Chrysellampus proximocellis Rosa, Wei & Xu

Rosa, Paolo, Wei, Na-Sen & Xu, Zai-Fu, 2015, Revalidation of genus Chrysellampus Semenov, 1932, with description of two new species from China (Hymenoptera, Chrysididae), Zootaxa 4034 (1), pp. 148-160 : 157-159

Chrysellampus proximocellis Rosa, Wei & Xu , sp. nov.

( Figs 8, 9 A–9F)

Material examined. CHINA: Holotype: 1♀, Gansu, Tianshui, Xiao Longshan (106°08.201'E 34°16.275'N), 1490 m, 7.VII.2007, leg. N. Mei. Paratype: 1♀, Yunnan, Weibaoshan Mts., W-slope (25°11'N 100°24'E), 2000–2800 m, 17.VI.2002, S Becvár & R. & H. Fouquè ( GLAC).

Diagnosis. Chrysellampus proximocellis sp. nov. can be easily separated from other species by: POL = 1 MOD (about 2 MOD in other species), F3–F11 elongate (l/w = 1.3) (l/w = 1 in other species); scapal basin deep and smooth, weakly subrugose only laterally, not transversely striated or wrinkled, only C. praeteritorum (Semenov) shares this characteristic, but the two species are easily recognisable for the different shape of head, metanotum and mesopleuron.

Description. Female. Holotype. Body length 7.1 mm ( Fig. 8). Fore wing length 5 mm. OOL = 2.0 MOD; POL = 1 MOD; MS = 0.8 MOD; relative length of P:F1:F2:F3 = 1:1.5:0.8:0.7.

Head. Frons and vertex with deep punctures ( Fig. 9 A); punctures on occipital area with subequal diameter and with two impunctate areas close to ocelli. Scapal basin deep and smooth, weakly subrugose only laterally. Vertex, occipital area and genae with colliculate, reticulate microsculpture in intervals between the punctures. Gena micropunctate and obliquely wrinkled. Ocellar triangle isosceles, with very short POL (1 MOD); postocellar line indistinct. Occipital and genal carina sharp, the latter curved close to the lower margin of eye, partially bisecting the MS.

Mesosoma. Pronotum with sharp and polished carina on anterior margin, with irregular punctures of different diameter evenly distributed, with a marked median depression on lateral sides ( Fig. 9 B). Mesoscutum basally with large and deep punctures, anteriorly with smaller punctures, evenly distributed; lateral field of mesoscutum with shallow and small round punctures evenly distributed ( Fig. 9 D). Notauli and parapsidal furrows complete. Mesoscutellum with round punctures smaller than those on mesoscutum and subequally interspaced. Metanotum elongate and gibbous, with large and deep aereolate punctures. Propodeal angles large and straight, slightly divergent. Mesopleuron with omaulus sharply carinate and scrobal carina strongly developed; lower margin of mesopleuron with large and irregular punctures ( Fig. 9 C).

Metasoma. T1, T2 and T3 with fine and spare dots ( Fig. 9 E); apex of T3 with a deep notch, bidentate at its margins and projected by a pointed rim ( Fig. 9 F); the notch has a triangular form, with the vertical angle of about 120°.

Colouration. Body metallic blue to green; vertex and occipital area, two lateral pronotal spots, lateral fields of mesoscutum, mesoscutellum anteriorly and metanotum dark metallic blue. Tegula dark brown, with blue metallic reflection. T1 anteriorly and laterally metallic green, dorsally, T2 and T3 metallic blue with violet reflections. Legs metallic green; tarsi brown with metallic green reflections at least on the first tarsomere. Scape, pedicel and F1 metallic green, rest of flagellum black. Sternites metallic green.

Male. Unknown.

Distribution. China (Gansu).

Etymology. The name proximocellis is derived from the Latin adjective proximus (= very close) and the noun ocellus, both following the second declension, plurals, in the ablative case, and the gender is masculine; proximis is shorten in the root proxim-, the species epithet is indeclinable. It refers to the short distance between posterior ocelli (POL).

Figures

FIGURE 9. Chrysellampus proximocellis sp. nov., ♀, holotype. A. Head, frontal view; B. Mesopleuron, lateral view; C. Head, pronotum, mesoscutum and mesoscutellum, dorsal view; D. Mesoscutum, mesoscutellum and metanotum, dorsal view; E. Metasoma, dorsal view; F. Apex of T 3, posterior view.