Asicimbex elminus Yan &amp; Yan &amp; Deng &amp; Wei 2022, comb. nov.
Creators: name: Yan, Yu-Chen
name: Yan, Wen-Long
name: Deng, Tie-Jun
name: Wei, Mei-Cai
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Hymenoptera
Cimbicidae
Asicimbex
Asicimbex elminus

description: Asicimbex elminus (Li &amp; Wu, 2003) comb. nov. Fig. 5 Agenocimbex elmina Li &amp; Wu, 2003, 39 (1): 103-104. Material examined. <i>Holotype</i>, female, China: Gansu Province, Tianshui City, 2 May 2000, leg. Xingyu Wu (NAFU). <i>Paratypes</i>, 1 female, same data as holotype (NAFU); 2 females, same data as holotype (ASMN). Diagnosis. This species is remote from other known species of the genus. It can be easily recognized by the following characters: the lateral margins of abdominal tergum 1 round, without distinct lateral carina (Fig. 5G, H), lateral area of tergum 1 with a distinct smooth and shiny patch; mesepisternum with an obscure middle transverse carina (Fig. 5B); the abdominal terga 3-5 with gradually elongated shiny yellow macula, the middle pale maculae on terga 6 and 7 less than 2 × as broad as long and much shorter than lateral blackened part; fore wing with a broad and distinct smoky apical macula; the mesoscutal middle and lateral lobes with small pale maculae, antennomere 3 distinctly shorter than longest axis of eyes. Description. <b>Holotype, female.</b> Body length 19 mm (Fig. 5A). <b> <i>Color</i>.</b> Head dark yellowish brown, lateral fovea, bottom of middle fovea, middle of frontal area and ocellar area black, clypeus yellowish brown (Fig. 5C, E); antennal flagellum reddish brown (Fig. 5D); thorax black (Fig. 5F), pronotum largely, tegula, narrow margins of mesoscutal middle lobe, small triangular maculae on inner side of lateral lobes, mesoscutellum and dorsum of metascutellum, posterior stripe of mesepisternum and of mesepimeron yellowish brown (Fig. 5B, F); abdomen black, both sides and connected posterior margin of abdominal tergum 1, a round macula on middle of tergum 6, a quadrate macula on terga 7 and 8 yellowish brown, a small macula on lateral of tergum 3, more than 1/4 of tergum 4 laterally, tergum 5 except for small middle macula, sides of abdominal sternites 2-6 bright yellow, middle of abdominal sternite blackish brown, terga 9-10 and ovipositor sheath reddish brown (Fig. 5G, H). Wings infuscate in anterior half and broad apical margin, veins and pterostigma yellowish brown, cells 2M, basal half of 3M, 1Cu, 2Cu, 2A largely and hind wing except for apical margin subhyaline (Fig. 5A). Legs yellowish brown, middle and hind coxae, trochanter and dorsal parts of femora blackish brown (Fig. 5H). <b> <i>Head</i>.</b> Dorsum of head with fine punctures, clypeus smooth (Fig. 5E); clypeus elevated, anterior margin with a roundish incision; labrum small and roundish at apex, longer than broad; malar space 2.3 × diameter of middle ocellus (Fig. 5E); postocellar area slightly elevated, 2 × broader than long, middle furrow weak; lateral furrows distinct, parallel to each other; POL: OOL: OCL = 4: 5: 6; head behind eyes weakly enlarged (Fig. 5C). Antenna 1.5 × head breadth, club 1.1 × length of antennomere 3, widest breadth 2.5 × apical breadth of antennomere 3 (Fig. 5D); antennomere 3 distinctly shorter than longest axis of eyes (32: 39). <b> <i>Thorax</i>.</b> Mesonotum densely punctured, with feeble luster; punctures on metapleuron above carina dense and small, interspace between punctures microsculptured, lower part of mesosternum densely punctured, oblique carina obtuse (Fig. 5B); mesoscutellum strongly elevated, without furrow, dorsum sparely punctured; distance between inner margin of cenchri 2.5 × the longest axis of a cenchrus; metascutellum not elevated in middle (Fig. 5F). <b> <i>Abdomen</i>.</b> Abdominal tergum 1 with minute punctures and microsculptures, shiny, both sides smooth; other terga finely and densely microsculptured, with feeble luster (Fig. 5G). Tergum 1 with obtuse and roundish lateral carina, posterior margin broadly and roundly incised, middle depth of incision about 0.6 × lateral length of tergum (Fig. 5G); middle process of sternum 7 narrow and triangular, basal breadth about 1/6 breadth of sternite 7; lance long and slender, subapical annuli clearly broadened, total length of annuli 6 × height of 13th annulus, first annulus 1.7 × as high as broad (Fig. 5I); lancet with 48 serrulae (Fig. 5J), middle serrulae weakly narrowed toward truncate apex, each side with 3-4 large subbasal teeth, distance between middle serrulae 2.3 × basal breadth of serrulae (Fig. 5L). <b>Male.</b> Unknown. Distribution. China (Gansu, Shanxi). Host plant. <i>Ulmus</i> spp. (Yang and Wu 1998; Wu et al. 2001). Discussion. Li and Wu (Li and Wu 2003) placed this species in <i>Agenocimbex</i>. The external structure, male genitalia and female lancet all support the species as a member of <i>Asicimbex</i>. So a new combination is proposed for the species. Yang and Wu (Yang and Wu 1998) recorded <i>Cimbex japonica</i> Kirby from middle Shanxi, China and reported the biology of the species in detail. However, the identification of the species was not correct. Based on the figure in the paper, the species is undoubtedly <i>Asicimbex elminus</i> (Li &amp; Wu, 2003).
description: Published as part of <i>Yan, Yu-Chen, Yan, Wen-Long, Deng, Tie-Jun &amp; Wei, Mei-Cai, 2022, Asicimbex Yan, Deng &amp; Wei, a new genus with eight new species and four new combinations (Hymenoptera, Cimbicidae), pp. 265-308 in Journal of Hymenoptera Research 91</i> on page 265, DOI: 10.3897/jhr.91.83710
description: {"references": ["Yang, Y, Wu, S, 1998. A Study on the Cimbicid Sawfly, Cimbex japonica (Hymenoptera Cimbicidae). Scientia Silvae Sinicae 34: 63 - 66", "Wu, X, Gao, X, Chen, D, Wang, W, 2001. Primary Research on Tianshui (Agenocimbex elmina Li et Wu). Journal of Northwest Forestry College 16: 50 - 51", "Li, M, Wu, X, 2003. A New Species of Agenocimbex (Hymenoptera: Cimbicidae) from Gansu China. Scientia Silvae Sinicae 39: 103 - 104"]}