Table 2. Differences between Sphecodes atlanticus Warncke, 1992 and S. scabricollis Wesmael, 1835 in The distribution of the genus Sphecodes Latreille (Hymenoptera, Halictidae) of the Arabian Peninsula and surrounding countries with description of hitherto unknown female of S. atlanticus Warncke, 1992 and male of S. dathei Schwarz, 2010

Table 2. Differences between Sphecodes atlanticus Warncke, 1992 and S. scabricollis Wesmael, 1835. CharactersSphecodes atlanticusSphecodes scabricollisBoth sexesDistance from top of head to upper margin of lateral ocellus as seen in frontal and dorsal viewsabout one lateral ocellar diameters (Fig. 5)about two lateral ocellar diameters (Fig. 3)Propodeal triangle/metaposnotumequal (in female) or longer (in male) than mesoscutellum (Figs 9, 10)distinctly shorter than mesoscutellum (Figs 8)Metasomal tergawith coarser and denser punctures (Fig. 19)with fine and sparser punctures, especially on T1 (Fig. 18)MaleMesoscutumpunctures separated by at most 1.5-2.0 puncture diameters; polished between punctures (Fig. 9)areolate (Fig. 8)Genitaliagonocoxite dorsally with weak impression; gonostylar process longer (Fig. 22)gonocoxite dorsally without impression; gonostylar process shorter (Fig. 23)FemaleParaocular areaswith dense pubescence obscuring integument (Fig. 5)with sparse pubescence not obscuring integument (Fig. 3)表2. 大西洋隧蜂（Sphecodes atlanticus Warncke, 1992）与糙颈隧蜂（S. scabricollis Wesmael, 1835）的形态差异 性状 大西洋隧蜂 糙颈隧蜂 两性共性： 1. 正面观与背面观下，头顶至侧单眼上缘的距离：约为1个侧单眼直径（图5）；糙颈隧蜂约为2个侧单眼直径（图3） 2. 并胸腹节三角区/后小盾片：大西洋隧蜂雌性中与中胸小盾片等长，雄性中长于中胸小盾片（图9、10）；糙颈隧蜂显著短于中胸小盾片（图8） 3. 腹部背板：大西洋隧蜂刻点粗糙且稠密（图19）；糙颈隧蜂刻点细小且稀疏，尤以第一腹背板（T1）为甚（图18） 雄性特有性状： 1. 中胸背板：大西洋隧蜂刻点间距最大不超过1.5~2.0倍刻点直径，刻点间区域光滑发亮（图9）；糙颈隧蜂刻点间具网状纹饰（图8） 2. 外生殖器：阳基基片（gonocoxite）背侧具浅凹陷，阳基侧突柄（gonostylar process）较长（图22）；糙颈隧蜂阳基基片背侧无凹陷，阳基侧突柄较短（图23） 雌性特有性状： 1. 眼侧区：大西洋隧蜂密被柔毛，完全遮盖体表（图5）；糙颈隧蜂柔毛稀疏，未遮盖体表（图3）