Chrysellampus obtusidentibus 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 : 154-156

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

( Figs 5, 6 A–6F)

Material examined. Holotype, ♀, CHINA: Yunnan, Jingdong, Jinping town (24°27'14''N 100°50'4''E), 28.IV.2005, leg. H-s. Wang ( SCAU). Paratypes: 4 ♀♀, with the same label as holotype ( SCAU); 1 ♀, Yunnan, Jingdong, Wenjing town (24°18'9''N 100°55'53''E), 28.IV.2005, leg. K. Wu ( SCAU).

Diagnosis. Chrysellampus obtusidentibus sp. nov. is similar to C. duplipunctatus Tsuneki, 1948 and C. heros (Semenov, 1892) for general habitus and colour. However, it can be separated by the following characteristics: mesoscutellum evenly punctate (impunctate antero-medially in C. duplipunctatus and C. heros ), metasoma with large and deep punctures (fine and shallow in C. duplipunctatus ), apex of T3 with median notch bidentate, blunted teeth without rim (pointed teeth with rim in C. duplipunctatus and C. heros ), and sparse whitish vestiture on head (dense in C. duplipunctatus and C. heros ).

Description. Female. Holotype ( Fig. 5). Body length 7.1 mm. Fore wing length 4.7 mm. OOL = 1.9 MOD; POL = 1.9 MOD; MS = 0.5 MOD; relative length of P:F1:F2:F3 = 1:1.6:1:0.7.

Head. Head with large and deep punctures ( Fig. 6 A) on frons and lateral sides of scapal basin; punctures on vertex and occipital area smaller and subequal, with two impunctate areas close to ocelli; frons, occipital area and gena colliculate, with reticulate microsculpture on intervals between the punctures. Scapal basin deep and transversely striated. Gena micropunctate and obliquely wrinkle. Ocellar triangle isosceles; postocellar line indistinct. Occipital carina and genal carina sharp; the latter curved close to lower margin of eye, partially bisecting MS.

Mesosoma. Pronotum with large and round punctures antero-medially; with smaller and round subequal punctures laterally. Mesoscutum mostly with large and deep punctures, but with smaller punctures anteriorly ( Figs 6 C, 6D). Notauli and parapsidal furrows complete. Mesoscutellum evenly with large and round punctures. Metanotum elongated and gibbous, with larger and round punctures. Propodeal angles large and straight, slightly divergent. Mesopleuron with omaulus sharply carinate and scrobal carina well developed; lower margin of mesopleuron with large and round punctures ( Figs 5, 6 B).

Metasoma. T1 and T2 with round and deep punctures dorsally, denser to lateral margins and on T3 ( Figs 5, 6 E). Apex of T3 with median notch bidentate; teeth blunted without rim ( Fig. 6 F). Some specimens show coarser punctuation on metasoma, even with double punctuation and corrugated intervals between punctures.

Colouration. Body metallic green, with blue spots on vertex, occipital area, pronotum and mesoscutum; metasoma from blue to green. Scape, pedicel and F1 metallic green, rest of flagellum black. Tegula metallic green. Leg metallic green; tarsi brown with metallic green reflections at least on the first tarsomere. Sternites metallic green.

Male: unknown.

Distribution. China (Yunnan).

Etymology. The species name is derived from the Latin adjective obtusus (=smoothed) and the noun dens (=tooth), plurals, in the ablative case, third declension, and the gender is masculine; obtusis is shorten in the root obtusi-. It refers to the apical blunted teeth on T3.

Figures

FIGURE 6. Chrysellampus obtusidentibus sp. nov., ♀, holotype. A. Head, frontal view; B. Mesopleuron, lateral view; C. Head, pronotum and mesonotum, dorsal view; D. Mesoscutum, mesoscutellum and metanotum, dorsal view; E. Metasoma, dorsal view; F. Apex of T 3, posterior view.