Aphelopus zaifui Olmi, Chen & Liu, 2022

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, European Journal of Taxonomy 794 (1), pp. 40-71 : 53-56

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

Figures

Fig. 7. Aphelopus zaifui Olmi, Chen & Liu sp. nov. A–E. Holotype, ♂ (SCAU 3042343). A. Habitus, dorsal view. B. Mesosoma, dorsal view. C. Head, dorsal view. D. Head, frontal view. E. Head and mesosoma, lateral view. F. Paratype, ♂ (SCAU 3042339), mesosoma, dorsal view.

Fig. 8. Male genitalia: A. Aphelopus incognitus Chen, Olmi & Guglielmino sp. nov., ♂, holotype. B. Aphelopus maculiala Olmi, Chen & Ødegaard sp. nov., ♂, holotype. C. Aphelopus taianensis Olmi, Ødegaard & Chen sp. nov., ♂, holotype. D. Aphelopus zaifui Olmi, Chen & Liu sp. nov., ♂, paratype. E. Aphelopus spadiceus Xu & He, ♂ from China, Sichuan, Wolong. F. Aphelopus serratus Richards, 1939, ♂ from Leicester (England, UK). Right half removed.