Issikiomartyria trochos
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Ordo: Lepidoptera
Familia: Micropterigidae
Genus: Issikiomartyria
Name
Issikiomartyria trochos Imada & Kato, 2018 sp. n. – Wikispecies link – ZooBank link – Pensoft Profile
Material examined
Holotype: JAPAN [HONSHU] 1♂ collected by YI on 19.VI.2015 at Mahirudake-rindou (410 m), Nishiwaga-cho, Iwate Pref (Fig. 19:8), NMNS.
Paratypes: JAPAN [HONSHU] 3♂1♀ collected by YI on 19.VI.2015 at same as holotype locality, NMNS.
Additional materials: 1♂ collected by YI on 11.VI.2016 at Kodera-keikoku (580 m), Ohemachi, Yamagata Pref (Fig. 19:9), KUHE; 2♂ collected by YI on 12.VI.2016 at Aosawa Sakata-shi, tunnel (340 m), Yamagata Pref (Fig. 19:10), KUHE.
Type locality
Japan, Iwate Pref: Mahirudake-rindou (Honshu).
Diagnosis
Male tergum X with middle portion as large as lateral portions, lateral portions extending dorsally. Female corpus bursae with tiny sclerites on membrane surface near caudal end.
Description
Head dark brown, naked and glossy on both side, sparsely covered with yellow piliform scales with dark yellow scales on vertex. Antenna longer than forewing in male; with 62 (61–65) flagellomeres in males (n= 3). Labial palp 1-segmented. Forewing length 4.4 mm (4.2–4.7, n=8) in male.
Male abdomen and genitalia (Fig. 14). Mid-dorsal length of segment IX ring about 1/4 of ventral length. Valva with a proximo-ventral ridge; inner ventral margin broad without concavity. Aedeagus with two pairs of dorsal ridges: a pair of shorter distal fins and a pair of longer proximal fins oriented about proximal quarter of aedeagal length, extending upwards; with a pair of lateral triangular fins extending horizontally. Tergum X with developed medial part, as large as lateral portions; lateral portions expanded dorsally. Female abdomen and genitalia (Fig. 15). Segment IX forming a complete ring, strongly sclerotized; with a pair of dorso-lateral protrusions near base. Segment X consisting of a pair of lateral sclerites and a dorsal sclerotized plate; dorsal plate almost rectangular, slightly projected in middle. Corpus bursae large, globular, membranous, with long narrow neck region anteriorly; membrane surface with tiny sclerites scattered near caudal end; with signa composed of four saggitate sclerites near proximal end. Ductus spermathecae arising from a round concavity. Genital chamber smooth without sclerites, and a large fan-shaped sclerite ventrally.
Remarks
Issikiomartyria trochos sp. n. is most similar to I. catapasta sp. n. in that lateral parts of tergum X extending dorsally, but can be distinguished by the following traits: dorso- and latero-basal aedeagal fins separated from each other; female genital chamber without small sclerites; corpus bursae with tiny sclerites on membrane surface near caudal end.
Etymology
The specific name is a noun in apposition from the Greek word, “trochos” (wheel, disk), referring to the unusually extended form of tergum X of this species.
Distribution
This species has been found from the northern part of the main island of Japan (Honshu: Yamagata Pref.).
Bionomics
Larvae feed on the thalli of Conocephalum conicum. The habitat is a forest path along mountain streams of cool-temperate forests at 340–595 m, where Fagus crenata and Quercus crispula dominate.
Original Description
- Imada, Y; Kato, M; 2018: Descriptions of new species of Issikiomartyria (Lepidoptera, Micropterigidae) and a new genus Melinopteryx gen. n. with two new species from Japan Zoosystematics and Evolution, 94(2): 1-25. doi
Images
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![Figure 1. Habitus of adult males of Melinopteryx and Issikiomartyria. A: Melinopteryx coruscans sp. n. [holotype; MC 0204]; B: M. bilobata sp. n. [holotype: MC 0221]; C: Issikiomartyria hyperborea sp. n. [holotype: MC0252]; D: I. leptobelos sp. n. [MC 0250]; E: I. catapasta sp. n. [MC 0241]; F: I. trochos sp. n. [MC 0231]](/wiki/File:Zse-94-001-g001.jpg)
![Figure 14. Male genitalia of Issikiomartyria trochos sp. n. [holotype]. A: genitalia capsule, dorsal view; B: phallus, dorsal view; C: ditto, lateral view; D: left valva, inner view; E: genitalia capsule, lateral view; F: median plate. Scale bars: 0.2 mm.](/wiki/File:Zse-94-001-g014.jpg)
![Figure 15. Female genitalia of Issikiomartyria trochos sp. n. [paratype]. A: genitalia capsule, dorsal view; B: ditto, ventral view; C: female genitalia, lateral view; D: genital sclerite; E: arising part of ductus spermathecae, dorsal view. Scale bars: 0.2 mm. Abbreviation: scg = sclerotized granules of corpus bursae.](/wiki/File:Zse-94-001-g015.jpg)
![Figure 19. Locality records of micropterigid moths in the Northeastern Japan. Locality codes correspond to those in the text. Shaded are the areas higher than 1000 m elevation. Sampling records from Hashimoto (2006)[1] are indicated as outlined symbols.](/wiki/File:Zse-94-001-g019.jpg)
Other References
- ↑ Hashimoto S (2006) A taxonomic study of the family Micropterigidae (Lepidoptera, Micropterigoidea) of Japan, with the phylogenetic relationships among the Northern Hemisphere genera. Bulletin of the Kitakyushu Museum of Natural History and Human History Series A 4: 39–109.
