Tetralonioidella maniwengensis Niu & Zhu, 2017

Niu, Zeqing, Yuan, Feng & Zhu, Chaodong, 2017, Taxonomic study of the genus Tetralonioidella Strand from China (Hymenoptera: Apidae: Melectini), Zoological Systematics 42 (4), pp. 418-445 : 437-439

Tetralonioidella maniwengensis Niu & Zhu , sp. nov. ( Figs 16–17 )

Diagnosis. Apical margin of labrum slightly concave, similar to male of T. fukienensis and T. insidiosa , but they can be distinguished by the different S7, S8 and genitalia.

Description. Male. BL = 10.1 mm ( Fig. 16a ); head broader than long, HW: HL = 64: 47 ( Fig. 16b ); gena distinctly narrower than eye, GW: EW= 9:19; width of metasoma slightly broader than the width between the tegulae, MtW: MsW=76: 74. Clypeus broader than long ( Fig. 16b ); apical margin of labrum slightly concave ( Fig. 16c ); antenna short, reaching front margin of tegula, scape conically broadened, longer than F1 to F3 together, flagellomere equal in breadth, F1 longer than broad, nearly 1.2 times as long as broad, F2 long than broad, nearly 1.5 times as long as broad, F3 longer than broad, nearly 1.2 times as long as broad, F4, F5, F6 and F10 equal in length about 1.1 times as long as broad, F7–F9 equal in length, nearly as long as broad, F11 rounded apically, equal in length with F2, about 1.5 times as long as broad ( Fig. 16d ); fore wing with distinct numerous papillae apically ( Fig. 17a ); scutellar spines short and broad, blunt rounded apically, barely visible between pubescence; inner ramus of hind tarsal claw axe-shaped, arolium present ( Fig. 16b ); ventral surface of apical part of S7 with dense setae laterally, median part slightly concave, with sparse setae ( Fig. 17c ); apical margin of median process of S8 distinctly concave ( Fig. 17d ); genitalia as illustrated in Fig. 17e (in dorsal view) and Fig. 17f (in lateral view), basal part of gonostylus with crescent-shaped process dorsally, and the process with dense long hairs along dorsal margin ( Fig. 17f ). Clypeus black ( Fig. 16b ); mandible reddish-brown; labrum dark yellowish-brown except apical margin black ( Fig. 16c ); antenna black beneath ( Fig. 16d ); tegula yellowish-brown ( Fig. 16e ); all legs dark reddish-brown; hind tarsal claw black apically ( Fig. 17b ). Scutum pubescence yellowish ( Figs 16a, e ); clypeus covered with white hairs, periphery of antennal socket, supraclypeal area, paraocular area and front surface of scape covered with yellowish-white hairs ( Fig. 16b );vertex, genal area, scutum, scutellum, metanotum and episternum covered with dense and long yellowish hairs ( Figs 16a, e ); T1 covered with thin and short yellowish-brown hairs ( Fig. 16f ), T2-T4with short, yellowish-white hair bands before marginal zones, and the bands gradually narrowed medially; disc of T2–T4 covered dark yellowish-brown hairs ( Figs 16a, f , 17a ).

Female. Unknown.

Material examined. Holotype. ♂, China, Xizang, Mêdog, Maniweng (28º44′N, 95º01′E; elev. 1050 m), 31.VI.1979, coll. Gentao Jin & Jianyi Wu.

Distribution. China (Xizang).

Etymology. The type location Maniweng (Mêdog, Xizang, China) is given as the specific name.

Figures

Figure 16. Tetralonioidella maniwengensis Niu & Zhu, sp. nov., male. a. Body, lateral view. b. Head, frontal view. c. Labrum, frontal view. d. Antenna. e. Mesosoma, dorsal view. f. Metasoma, dorsal view. Scale bars=1mm.

Figure 17. Tetralonioidella maniwengensis Niu & Zhu, sp. nov., male. a. Fore wing, showing the papillae. b. Claw, showing the inner ramus. c. S7, ventral view. d. S8, ventral view. e. Genitalia, dorsal view. f. Genitalia, lateral view. Scale bars: a, e, f= 1mm; b, c, d=0.5mm.