Leptopareia Rosa & Xu, 2016

Rosa, Paolo, Wei, Na-Sen, Notton, David & Xu, Zai-Fu, 2016, Revision of the Oriental genus Holophris Mocsáry, 1890 and description of the genus Leptopareia Rosa & Xu, gen. nov. (Hymenoptera, Chrysididae), Zootaxa 4083 (2) : 211-212

Genus Leptopareia Rosa & Xu , gen. nov.

( Figs 1C , 2A , 3A , 7A – 9F , 10A – 11D )

Leptopareia Rosa & Xu , gen. nov. Type species: Hedychrum borneanum Cameron, 1908: 61 .

Diagnosis. The genus Leptopareia gen. nov., is closely related to Holophris Mocsáry , but it can be easily separated by the combination of following characteristics: head, in lateral view, with indistinct subgenal area and subgenal carina ( Fig. 3A ) (distinct in Holophris ( Fig. 3B ); compare Fig. 65 and Fig. 66b in Kimsey & Bohart 1991); MS short, 0.2–0.5 MOD (longer, 1.0–1.5 MOD in Leptopareia ); MS not bisected by genal carina (bisected in Holophris ); head elliptical, in frontal view ( Figs 8B , 9B , 10B , 11B ) (with convex upper profile in Holophris ( Figs 4B , 5B , 6B )); inner margin of eye sinuous (straight in Holophris ); pronotum laterally with deep fovea (without lateral fovea in Holophris ); mesoscutum with distinct and complete notauli (indistinct in Holophris ); notaular pits deep and round (usually narrow in Holophris ); double omaulus subparallel (triangularly shaped in Holophris ); TPC extending to apex of PA (below PA in Holophris ); fore wing with elongated C, Sc+R and M, and pterostigma positioned over half length of anterior margin ( Fig. 2A ) (with shortened C, Sc+R and M, and M considerably arched, pterostigma positioned at less than half length of anterior margin in Holophris ); apex of T3 with or without distinct median notch (without distinct median notch in Holophris ).

Description. Mandible tridentate; scapal basin deep and usually transversely striated, at least laterally; face with long white setae (up to 1 MOD); head elliptical, in frontal view; gena very narrow under lower margin of eye, not carinate ( Fig. 3A ); subgenal area indistinct ( Fig. 3A ); MS <1 MOD and not bisected by genal carina ( Fig. 3A ); inner margin of eye usually sinuous ( Fig. 7B ); occipital area, pronotum and mesoscutum medially impunctate or with sparse tiny punctures ( Figs 7C , 8C , 9C , 10C , 11C ); notauli distinct ( Figs 7C , 8C , 9C , 10C , 11C ); notaular pits deep and rounded; mesoscutellum usually without anterior foveae (with exception of L. congoensis ( Fig. 11C )); mesopleuron sub-rectangular with subparallel double omaulus ( Figs 2C , 7A , 8A , 9A , 10A , 11A ); TPC extending to apex of PA ( Fig. 1C ); propodeal angle subparallel and not sharply developed ( Fig. 9C ); tarsal claw with three to four teeth; apex of T3 with wide semitransparent rim (± 1 MOD), with or without median notch ( Figs 7F , 8F , 9F , 10F , 11F ).

Biology. Unknown.

Distribution. Leptopareia Rosa & Xu , gen. nov. is currently known from the Afrotropical and Oriental Regions.

Species included. At present, this genus includes seven species: L. borneana ( Cameron, 1908) , comb. nov., L. luzonensis sp. nov. and L. purpurea ( Smith, 1860) , comb. nov. (Oriental); L. abyssinica ( Mocsáry, 1914) , comb. nov. ( Figs 10A–10D ), L. confusa ( Kimsey, 1988), comb. nov., L. congoensis (du Buysson, 1900) , comb. nov. ( Figs 11A–11D ), and L. kalliopsis ( Zimmermann, 1961), comb. nov. (Afrotropical).

Etymology. The name Leptopareia is derived from the Greek words λεππτός (leptós = thin) and παρειά (pareia = gena) and refers to the thin and narrow gena with indistinct subgenal area. The gender is feminine.

Figures

FIGURE 1. Mesopleuron and metapleuron, lateral view. A. Omalus aeneus (Fabricius); B. Holophris marginella (Mocsáry); C. Leptopareia borneana (Cameron).

FIGURE 2. Fore wing venation. A. Leptopareia borneana (Cameron); B. Holophris thailandica sp. nov.

FIGURE 3. Head, lateral view. A. Leptopareia borneana (Cameron); B. Holophris taiwana (Tsuneki). Arrow pointing to subgenal carina.

FIGURE 4. Holophris marginella (Mocsáry), ♀, Hainan, Bawangling. A. Habitus, lateral view; B. Head, frontal view. C. Head, pronotum and mesoscutum, dorsal view; D. Mesosoma, dorsal view; E. Metasoma, dorsal view; F. T 3, posterior view.

FIGURE 5. Holophris taiwana (Tsuneki), ♀, Hainan, Diaoluoshan. A. Habitus, lateral view; B. Head, frontal view; C. Head, pronotum and mesoscutum, dorsal view; D. Mesosoma, dorsal view; E. Metasoma, dorsal view; F. T 3, posterior view.

FIGURE 6. Holophris thailandica sp. nov., ♀, holotype. A. Habitus, lateral view; B. Head, frontal view; C. Head and mesosoma, dorsal view; D. Mesosoma, dorsal view; E. Metasoma, lateral view; F. T 3, posterior view.

FIGURE 7. Leptopareia borneana (Cameron), ♀, lectotype. A. Habitus, lateral view; B. Head, frontal view; C. Head and mesosoma, dorsal view; D. Metasoma, dorsal view; E. Head, dorsal view; F. T 3, dorsal view. (© The Trustees of the Natural History Museum, London).

FIGURE 8. Leptopareia luzonensis sp. nov., ♀, holotype. A. Habitus, lateral view; B. Head, frontal view; C. Mesosoma, dorsal view; D. Metasoma, dorsal view; E. Metasoma, lateral view; F. T 3, posterior view.

FIGURE 9. Leptopareia purpurea (Smith), ♀, holotype. A. Habitus, lateral view; B. Head, frontal view; C. Mesosoma, dorsal view; D. Metasoma, dorsal view; E. Metasoma, ventral view; F. T 3, dorsal view. (Photos courtesy of Dr. James Hogan).

FIGURE 10. Leptopareia abyssinica (Mocsáry), ♀, holotype, Harrar, Ethiopia (HNHM). A. Habitus, lateral view; B. Head, frontal view; C. Mesosoma, dorsal view; D. Metasoma, dorsal view.

FIGURE 11. Leptopareia congoensis (du Buysson), ♀, holotype of its synonym L. bayonii (Mantero, 1910) from Busso Busoga, Uganda (MSNG). A. Head, mesosoma, and T 1, lateral view; B. Head, frontal view; C. Mesosoma and T 1, dorsal view; D. T 3, dorsal view.