Aphelopus zaifui Olmi, Chen & Liu 2022, sp. nov.
Creators: name: Olmi, Massimo
name: Chen, Hua-Yan
name: Guglielmino, Adalgisa
name: Ødegaard, Frode
name: Vollaro, Massimo
name: Capradossi, Leonardo
name: Liu, Jing-Xian
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Dryinidae
Aphelopus
Aphelopus zaifui

description: Aphelopus zaifui Olmi, Chen & Liu sp. nov.
urn:lsid:zoobank.org:act: 730357C7-2449-42BE-99A6-6DBFFE97DC67
Figs 7, 8D
Diagnosis
Male with head black, except mandible testaceous; notauli complete (Fig. 7B) or almost complete (Fig. 7F), posteriorly separated; distivolsella in the form of a long straight rod (Fig. 8D); basivolsella long and narrow, with distal apex very widened (Fig. 8D).
Etymology
The species is named after the late Prof. Zaifu Xu (SCAU), a famous specialist of Chinese Dryinidae.
Material examined
Holotype CHINA • ♂; Yunnan, Dali, Yunlong County, Tianchi; 25.854158° N, 99.239927° E; 2933 m a.s.l., 14–28 Jun. 2020; You-Jing Gong leg.; MT; SCAU 3042343 (SYSBM).
Paratypes CHINA • 1 ♂; Yunnan, Dali, Mt Cangshan; 25°41′16″ N, 100°8′33″ E; 25 May 2009; Jie Zeng leg.; SCAU 3040717 (SYSBM) • 1 ♂; Dali Dist., Mt Cangshan, 25.66723° N, 100.14762° E; 2300 m a.s.l.; 31 May 2020; MT; SCAU 3042339 (SYSBM).
Description
Male
Fully winged (Fig. 7A); length 2.0 mm. Head black, except mandible testaceous; antenna brown-black; mesosoma and metasoma black; fore and mid leg yellow, except club of femur brown; hind leg yellow, except part of coxa, club of femur and tibia brown. Antenna filiform, with setae about as long as breadth of antennomeres; antennomeres in following proportions: 5:5:5:6:6:7:7:7:7:10; length/breadth ratio of ninth antennomere: 7:2. Head (Fig. 7C–D) dull, granulate; frontal line incomplete, present only in anterior half of frons; POL = 5; OL = 3; OOL = 3; OPL = 2; TL = 3; greatest breadth of lateral ocelli about as long as OPL; occipital carina complete. Mesoscutum (Figs 7B, F) dull, granulate. Notauli complete (Fig. 7B) or nearly complete (Fig. 7F), posteriorly separated; minimum distance between notauli slightly shorter than POL (4:5). Mesoscutellum shiny, very slightly granulate. Mesopleuron and metapleuron shiny, unsculptured. Metanotum shiny, unsculptured. Metapectal-propodeal disc reticulate rugose; propodeal declivity with two longitudinal keels and median area shiny, unsculptured. Fore wing hyaline, without dark transverse bands. Distivolsella in form of long straight rod (Fig. 8D); basivolsella long and narrow, with two medial bristles and distal apex very widened (Fig. 8D); distal apex of aedeagus not tridentate (Fig. 8D). Tibial spurs 1/1/2.
Female
Unknown.
Remarks
The distivolsella in the form of a long straight rod indicates that the new species is different from all known Aphelopus species, except A. serratus Richards, 1939, from the Palaearctic region. However, in A. zaifui Olmi, Chen & Liu sp. nov. the basivolsella has a widened apex (Fig. 8D), whereas in A. serratus it has a slender apex (Fig. 8F). Following the description of A. zaifui Olmi, Chen & Liu sp. nov., the key to males of Oriental Aphelopus published by Xu et al. (2013) should be modified by replacing couplet 1 as follows:
1. Distivolsella in the form of a long straight rod (Fig. 8D); basivolsella long and narrow, with distal apex very widened (Fig. 8D) ..................................................... A. zaifui Olmi, Chen & Liu sp. nov.
– Distivolsella and basivolsella with different shape (Fig. 8A–B) ..................................................... 1’
1’. Mesosoma and metasoma totally testaceous, except petiole black ........... A. borneanus Olmi, 1984
– Mesosoma and metasoma partly or totally black or brown .............................................................. 2
description: Published as part of Olmi, Massimo, Chen, Hua-Yan, Guglielmino, Adalgisa, Ødegaard, Frode, Vollaro, Massimo, Capradossi, Leonardo & Liu, Jing-Xian, 2022, DNA barcoding of Aphelopus Dalman (Hymenoptera, Dryinidae) from China, with descriptions of four new species, pp. 40-71 in European Journal of Taxonomy 794 (1) on pages 53-56, DOI: 10.5852/ejt.2022.794.1653, http://zenodo.org/record/6078154