Gollumiella buffingtoni, Heraty, John, 2004

Heraty, John, 2004, Three new species of Gollumiella Hedqvist (Hymenoptera: Eucharitidae), Zootaxa 497, pp. 1-10 : 3-6

Gollumiella buffingtoni new species ( Figs 1 , 3–8 , 12–14 )

Diagnosis. This species keys to G. longipetiolata in Heraty (1992). G. buffingtoni can be distinguished from all other species of Gollumiella by the combination of all yellow coxae, yellowish white legs, a basally dark brown and striate petiole, and an elongate scape exceeding the median ocellus ( Fig. 1 ). Some females of G. longipetiolata also have the apex of the petiole lighter in color and the scape may exceed the median ocellus, but their coxae are always dark brown.

Discussion. Hedqvist (1978) referred to the female holotype of G. longipetiolata ( Philippines) as having a brown petiole, yellowish brown coxae, and pale yellow legs and antennae (type not examined). Hedqvist reported the paratype male as having a brown femur and flagellum, but this specimen was later attributed to Anorasema pallidipes (Walker) ( Bouček 1988, and verified by my examination of the paratype). Bouček (1988) questioned whether the holotype was actually a male. It is impossible to determine this from the description, but in general, males and females of Gollumiella have the same color pattern. All of the specimens attributed to G. longipetiolata (male and female) by Heraty (1992) had brown coxae, a yellow or an evenly yellowish­brown femur, and a completely brown petiole or at most with the apex of the petiole slightly lighter.

Female. Length 1.7–2.1 mm. Brown; flagellum and pedicel pale brown; scape and legs including coxae yellowish white; mandibles except for brown outer edge, ovipositor and third valvulae pale brown to yellowish white; distal tarsomere dark brown; petiole mostly dark brown but with apex pale brown to yellow ( Fig. 1 ). Wings hyaline.

Head subtriangular, 1.18–1.29 X as broad as high. POL 0.71–0.97 X OOL. Face rounded and smooth with scattered fine setae, genae nearly straight in frontal view; occiput glabrous, dorsal angle with occiput abrupt and with only faint transverse­aciculate sculpture. Clypeal margin truncate and with scattered fine setae. Eyes separated by 1.6–1.8 X their height. Malar space 0.70–0.90 X height of eye. Labrum with 4 long digits, epipharynx with 2 minute setae ( Fig. 7 ). Antenna 10–11 segmented ( Fig. 3 ); scape exceeding median ocellus, length 1.04–1.16 X distance between torulus and upper margin of median ocellus, scape slightly expanded medioventrally; 7–8 funicular segments, FL1 and FL2 completely fused (holotype and some paratypes, Fig. 3 inset) or separated, combined length 3 X as long as broad, if separate, FL1 1.3–2.0 X as long as FL2; flagellum 0.9–1.1 X height of head, setae of flagellum long, dense and semi­erect; clava tapering to acute point.

Mesosoma with rugose­alveolate sculpture, scutoscutellar sulcus deeply impressed and weakly carinate; scutellum as long as broad, frenal carina either poorly developed and arcuate dorsally (holotype, Japan and some China specimens) or prominent and bisinuate ( China). Propleuron with several irregular oblique carinae. Coxae smooth and semi­globose, hind coxa 1.8–2.0 X as long as broad; hind femur with scattered short inclinate setae laterally, tibia sparsely setose. Fore wing 2.3–2.5 X as long as broad ( Fig. 5 ), 3.1–3.4 X length of mesothorax; speculum open basally; veins poorly defined; submarginal vein dorsally with few minute setae basally but otherwise bare; stigmal vein 1.5–2.0 X as long as broad and equal in width to apical group of sensilla ( Fig. 8 ); postmarginal vein poorly defined, 1.5–3.2 X as long as stigmal vein.

Petiole 2.1–2.5 X as long as hind coxa, straight in profile, irregularly longitudinally striate but with distal fifth mostly smooth. Hypopygium with 6 long hairs along apical margin. Dorsal valve of ovipositor broad (dv, Fig. 12 ) and with a distinct median keel dorsally (not shown); base of second valvula expanded into tripartite structures (triangular sclerites) joined by a laminar bridge ( Figs 12, 13 ).

Male. Length 1.7–2.1 mm. Agrees with female except as follows: antenna ( Fig. 4 ) with scape 1.08–1.31 X distance between torulus and upper margin of median ocellus; flagellum 1.0–1.1 X height of head. Genitalia ( Fig. 14 ); elongate parameres with two subapical setae, digiti each with 3 marginal spines, aedeagus broadly rounded.

Distribution. Japan (Honshu and Kyushu), People’s Republic of China (Beijing).

Type Material. Holotype, Ψ, “ JAPAN: Niigata Kurokawa, Tainai Riv. 29.viii.1996 500m 38°17’N 139°44’E 29.viii. 1996, 500m L.Masner, s.s. J­34”, deposited in CNC. Paratypes: from same collection as holotype, 2 Ψ with additional label “ DNA Voucher D#994 UCR, J. Heraty” (8 Ψ 12 ɗ, CNC, UCRC); “ Japan Aichi Pref. Douzuki, Obara, 15– 22.vii.1990, K. Yamagishi” (3 Ψ, CNC); “ JAPAN: Kyushu, 750m Fukoka, Mt. Hiko 21– 29.vii.1989 A.Takanao, M. Sharkey” (1Ψ, CNC); “ CHINA: Beijing, Fragrant Hills Park near Glazed Pagoda, 23–24.vii.2002, M.L. Buffington sweep riparian vegetation and juniper (including ferns)” with additional label “ DNA Voucher D#853 UCR, J. Heraty” (5 Ψ 5 ɗ, slide # 1­13­012­01, UCRC, IZCAS).

Molecular information. Three gene regions were sequenced for 2 individuals from China and 3 individuals from Japan (Masner collection). The 5 individuals were identical for all regions. Data for the ribosomal transcript regions 28S­D2&D3 and 18S–E23 are deposited on GenBank as assession numbers AY552570 and AY552193 . Differs from G. longipetiolata by 6 nucleotide differences (28S­D2:5; 28S­D3:1) (Heraty et al. in press).

Etymology. Named after Matt Buffington for his collection of part of the type series.

Figures

FIGURES 1 – 2. 1, Gollumiella buffingtoni, habitus of holotype female, inset is dorsolateral view of petiole; arrow points to pale apical coloration of petiole. 2, Gollumiella ochreata, habitus of holotype male. Scale bar is 0.5 mm.

FIGURES 3 – 11. 3 – 8, Gollumiella buffingtoni: 3, female antenna; 4, male antenna; 5, fore wing of female; 6, hind wing of female; 7, labrum (la) and epipharynx (epi); 8, stigmal vein; 9 – 11, G. darlingi; 9, stigma of female; 10, fore wing of female; 11, base of antennal flagellum of female. Arrowheads point to homologous point of separation between flagellomeres F 1 and F 2.

FIGURES 12 – 14. Gollumiella buffingtoni. 12, ovipositor, ventral view; 13, montage image of ovipositor base; 14, male genitalia, ventral view. Abbreviations: aed = aedeagus, dig = digitus, dv = dorsal valve, go = gonangulum, lb = laminar bridge, par = paramere, trs = triangular sclerite, v = valvula, vf = valvifer, vv = ventral valve.