Tetralonioidella longqiensis 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 : 433-437

Tetralonioidella longqiensis Niu & Zhu , sp. nov. ( Figs 13–15 )

Diagnosis. The new species is very similar to T. fukienensis , but both sexes apical margin of labrum convex medially.

Description. Male. BL 9.2 mm ( Fig. 13a ); head broader than long, HW: HL=62: 45 ( Fig. 13b ); gena distinctly narrower than eye, GW: EW = 10: 16; width of metasoma slightly broader than the width between the tegulae, MtW: MsW = 72: 70. Clypeus broader than long ( Fig. 13b ); apical margin of labrum convex medially ( Fig. 13c ); antenna short, reaching front margin of tegula, scape conically broadened, as long as 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 1.4 times as long as broad, F3 equal in length with F1, about 1.2 times as long as broad, F4–F10 equal in length, nearly as long as broad, F11 rounded apically, equal in length with F2, about 1.4 times as long as broad ( Fig. 13d ); fore wing with distinct numerous papillae apically ( Fig. 14a ); scutellar spines slender, tapering sharp apically, barely visible between pubescence; inner ramus of hind tarsal claw axe-shaped, arolium present ( Fig. 14b ); ventral surface of apical part of S7 with dense setae laterally, median part straight, with sparse setae ( Fig. 14c ); apical margin of median process of S8 slightly concave ( Fig. 14d ); genitalia as illustrated in Fig. 14e (in dorsal view) and Fig. 14f (in lateral view), basal part of gonostylus with blunt triangular process dorsally, and the process with dense long hairs along dorsal margin, another slender belt-shaped projection with long hairs at its apex presented outside ( Fig. 14f ). Clypeus black ( Fig. 13b ); mandible dark reddish-brown; labrum blackish-brown ( Fig. 13c ); antenna dark blackish-brown beneath ( Fig. 13d ); tegula yellowish-brown ( Fig. 13e ); all legs dark reddish-brown; hind tarsal claw blackish-brown apically ( Fig. 14b ). Scutum pubescence yellowish ( Figs 5a, e ); clypeus, periphery of antennal socket, supraclypeal area, paraocular area and front surface of scape covered with sparse yellowish-white hairs ( Fig. 13b ); vertex, genal area, scutum, scutellum, metanotum and episternum covered with dense and long yellowish hairs ( Figs 13a–b, e ); all metasomal terga uniformly covered with thin and short yellowish hairs ( Fig. 13f ).

Female. BL 10.4mm ( Fig. 15a ); head broader than long, HW:HL = 62: 46 ( Fig. 15b ); gena distinctly narrower than eye, GW: EW = 10: 20; width of metasoma slightly broader than the width between the tegulae, MtW: MsW = 85: 78. Clypeus broader than long ( Fig. 15b );apical margin of labrum convex medially ( Fig. 15c ); antenna short, reaching front margin of tegula, scape conically broadened, as long as F1 and F2 together, flagellomere equal in breadth, F1 slightly longer than broad, nearly 1.2 times as long as broad, F2 long than broad, nearly1.6 times as long as broad, F3 longer than broad, nearly 1.4 times as long as broad, F4–F9 equal in length, about 1.2 times as long as broad, F10 rounded apically, equal in length with F3, about 1.4 times as long as broad ( Fig. 15d ); fore wing with distinct numerous papillae apically ( Fig. 15e ); scutellar spines slender, tapering sharp apically, barely visible between pubescence; inner ramus of hind tarsal claw claw-like, arolium present ( Fig. 15h ). Clypeus black ( Fig. 15b ); labrum black ( Fig. 15c ); antenna dark blackish-brown beneath ( Fig. 15d ); tegula yellowish-brown ( Fig. 15f ); all legs dark reddish-brown except mediotarsus and distitarsus dark yellowish-brown. Scutum pubescence yellowish-brown ( Figs 15a, f ); clypeus covered short pale white hairs, periphery of antennal socket, supraclypeal area, paraocular area and front surface of scape covered long yellowish- white hairs ( Fig. 15b );vertex, scutum, scutellum, metanotum covered with yellowish-brown hairs ( Figs 15a, d, f ); dorsal half part of genal area covered with yellowish-brown hairs, ventral half part covert yellowish-white hairs, episternum covered yellowish-brown hairs ( Fig. 4a ); all metasomal terga uniformly covered with short, yellowish-brown hairs ( Fig. 15g ).

Material examined. Holotype. ♂, China, Fujian, Mt. Longqi (26º44′N, 117º24′E; elev. 850 m), 26.VI.1991, coll.

Xingjian Wang. Paratype. 1♀, same locality as holotype, 25.VI.1991, coll. Longlong Yang.

Distribution. China (Fujian).

Etymology. The type location Mt. Longqi (Fujian, China) is given as the specific name.

Figures

Figure 4. Tetralonioidella damenglongensis Niu & Zhu, sp. nov., female. a. Body, lateral view. b. Head, frontal view. c. Labrum, frontal view. d. Antenna. e. Fore wing, showing the papillae. f. Mesosoma, dorsal view. g. Metasoma, dorsal view. h. Claw, showing the inner ramus. Scale bars: a, b, c, d, e, f, g=1mm; h=0.5mm.

Figure 5. Tetralonioidella dinghuensis 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 13. Tetralonioidella longqiensis 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 14. Tetralonioidella longqiensis 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=1 mm; b, c, d=0.5mm.

Figure 15. Tetralonioidella longqiensis Niu & Zhu, sp. nov., female. a. Body, lateral view. b. Head, frontal view. c. Labrum, frontal view. d. Antenna. e. Fore wing, showing the papillae. f. Mesosoma, dorsal view. g. Metasoma, dorsal view. h. Claw, showing the inner ramus. Scale bars: a, b, c, d, e, f, g=1mm; h=0.5mm.