Homoplectra inazui, Nozaki, 2025

Nozaki, Takao, 2025, Redescriptions of Homoplectra japonica (Banks 1906) and H. albomarginata (Ulmer 1907) (Trichoptera, Hydropsychidae), with descriptions of five new similar species from Japan, Zootaxa 5566 (2), pp. 303-328 : 322-326

publication ID

https://doi.org/10.11646/zootaxa.5566.2.4

publication LSID

lsid:zoobank.org:pub:9866D791-F9AA-4701-9EBC-B3A52613C657

DOI

https://doi.org/10.5281/zenodo.14718636

persistent identifier

https://treatment.plazi.org/id/03BD87A8-310D-FF86-FF2D-BFBDD2D025C9

treatment provided by

Plazi

scientific name

Homoplectra inazui
status

sp. nov.

Homoplectra inazui sp. nov.

( Figs 10 View FIGURE 10 , 13 View FIGURE 13 )

Diplectrona japonica View in CoL nec Banks 1906: Inazu and Nishida 2011, p. 191 (in part); Inazu 2012, p. 8; Inazu 2013, p. 72. Misidentifications.

Diagonosis. This species is similar to H. albomargnata in having a long scape of each antenna, but both male and female are distinguishable from those of the latter by the character states given in the diagnosis of H. albomarginata .

Description

Adult. General morphology and coloration similar to those of H. albomarginata including having long scape on each antenna, each scape 3–4 times as long as its pedicel, approximately same length as basal segment of flagellum, with long setae dorsally. Forewings each 9.0– 9.8 mm long in male (n = 10), 10.0–12.0 mm long in female (n = 10), 9.3 mm in male holotype.

Male genitalia ( Figs 10A–10F View FIGURE 10 ). Ventrolateral sides of synsclerotized segment IX triangular anteriorly in lateral aspect ( Fig. 10A View FIGURE 10 ); posteroventral lobe almost square with median apical concavity and acute apicolateral corners in ventral aspect ( Fig. 10C View FIGURE 10 ); dorsal part of segment IX trapezoidal in dorsal aspect ( Fig. 10B View FIGURE 10 ); fused with segment X laterally ( Figs 10A View FIGURE 10 ). Segment X very wide in dorsal aspect, with pair of fin-like dorsolateral projections, pair of posterolateral setose areas protruding posterad ( Figs 10A, 10B View FIGURE 10 ); pair of posterior processes lacking. Genital chamber with or without pair of short slender inner processes ( Fig. 10A View FIGURE 10 ), processes rarely long ( Fig. 10F View FIGURE 10 ); pair of lateral strips weakly sclerotized ( Fig. 10A View FIGURE 10 ). Inferior appendages without distal segment, long, finger-like and very slightly upturned in lateral aspect ( Fig. 10A View FIGURE 10 ), extending beyond apex of segment X, each with apex round, with many short spine-like setae subapicomesally ( Figs 10A View FIGURE 10 inset, 10C). Phallotheca strongly bent posteroventrad, with long dorsal process acute apically ( Figs 10D, 10E View FIGURE 10 ); pair of ventral processes 2/3 to 3/4 length as dorsal process, acute apically, slightly thicker subapically ( Figs 10D, 10E View FIGURE 10 ). Aedeagus evenly curved ventrad, but apex curved dorsad ( Fig. 10D View FIGURE 10 ); head short, less than 1/10 as long as stem; stem half-pipe-like, with broad lateral flanges ( Figs 10D, 10E View FIGURE 10 ).

Female genitalia ( Figs 10G–10I View FIGURE 10 ). Lateral lobes of segment VIII widely separated from each other in ventral aspect ( Fig. 10I View FIGURE 10 ), their mesal margins weakly concave. Segment IX quadrate in lateral aspect ( Fig. 10G View FIGURE 10 ), pentagonal in dorsal aspect ( Fig. 10H View FIGURE 10 ), with transverse sulcus dorsally on posterior 1/3–1/4; pair of sclerotized ribs forming angular ridges on vulvar scale basolaterally in ventral aspect ( Fig. 10I View FIGURE 10 ); mesal lobe weakly sclerotized, semicircular in lateral aspect ( Fig. 10G View FIGURE 10 ). Vulvar scale large, tongue-like, membranous posteriorly; with pair of deep holes basolaterally in ventral aspect. Vaginal apparatus bulb-shaped anteriorly in dorsal aspect ( Fig. 10H View FIGURE 10 ), rectangular posteriorly; posterodorsal part mostly semi-membranous; longitudinal dorsal ridges divergent anteriorly, opening of duct of spermatheca completely surrounded by dark oval mark in dorsal aspect.

Immature stages. Unknown.

Holotype. Male (in alcohol): Uwano, Yado , Muraoka-ku , Kami-cho , Hyogo, 35.4315°N, 134.5819°E, alt. 600 m, 14.v.2006, K. Inazu ( KPM-NK TN00690 ) GoogleMaps

Paratypes. 3 males, 2 females, same locality as holotype, 5.v.2004, K. Inazu ( KPM-NK TN00700 , KPM-NK TN00710 ) GoogleMaps ; 3 males, Soryuno-taki, Itashino , Muraoka-ku , Kami-cho , alt. 600m, 28.v.2005, K. Inazu ( KPM-NK TN00720 ) ; 1 male, Torokawa-daki , Itashino , Muraoka-ku , Kami-cho , 28.v.2005, alt. 900 m, K. Inazu ( KPM-NK TN00730 ) .

Other specimens examined. JAPAN: HONSHU: Hyogo: 1 female, Hattanno-taki, Niiya, Ojiro-ku, Kami-cho, alt. 750 m, 4.vi.2006, K. Inazu; 1 male, Myoken-zan, Ishihara, Yoka-cho, Yabu-shi, alt. 700 m, 9.v.2004, K. Inazu ( KI); 1 male, Betsugu, Sekinomiya, Yabu-shi, alt. 700 m. 3.v.2007, K. Inazu ( KI); 1 male, same locality, 5.v.2010, K. Inazu ( KI); 1 female, Hachibuse-kogen, Sekimiya-cho, Yabu-shi, 18.v.2009, K. Inazu; 1 male, 2 females, Takenocho-mihara, Toyooka-shi, alt. 420 m, 11.v.2007, K. Inazu ( KI); 1 female, same locality, 1.vi.2007, K. Inazu ( KI); 1 male, same locality, 14.v.2013, K. Inazu ( KI); 1 female, Mihara-oku, Takeno-cho, Toyooka-shi, 29.v.2009, K. Inazu; 1 male, 1 female, Inab, Hidakacho, Toyooka-shi, alt. 600 m, 29.iv.2003, K. Inazu; 1 male, same locality, 25.iv.2004, K. Inazu ( KI); 1 male, Sugawara, Shinonsen-cho, alt. 500 m, 30.v.2004, K. Inazu ( KI); 1 male, 3 females, Koke-daki, Sugawara, Shinonsen-cho, alt. 800 m, 8.vi.2003, K. Inazu; 3 males, 1 female, same locality, 30.v.2004, K. Inazu ( KI).

Etymology. This species is dedicated to Mr Kazuyuki Inazu, who provided me with many valuable specimens including this species.

Distribution. Central Honshu.

Biology. Type series specimens of this species were collected near small streams or falls in mountainous areas ( Inazu 2013).

Japanese name. Inazu-kimadara-shima-tobikera.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Trichoptera

Family

Hydropsychidae

Genus

Homoplectra

Loc

Homoplectra inazui

Nozaki, Takao 2025
2025
Loc

Diplectrona japonica

Inazu, K. 2013: 72
Inazu, K. 2012: 8
Inazu, K. & Nishida, A. 2011: 191
2011
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