Zavreliella inawaheia Sasa, Kitami & Suzuki, 2001

Cao, Yanmin & Tang, Hongqu, 2017, Taxonomic Review of Zavreliella Kieffer from East Asia, Zoological studies (Zool. Stud.) 56 (5), pp. 1-10 : 5-7

Zavreliella inawaheia Sasa, Kitami & Suzuki, 2001

( Figs. 17-19, 20 )

Zavreliella sp. “inawaheia”, Sasa, Kitami & Suzuki, 2000: 13.

Zavreliella inawaheia, Sasa, Kitami and Suzuki, 2001: 12 ; Yamamoto & Yamamoto, 2014: 343 (misspelled as inwaheia).

Diagnosis: Z. inawaheia differs from its congeners by the following combination: dark saddle-shaped markings on T II-VI; the insertion of 2 inner long setae of superior volsella more distally; apex of inferior volsella with a shallow cleft.

Redescription: Male (n = 1) ( Figs. 17-19 , Table 2 ). Total length 3.5 mm. Wing length 1.8 mm. Total length/wing length 2.0.

Coloration: Color pattern of legs and wing similar to previous species, abdomen terga II-VI also with distinct median dark markings in which numerous dark long setae are situated.

Head: Temporals 11, uniserial, including 5 inner and 6 outer verticals. Antenna with subapical seta, 15 µm long, AR 1.4, terminal flagellomere 657 µm long. Clypeus with 26 setae. Lengths of palpomeres 1-5 (in µm): 30, 38, 28, 195, 150, third palpomere with 6 strong setae.

Thorax: Antepronotums 0; acrostichals 10; dorsocentrals 10; prealars 4. Scutellum with 9

setae, 4 of which are short.

Wings. VR 1.4. Brachiolum with 1 seta; R with 16, R 1 with 13-15, R 4+5 with 28-32 setae.

Legs: Apex of fore tibia with an arcuate curved spur, 45 µm long; spur on mid-tibia 70 µm long, inner basal portion with 4-6 furrows; spur on hind tibia 110 µm long, inner basal portion with 6-8 teeth. Lengths (in µm) and proportions of legs in table 2.

Abdomen: T II-VI each with a medial bundle bearing strong dark setae, the seta number of each segment: 14, 16, 26, 14, and 11, TVII without distinct marking, with 4-5 dark long setae.

Hypopygium ( Figs. 17, 20 ): Anal tergite band present. Median anal tergite with 8 setae on each side, posterior margin of T IX with 5 setae per side dorsally. Anal point nearly parallel-sided and slightly rounded distally, 45 µm long. Superior volsella ( Fig. 18 ) broadly digitiform, 35 μm long, with 4 dorsolateral setae on its basal 1/2 and 2 long ventromedian setae on its subapical portion of inner margin. Basal lateral lobe present, clearly microtrichiose. Inferior volsella ( Fig. 19 ) with a shallow notch and 3-4 strong setae apically. HR 1.5, HV 3.5.

Material examined: Holotype. male of Z. inawaheia (NSMT-I-Dip 5371 (No. 401: 015), JAPAN: Fukushima Prefecture, Lake Inawashiro, 06-vii-2000, coll. K Kitami.

Distribution: Japan (Fukushima Prefecture)

Remarks: The condition of the holotype is not so good; air bubbles and crystallization of mounting medium made it difficult to observe the wing pattern and the color pattern of abdomen. The fore- and middle tarsi are lost.

The species belongs to the Z. marmorata group, as the male has a flat microtrichiose lateral lobe in the superior volsella, and a shallow notch in the inferior volsellae. Yamamoto and Yamamoto (2014) pointed out that the species may be a junior synonym of Z. marmorata (Wulp) if observed correctly from the lateral view, but the male is distinct in having the apical cleft in the apex of inferior volsella. In Z. marmorata , the inferior volsella possesses a longitudinal suture laterally ( Reiss 1990).

Figures

Figs. 17-21. 17-20 Zavreliella inawaheia Sasa, Kitami & Suzuki, 2001, male. 17 hypopygium 18 details of superior volsella 19 details of inferior volsella 20 color photograph of hypopygium. 21 Zavreliella shidai sp. n. color photograph of male hypopygium.