Ormosia (Oreophila) komazawai Kato & Kolcsar, 2022

Kato, Daichi, Watanabe, Kozo & Kolcsar, Levente-Peter, 2022, Japanese species of Ormosia Rondani (Diptera, Limoniidae): revision of the subgenera Oreophila Lackschewitz and Parormosia Alexander, ZooKeys 1132, pp. 127-162 : 127

publication ID

https://dx.doi.org/10.3897/zookeys.1132.86022

publication LSID

lsid:zoobank.org:pub:46E68453-A2FA-4D22-A0D7-4509DFFB7C1B

persistent identifier

https://treatment.plazi.org/id/60D987FD-CE30-4CC5-A590-638024C82CA9

taxon LSID

lsid:zoobank.org:act:60D987FD-CE30-4CC5-A590-638024C82CA9

treatment provided by

ZooKeys by Pensoft

scientific name

Ormosia (Oreophila) komazawai Kato & Kolcsar
status

sp. nov.

Ormosia (Oreophila) komazawai Kato & Kolcsar sp. nov.

Figs 1B View Figure 1 , 5A View Figure 5 , 6 View Figure 6 , 7 View Figure 7

Type material examined.

Holotype. ♂, pinned. Original label: "Hokkaido, Kucchan-chô-Iwaoto, tributary of Iou-gawa River; alt. 770 m; 42.88333°N, 140.65227°E; 6 Jul. 2015; M. Komazawa leg." BLKU. "HOLOTYPE Ormosia (Oreophila) komazawai Kato & Kolcsár, sp. nov. [red label]"; BLKU.

Paratype. Japan: [Hokkaido] • 2 ♂; same data as holotype • 2 ♂; same data as holotype except 5 Jul. 2016, BLKU • 1 ♂; same data as previous, except CKLP. • 1 ♂; same data, except 2 July 2022; CMK; M. Komazawa leg.; • 3 ♂ same data as previous, except CKLP; • 6 ♂ same data as previous, except BLKU.

Diagnosis.

General coloration yellow (Fig. 1B View Figure 1 , 6 View Figure 6 ). Vertex brown medially. Palpus 1-segmented. Antenna often brown on flagellum, very long, 1-1.4 × as long as body in male. Wing reduced, ~ 2/3 length of thorax. Legs ochreous, yellowish proximal to basal parts of femora. Male terminalia: tergite 9 bearing pair of small triangular lobes at caudal margin. Gonocoxite distinctly produced beyond base of clasper of gonostylus. Clasper of gonostylus slightly shorter than lobe of gonostylus, almost same width in whole length, ca. as wide as lobe of gonostylus. Interbases fused medially into roundish sac-like plate, without mesal-apical lobe. Female unknown.

Description.

Male. Body length 1.8-2.2 mm, wing length 0.6 mm.

Head: covered with yellow to brown setae. Vertex yellow, widely brown along medial longitudinal line (Fig. 6A View Figure 6 ), anterior part of vertex roundly convex (Figs 1B View Figure 1 , 6B View Figure 6 ). Eyes small and widely separated, 1/2 as wide as narrowest point of vertex, ~ 1/3 length of head including rostrum in dorsal view. Rostrum yellow, small, ~ 1/4 length of eye in lateral view. Palpus yellow, 1-segmented, roughly bacilliform, dilated distally, 1/4 length of head. Labellum yellow. Antenna very long, 1-1.4 × as long as body length (Fig. 6 View Figure 6 ), 15-segmented; scape yellow, 1.5-2 × as long as wide; pedicel yellow, oval, 1/2-2/3 length of scape; flagellomeres yellow to brown, slender cylindrical, each segment as long as scape + pedicel or slightly longer, distal segments shorter, apical segment 1/2-2/3 length of flagellomere 1; each flagellomere covered with abundant sensilla, and with 1-3 verticils present only on basal two flagellomeres, at most 1/5 as long as each segment.

Thorax: covered with yellow setae. Antepronotum yellow, postpronotum whitish. Mesonotum yellow, dorsoventrally flattened. Prescutal and tuberculate pits indistinct. Pleuron yellow. Wing greatly reduced, ~ 0.6 mm, 5-6 × as long as wide, ~ 2/3 length of thorax (Fig. 6B View Figure 6 ), dusky yellow, paler on basal part, covered with yellow setae. Veins vestigial except one stout vein, probably corresponding to vein R. Halter very slender, weakly dilated on knob, ~ 2/3 length of thorax. Legs with coxae and trochanters yellow, coxae relatively larger than those of non-flightless species; femora ochreous, basal parts more yellowish toward bases; tibiae and tarsi ochreous, sometimes slightly darker on distal one or two segments of tarsi (Figs 1B View Figure 1 , 6B View Figure 6 ).

Abdomen: yellow (Fig. 1B View Figure 1 ), pale brown on living and freshly killed specimens (Fig. 6 View Figure 6 ), densely covered with yellow setae.

Male terminalia (Fig. 7 View Figure 7 ): Tergite 9 with pair of small triangular lobe at caudal margin, less than 1/4 length of middle of tergite 9; anterior margin of tergite 9 deeply and widely notched; tergite 9 slightly wider than long including caudal lobe (Fig. 7A View Figure 7 ). Sternite 9 largely membranous on posteromedial part (Fig. 7B View Figure 7 ), anteromedial part convex ventrally in lateral view. Gonocoxite gradually narrowing towards tip, slightly longer than tergite 9, posteroventral margin distinctly and roundly produced beyond base of clasper of gonostylus, produced part ~ 1/2 length of clasper of gonostylus (Fig. 7A View Figure 7 ). Gonocoxal apodeme short, connected to anterolateral part of interbase (Fig. 7D View Figure 7 ). Clasper of gonostylus dark and scabrous, slightly shorter than lobe of gonostylus, almost same width in whole length, rounded at tip, weakly curved dorsally on distal part, ca. as wide as lobe of gonostylus in apical view (Fig. 7C View Figure 7 ). Lobe of gonostylus long finger-shaped, slightly curved, ~ 1/2 length of gonocoxite, distal part flattened (Fig. 7C View Figure 7 ). Interbases fused medially into roundish sac-like plate, ca. as long as wide in dorsal view, posterior margin almost straight or slightly concave, anterolateral part with short arm (Fig. 7D View Figure 7 ). Paramere roughly blade-shaped, ca. as long as interbase (Fig. 7D, E View Figure 7 ). Aedeagus dorsoventrally flattened, ~ 1/3 width of sac-like interbase or slightly wider, weakly constricted near middle in dorsal view, tip slightly beyond apex of interbase (Fig. 7D View Figure 7 ). Sperm pump angular in dorsal view (Fig. 7D View Figure 7 ), anterior end situated at basal 1/3 of paramere (Fig. 7D, E View Figure 7 ). Ejaculatory apodeme poorly developed (Fig. 7D, E View Figure 7 ).

Female. Unknown.

Etymology.

This spectacular and unique species is named in honor of its collector, Masaki Komazawa.

Habitat and biology.

Masaki Komazawa observed specimens walking on the surface of fallen leaves or on the surface of soil just after snow melt (Fig. 6A View Figure 6 ).

Distribution.

Japan (Hokkaido) (Fig. 5A View Figure 5 ).

Remarks.

The subapterous male of this species is unique in the subgenus, but brachypterous female is known in a Nearctic species, Ormosia (Oreophila) parviala Petersen & Gelhaus, 2004 ( Petersen et al. 2004). This species is similar to Ormosia (Oreophila) confluenta in terms of body coloration, Ormosia (Oreophila) longicornis Savchenko, 1980 ( Savchenko 1980) from Kazakhstan in terms of long antenna reaching (almost) apex of abdomen if bent backward, and Ormosia (Oreophila) bergrothi (Strobl, 1895) in terms of structure of male terminalia.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Limoniidae

Genus

Ormosia