Phytoliriomyza tsukuyomi Kato, 2022
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publication ID |
https://dx.doi.org/10.3897/zookeys.1133.94530 |
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publication LSID |
lsid:zoobank.org:pub:D7A37FE0-DC2A-4ECC-A6A1-0E873C7C7A5A |
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persistent identifier |
https://treatment.plazi.org/id/B0DF693B-ABD0-45C9-B129-AB3D75DB681E |
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taxon LSID |
lsid:zoobank.org:act:B0DF693B-ABD0-45C9-B129-AB3D75DB681E |
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treatment provided by |
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scientific name |
Phytoliriomyza tsukuyomi Kato |
| status |
sp. nov. |
3. Phytoliriomyza tsukuyomi Kato sp. nov.
Fig. 5 View Figure 5
Material examined.
Holotype: Japan: 1♂ (MK-AG-a397), Matsubara-ko, Koumi, Nagano Pref. (36.053896°N, 138.461847°E, 1110 m asl), 12-V-2021 (as larva), emerged on 18-VI-2021, NSMT-I-Dip 31897. Paratypes: Japan: 1♂1♀ (MK-AG-a455, a443), same data as holotype, emerged on 17-22-VI-2021, NSMT-I-Dip 31898, 31899; 1♂1♀ (MK-AG-a521, a528), Ikawa-toge, Aoi-ku, Shisuoka Pref., 26-V-2021 (as larva), emerged on 31-V-2-VI-2021, NSMT-I-Dip 31900, 31901; 1♂ (MK-AG-a577), Tokuzo-ji, Yana, Kisarazu, Chiba Pref., 1-XI-2021 (as larva), emerged on 3-XII-2021, NSMT-I-Dip 31902.
Other material.
Japan: 1♂1♀, Ikawa-toge, Aoi-ku, Shizuoka Pref., 26-V-2021 (as larva), emerged on 31-V-2-VI-2021; 1♂, Tokuzo-ji, Yana, Kisarazu, Chiba Pref., I-XI-2021 (as larva), emerged on 3-XII-2021.
Diagnosis.
A medium-sized species (wing length 1.6-1.7 mm) having pruinose dark gray scutum, light yellow scutellum, black 1st flagellomere, dark maxillary palpus, dark halteres, and dark legs. Male epandrium inner-basally with a comb of four unfused tubercle-like setae, and inner-laterally with a comb of three or four fused, long, tubercle-like setae; surstylus bilobed and hypertrophied dorsal arm with one tubercle-like seta. Larva mines the thallus of Marchantia polymorpha .
Description.
Adult male (Fig. 5A-E View Figure 5 ).
Head: Head light yellow, with ocellar tubercle brown, frons light yellow, back of head dark brown (Fig. 5C View Figure 5 ). Antenna porrect, first flagellomere black, pedicel and scape light yellow. Arista subbasal, black, pubescent. Clypeus, face, gena, parafacial and postgena yellow. Proboscis normal, yellow; palpus brownish gray, cylindrical. Chaetotaxy: Front orbitals three pairs; one ori directed inward; two ors directed upward (Fig. 5D View Figure 5 ). Orbital setulae minute and erect, in a single row.
Thorax: Thorax pruinose. Scutum pruinose bluish gray with a medial black band and a pair of lateral black bands (Fig. 5D View Figure 5 ). Scutellum pale yellow with lateral corner dark brown. Subscutellum dark brown with anterior margin pale yellow. Mediotergite, anatergite, and katatergite brown. Pleuron largely yellow; postpronotal lobe with anterior brown spot; notopleuron with brown spot on venter; anepisternum and anepimeron with brown venters; katepisternum an meron with dark brown patches on venter (Fig. 5B View Figure 5 ). Haltere gray, with grayish yellow stalk. Calypter margin and hairs gray. Leg segments brownish gray; tarsus darker. Chaetotaxy: Scutum with 1+3 dorsocentrals, shortened anteriorly (Fig. 5D View Figure 5 ). Acrostichal setulae six or seven pairs in two rows. Wing: Wing length 1.7 mm, costa reaching M1 (Fig. 5A View Figure 5 ). Length of ultimate section of vein M4 divided by penultimate section 1.9.
Abdomen: Abdomen dorsally subshiny brown; epandrium dark brown (Fig. 5E View Figure 5 ). Genitalia: (Fig. 5G-J View Figure 5 ) Epandrium rounded apically; inner-lateral margin with a large round arm having three or four unfused tubercle-like setae apically; inner-anterior surface with a large arm having a hand-shaped comb comprising four basally fused long tubercle-like setae apically, and one tubercle-like seta immediately inward from the protrusion (Fig. 5I View Figure 5 ). Surstylus lobate, setose apically; inner-basally with a long, S-curved, hypertrophied, columnar arm, bearing one long tubercle-like seta apically (Fig. 5I View Figure 5 ). Cercus narrow, setose, with a strong seta apically (Fig. 5I View Figure 5 ). Subepandrial sclerite consisting of one pair of lateral plates (one seta each subapically on inner surface) forming (Fig. 5I View Figure 5 ). Hypandrium slightly sclerotized along outer margin (Fig. 5G View Figure 5 ). Postgonite bare, goose barnacle-shaped and cleft apically; upper lobe pointed apically (Fig. 5H View Figure 5 ). Phallophorus with deep incision below (Fig. 5G View Figure 5 ), articulated with phallapodeme, fused to epiphallus (Fig. 5H View Figure 5 ). Basiphallus with a narrow plate on left side; dorsally lightly sclerotized; shorter than mesophallus. Hypophallus broad, membranous, ventral side covered with microtrichia, medially with a pair of short fused linear sclerites (Fig. 5G, H View Figure 5 ). Paraphalli lobe-like, membranous; posterior margin slightly sclerotized (Fig. 5G, H View Figure 5 ). Mesophallus dark, cylindrical, widest subbasally, slightly longer than distiphallus (Fig. 5H View Figure 5 ). Distiphallus comprising one pair of stout tubules; basal half composed of ventral dark triangular sclerite and weaker medial region; distal half cylindrical, dorsally pigmented, with truncated, unpigmented apex (Fig. 5H View Figure 5 ). Ejaculatory apodeme fan-shaped, blade pale with clear margin, with sclerotized stalk, broad asymmetric base, and clear sperm pump (Fig. 5J View Figure 5 ).
Female (Fig. 5F-I View Figure 5 ). Similar to male, but slightly larger and frons narrower (Fig. 5F View Figure 5 ). Wing length 1.7 mm. Postabdomen: (Fig. 5K, L View Figure 5 ) Oviscape dark brown, setigerous (Fig. 5K View Figure 5 ). Tergite 10 cruciform, laterally uniting narrow pleural sclerites (Fig. 5L View Figure 5 ). Each cercus with two stout, apical, trichoid sensilla, 1/3 length of cercus. Spermathecae orbicular (Fig. 5K View Figure 5 ).
Etymology.
The specific name tsukuyomi is a Japanese word meaning brightness of moonlight, and refers to the bright yellow scutellum.
Japanese name.
Tsukuyomi-zenigoke-hamoguribae.
Host plant.
Marchantia polymorpha ( Marchantiaceae ).
Mine.
Larvae mine the thallus of the host plant and pupate in the mines. The mines are not apparent from the outside.
Biological notes.
The host plants from which this species emerged, grow on mesic soils on levee of paddy fields and along roads in natural beech forests (Fig. 5T View Figure 5 ). Our rearing records suggest that this species is univoltine, and that adults emerge from overwintered pupae in spring.
Distribution.
Japan: Honshu (Fig. 2 View Figure 2 ).
Remarks.
This species resembles P. alpicola in color pattern of the scutum (entirely dark mesothorax and uniformly pale scutellum); it is distinguished from the latter by the yellow pedicel and scape of the antenna (pedicel and scape of P. alpicola are brown), yellow maxillary palpus (dark gray in P. alpicola ), and number and arrangement of tubercle-like setae in a comb on the male epandrium (4 hand-shaped in P. tsukuyomi ; 6 fused in P. alpicola ).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.