Bruggmanniella sanlianensis, Lin & Yang & Tokuda, 2020

Lin, Sheng-Feng, Yang, Man-Miao & Tokuda, Makoto, 2020, Molecular Phylogeny Revealing the Single Origin of - associated (Diptera: Cecidomyiidae) in Asia, with Descriptions of Three New and One Newly Recorded Species from Taiwan., Zoological Studies 59 (66), pp. 1-16 : 7-9

Bruggmanniella sanlianensis sp. nov. Lin, Yang and Tokuda ( Figs. 4 , 5C , 6C, F ; Table 4) urn:lsid:zoobank.org:act:9F8D07AA-13AF-4335-BCA9-822D12240DF4

Type material: Holotype. Male (on slide, NCHU), TAIWAN: Taichung City, Shalian Ln , adult emerged on 15.v.2017 and reared from collected galls on 4.v.2017, S.F. Lin leg. Paratypes. TAIWAN: 3ò 3ñ (on slides, NCHU), data are same as holotype; 1ò 1ñ (on slide, NCHU) Taichung City, Shalian Ln, adult emerged on 5.v.2016 and reared from collected galls on 25.iv.2017, S.F. Lin leg. ( NCHU); 5 larvae, 2 pupa, 7 pupal exuviae (on slides, NCHU) Taichung City, Shalian Ln, 1.iv.2018, S.F. Lin leg.; 2 larvae (on slides, NCHU), Taichung City, Shalian Ln, 25.iv.2017, S.F. Lin leg.

Etymology: The species name is derived from the type locality, Sanlian Ln. ost. Cinnamomum osmophloeum Kaneh is an endemic plant species to Taiwan.

Gall: Tear-shaped and single-chambered gall on leaf veins ( Fig. 1D ), 2–3 mm long and 1–2 mm wide. Possibly 1–20 galls occur on one leaf.

Distribution: Mountain areas of Taiwan.

Life history: This gall midge is univoltine. Immature larvae are found in the galls from December to the following March. Mature larvae are found in April and pupate from middle to late April and adults emerged in early May.

Adult: Head. Frontoclypeal setal counts as in table 4; palpus as in figure 4A, first segment round, second to fourth gradually becoming longer. Thorax. First tarsomere as in figure 4D; thoracic setal and scale counts as in table 4; empodia equal length to claws in male and shorter than claws in female ( Fig. 4E, F ); wing 2.2–2.4 mm long in male (n = 5) and 2.2–2.7 mm (n = 4) in female ( Fig. 4G, H ). Otherwise as in B. turoguei . Male abdomen. Terminalia ( Fig. 5C ): hypoproct entire or slightly emarginated, slightly shorter than cerci; gonostylus distally with a bidentate tooth. Female abdomen. Seventh sternite 365–410 μm long (n = 4), 2.5–3.0 times as long as sixth sternite; needle part of ovipositor 0.64–0.74 mm long, 1.8 times as long as seventh sternite. Otherwise as in B. turoguei .

Pupa: Body length 1.5–1.8 mm. Antennal horn 260–290 µm long ( Fig. 6C ), anteriorly narrowed, posterolaterally with small lobe; cephalic setae 50–60 µm long; frons without horns; prothoracic spiracle 150–160 µm long; spiracles on second to sixth abdominal segments 30–35 µm long; second to seventh cover with six to eight and eighth cover with two to four transverse rows spines. Otherwise as in B. turoguei .

Full growth larva: Body length 1.2–1.6 mm. Sternal spatula 200–225 µm long, anteriorly with two angular lobes; four lateral papillae and one sternal papillae of each sides on all thoracic segments, each with seta ( Fig. 6F ). Otherwise as in B. turoguei sp. nov.

Figures

Fig. 4. Bruggmanniella sanlianensis sp. nov. (A) Male head (ventral view) (B) Male antenna (8–12 segment). (C) Female antenna (8–12 segment). (D) Male 1st tarsomere. (E) Male 5th tarsomere. (F) Female 5th tarsomere. (G) Male wing. (H) Female wing. Scale bars: A–C = 0.03 mm; D–F = 0.1 mm; G–H = 1 mm.

Fig. 5. Male genitalia of Taiwanese Cinnamomum–associated Bruggmanniella. (A) Bruggmanniella turoguei sp. nov., (B) B. shianguei sp. nov., and (C) B. sanlianensis sp. nov. Scale bar = 0.1 mm.

Fig. 6. Taiwanese Cinnamomum–associated Bruggmanniella. Bruggmanniella turoguei sp. nov. (A, D), B. shianguei sp. nov. (B, E), B. sanlianensis sp. nov. (C, F). Scale bars: pupal head (A–C) = 0.5 mm and for larval sternal spatula (D–F) = 0.1 mm. Larval lateral papillae shown in dotted blue circles.

Fig. 1. Plant galls induced by Taiwanese Bruggmanniella species on Cinnamomum species. (A) Stem galls on C. insularimontanum. (B) Stem galls on C. subavenium. (C) Stem galls on C. osmophloeum. (D) Leaf galls on C. osmophloeum.