3–5 with fine dense somewhat confluent punctures. Sternum 1 with simple longitudinal carina. Sternum 2 with sparse separate punctures. Tergum 6 anteriorly and sterna 3–5 posteriorly with fine dense confluent punctures. Pygidial area microstriate, strongly carinate laterally.

Colour and pubescence. Body black, metasomal segments 1–3 and legs ferruginous-red, tergum 3 anteromedially blackish. Mandible, antennae, propleuron, mesosoma ventrally tinted reddish. Tibial spurs yellowish. Frons and vertex with sparse suberect fuscous setae, mixed with sparse erect black setae; gena with sparse recumbent pale yellow setae. Mesosoma dorsally with sparse suberect fuscous to black setae. Propodeum posteriorly with long sparse erect yellow setae. Pleuron and propodeum laterally with pale yellow recumbent micropubescence. Terga 1 and 6 with long, sparse erect golden yellow setae. Tergum 2 anteriorly with a pair of bilateral circular spots of pale yellow setae, ratios of spot diameter, spot interspace and longitudinal eye diameter 21:32:32, posteriorly with medially widened band of black setae. Felt line on tergum 2 rufous. Tergum 3 clothed with dense yellow setae on posterior three-fourths. Terga 4 and 5 with erect black setae. All metasomal sterna with sparse golden yellow setae. Sterna 2–6 posteriorly with apical fringe of yellow to fuscous setae.

Material examined. Holotype. ♀, CHINA, Guizhou, Leigong Muntain, Lianhuaping, 2. VI. 2005, Liu Jingxian, No. 20059300 ( ZJUH).

Distribution. China (Guizhou).

Remarks. The female of this new species is similar to that of T. basirufus ( Chen, 1957) , but differs by having the scutellar scale wide, V-shaped (scutellar scale small, pointed in T. basirufus ); and the pygidial area microstriate (smooth in T. basirufus ).

Etymology. The specific name is a noun in apposition and refers to the wide scutellar scale.

Figures

FIGURE 5. Taiwanomyrme latisquamula sp. nov., ♀, holotype. A. Habitus, lateral view. B. Mesosoma, dorsal view. C. Metasoma, dorsal view. D. Head, frontal view. E. Head, dorsal view. F. Head, lateral view. G. Pygidium. Scale lines = 0.5 mm.

FIGURE 7. Distribution map of five species of Taiwanomyrme.