Gilpinia lishui Li, Wang & Wei, 2022

Li, Ze-Jian, Wang, Han-Nan, Liu, Meng-Meng & Wei, Mei-Cai, 2022, A new species of Gilpinia Benson (Hymenoptera, Diprionidae) from Lishui, China, Journal of Hymenoptera Research 89, pp. 61-71 : 61

Gilpinia lishui Li, Wang & Wei sp. nov.

Figs 1-12

Type locality.

China, Zhejiang, Lishui City, Jinyun County, Dayuan Town, Dayuan Village.

Type material examined.

Holotype, female, China: Zhejiang Province, Lishui City, Jinyun County, Dayuan Town, Dayuan Village, 28.612°N, 120. 309°E, alt. 273 m, 10 August 2021, leg. Ze-Jian Li, alcohol (LSAF21043). Paratypes, 4 females, same data as holotype.

Diagnosis.

The genus Gilpinia is similar to Macrodiprion in most external morphology characters, but there are clear differences in lancet structures. This new species resembles G. tohi Takeuchi, 1940 in external morphology and lancet characters together, but differs from the latter by the following characters: Lancet with 9 annuli (Fig. 9 ), annulus 1 about 1.2-1.3 × the length of annulus 2 at middle, the first annulus weakly curved and distinctly oblique (Fig. 10 ), distance between the lower end of the second annulus and apex of lancet about 1.6 × the height of the second annulus as measure perpendicular to the longitudinal axis of the lancet (Fig. 9 ), the serrulae 2-6 flat (Fig. 9 ); posterior margin of head and supraclypeal area white (Fig. 3 ), labrum yellow brown, clypeus black except for lateral corners white (Fig. 4 ); abdomen black, the first tergum largely white, the following 4 terga black with small lateral white maculae (Figs 1-2 ). G. lishui sp. nov. differs from Macrodiprion wui Xu, 1997, possibly a species of Gilpinia , by the posterior margin of head and supraclypeal area white; the apical half of pterostigma pale brown; the basal 7 flagellomeres yellow brown; the lancet with 9 annuli, the distance between the lower end of the second annulus and the apex of lancet 1.6 times the height of second annulus.

Description.

Holotype, female. Body length 10-10.5 mm, wingspan 19-20 mm (Figs 1-2 ).

Color. Body largely black, following parts yellowish white: supraclypeal area and toruli (Fig. 4 ), scape and pedicel (Fig. 6 ), apical 3/5 of postocellar area, posterior half of temple and of hind orbit (Fig. 3 ), a large triangular macula on mesepisternum (Fig. 5 ) and two large lateral maculae on mesoscutellum (Fig. 1 ), abdominal tergum 1 largely, antero-lateral stripe on recurved portions of terga 2-4, narrow anterior band wider laterally on terga 5-8, posterior margin of tergum 10, anterior 4/7 of sterna 3-7; mandibles reddish brown with black base; palp and labrum brown; narrow base of clypeus and dorsum of flagellomeres 1-7 pale brown; legs yellowish white, following parts black: fore coxa except for apex, middle and hind coxae except for apex and lateral macula, most of fore coxa, each femur except for dorsal stripe, apical 1/3 of hind tibia; apex of fore and middle tibiae and of each tarsomere brown. Wings hyaline, apex of cell R1 and posterior margin of fore wing infuscate, basal 2/5 and narrow margins of stigma black, apical 2/3 of stigma, veins R1 and most of vein A whitish, vein C pale brown, other veins blackish brown. (Figs 1-2 )

Punctation. Head and thorax densely punctured, miscrosculpture smooth, shiny, except as follows: labrum, temple, anterior part of clypeus and of supraclypeal area sparsely punctured, anterior part of parapsis, lower posterior corner of mesepisternum, anterior third and narrow posterior margin of mesepimeron smooth and strongly shiny; metapleuron and bottom of parapsis weakly striate microsculptured; abdomen strongly and densely striate microsculptured, almost matte, ovipositor sheath largely smooth and shiny.

Head. Hairs on dorsum of head slightly shorter than diameter of median ocellus, curved at apex; hairs on mesonotum very short and erect, and on mesopleuron very short. Anterior margin of clypeus shallowly and broadly incised, malar space as long as diameter of median ocellus, middle fovea distinct, distance between eye and torulus approximately 1.3 × distance between toruli (Fig. 4 ), postocellar area elevated with a shallow median furrow, approximately 2.5 × as broad as long, postocellar furrow clear, POL: OOL: OCL = 61: 48: 40 (Fig. 3 ). Antenna serrate with 22 distinct antennomeres, apex of terminal flagellomere obtuse and truncate, scape approximately 1.3 × as broad as long, pedicel approximately 0.5 × as broad ad long, antennomere 1 slightly broader than long, other antennomeres distinctly broader than long, ventral teeth of middle antennomeres clearly shorter than apical breadth of each antennomere (Fig. 6 ).

Thorax. Anterior margin of mesoscutellum almost truncate, slightly convex at middle, anterior margin of mesoscutellum approximately 1.5 × as broad as long; distance between cenchri equal to length of a cenchrus.

Abdomen. Ovipositor sheath in ventral view shown in Fig. 7 ; middle lobe of sternum 7 narrowly and deeply incised at middle, posterior margin of sternum 7 deeply incised submedially. Inner apical spur of hind tibia simple and approximately 0.8 × length of tarsomere 1; subapical tooth of claw short and remote from apical tooth (Fig. 8 ). Lancet with 9 distinct annuli, weakly narrowing from annulus 2 to 5 and then abruptly narrowed toward apex (Fig. 9 ); annulus 1 without serrula, about 1.2-1.3 × length of annulus 2 at middle, weakly curved and oblique, subparallel with annulus 2, distance between lower end of annulus 2 and apex of lancet about 1.6 × height of annulus 2 (Fig. 9 ); basal 1-3 annuli as shown in Fig. 10 , serrulae of annuli 2-6 flat, width of annulus 2 approximately 1.15 × width of annulus 3; lance in dorsal view as shown in Fig. 11 , auricular process large and triangular; lance in lateral view as shown in Fig. 12 .

Male. Unknown.

Variety.

In one specimen, the mesoscutellum has a uniformly white band with two lateral yellowish white maculae connected.

Host plants.

Unknown.

Distribution.

China (Zhejiang).

Etymology.

The specific epithet " Gilpinia lishui " is derived from the type locality, Lishui City, Zhejiang Province of East China.

Figures

Figures 1 - 12. Gilpinia lishui sp. nov., female, holotype 1 female adult, dorsal view 2 female adult, lateral view 3 head of female, dorsal view 4 head of female, anterior view 5 mesopleuron and metapleuron of female 6 antenna of female, lateral view 7 ovipositor sheath, ventral view 8 claw of hind leg, lateral view 9 lancet 10 the 1 - 3 annuli of lancet 11 lance, dorsal view 12 lance, lateral view. Scale bars: 2 mm (1, 2); 100 µm (9 - 12).