A new genus of the subfamily Hybrizontinae (Hymenoptera: Ichneumonidae) from Japan Author Hisasue, Yu Author Konishi, Kazuhiko text Zootaxa 2019 2019-09-03 4664 2 241 250 journal article 25619 10.11646/zootaxa.4664.2.6 f9bd2276-e9f7-4173-acea-b5341cf3f62c 1175-5326 3385635 AE9CF31B-7E1E-4E0D-B101-BA71A2BDEB48 Neohybrizon mutus Hisasue & Konishi , sp. nov. Gen. sp. Komatsu & Konishi, 2010: 575 . Material examined . Holotype , ♀ , Hitsujigaoka ( 43.00°N / 141.24°E ), Sapporo , Hokkaido , Japan , 6–13.viii.2003 ( K. Konishi ), MT , EUMJ . Paratypes : [ Hokkaido ] 1♀ ( 9–22. viii. 2002 ), 4♀ ( 6–13. viii. 2003 ), 14♀ ( 13–20. viii. 2003 ), 1♀ ( 27. viii–3.ix. 2003 ), 1♀ ( 19–26.vii.2007 ), 3♀ ( 26.vii–2.viii.2007 ), 7♀ ( 2–9.viii.2007 )& 4♀ ( 9–16.viii.2007 ), 43°00’N / 141.24°E , Hitsujigaoka , Sapporo ( K. Konishi ), MT , EUMJ , ZI ; 5♀ ( 7–14. viii. 2009 ), 5♀ ( 14–21. viii. 2009 ), 3♀ ( 21–28. viii. 2009 ), 1♀ ( 28. viii–4. ix. 2009 ) & 1♀ ( 11–18. ix. 2009 ), 43°00’09”N / 141°24’56”E , Hitsujigaoka , Sapporo ( K. Konishi ), MT , EUMJ ; 2♀ ( 1–8. viii. 2012 ), 1♀ ( 15–22. viii. 2012 ), 2♀ ( 25. vii–1. viii. 2012 ), 3♀ ( 8–15. viii.2012 ) & 1♀ ( 22–29. viii. 2012 ), 43°00’24”N / 141°24’52”E , Hitsujigaoka , Sapporo ( K. Konishi ), MT , EUMJ ; 8♀ ( 18–26. viii. 1998 , K. Mizota et al .) & 3♀ ( 4–18. viii. 2001 , 42°58’N / 141°12’E , T. Yoshida ), Hyakumatsu-zawa, Sapporo , MT , BMNH , SEHU ; 6♀ ( 24. viii–7. ix. 1993 , N. Kuhara , EUMJ ), 2♀ ( 1–8. viii. 2000 , K. Uesugi , SEHU ), 12♀ ( 1–8. viii. 2000 , K. Uesugi , SEHU ) & 8♀ ( 7. viii–13. ix. 2002 , stream side , 42°58’N / 141°15’E , T. Yoshida , SEHU ), MT , Kannon-zawa, Sapporo ; 8♀ , Misumai ( small stream ), Sapporo , 27. vii–13. viii. 1994 ( N. Kuhara , MT ), EUMJ ; 1♀ ( 24–31. viii. 2001 , H. Sugaya , FIT ) & 1♀ ( 7. vii. 2002 , 42°57’N / 141°14’E , T. Yoshida ), Mt. Hakken-zan , Sapporo, SEHU ; 9♀ ( 7. viii. 1999 ), 11♀ ( 14. viii. 1999 ), 1♀ ( 21. viii. 1999 ) & 1♀ ( 28. viii. 1999 ), Mt. Maruyama ( 50 m ), Sapporo ( K. Mizota et al .), MT , SEHU ; 1♀ , Mt. Okuteine-yama ( 43°04’N / 141°08’E ), Sapporo , 3–17. vii. 2011 ( R. Takayanagi , MT ), SEHU ; 3♀ ( 27. vii–21. viii. 2007 , Natural forest , 42°54’N / 141°16’E ) , 11♀ ( 27. vii–21. viii. 2007 , Selectively cut forest , 42°54’N / 141°16’E ) & 3♀ ( 27. vii–21. viii. 2007 , Natural forest , 42°56’N / 141°16’E ), Mt. Soranuma-dake , Sapporo ( A. Ueda ), MT , AEI, EUMJ ; 1♀ , Nakayama-toge , Sapporo , 4. ix. 2003 ( T. Yoshida ), SEHU ; 1♀ ( 9. viii. 2001 , T. Yoshida , SEHU ) & 3♀ ( 18–31. viii. 1993 , N. Kuhara , MT , EUMJ ), Nopporo , Ebetsu ; 8♀ ( 3–17. viii. 2007 , 180 m , 43°00’N / 142°04’E ) , 2♀ ( 17–31. viii. 2007 , 180 m , 43°00’N / 142°04’E ) & 3♀ ( 16. vii–6. viii. 2008 , 263 m , 43°01’N / 142°05’E ), Ohyubari ( Natural forest ), Yubari ( A. Ueda ), MT , EUMJ ; 11♀ ( 13–21. viii. 2001 ), 20♀ 3♂ ( 21. viii–3. ix. 2001 ) & 1♀ ( 3–21. ix. 2001 ), Moizari River , Eniwa ( T. Ohkawara & T. Ito ), MT , EUMJ ; 10♀ , Kusabue-rindo ( 42.7154°N / 141.2143°E ), Chitose , 17. viii–1. ix. 2012 ( N. Kuhara , MT ), BM , EUMJ ; 1♀ , Lake Shikotsu , Chitose , 28. vii–11. viii.2000 ( K. Uesugi , MT ), SEHU ; 1♀ , Oohonai River , Makkari , 18–28. viii. 1998 ( M. Nakajima , MT ), NIAES ; 3♀ ( 11–29. viii. 2002 , 42°29’22”N / 141°03’34”E ) & 2♀ ( 29. viii–23. ix. 2002 , 42°29’N / 141°03’E ), Mt. Raiba-dake , Noboribetsu ( T. Yoshida ), MT , SEHU ; 1♀ , Ohnuma , Nanae , 24. viii. 1994 ( R. Matsumoto ), OMNH . [ Honshu ] Aomori Pref. : 1♀ , Kawaratai ( 40°31’N / 140°10’E ), Nishimeya , 15–25. vii. 2013 ( T. Nakamura , MT ), EUMJ . Tochigi Pref. : 5♀ ( 24. vii–17. viii. 2014 ) & 9♀ ( 1-25. viii. 2013 ), Dodaira , Enna-skyline, Nasushiobara ( T. Nakayama ), MT , EUMJ ; 6♀ , Nikko-zawa–Kinunuma , Nikko , 14. viii. 2004 ( H. Makihara , MT ), EUMJ ; 1♀ , Sukkan-sawa , Kita-one ( 1000 m ), Nasushiobara , 13–21. viii. 2008 ( T. Matsumura , MT ), TPM . Gunma Pref. : 1♀ , Mt. Hotakasan , 29. viii. 2006 ( H. Katahira ), KPMNH . Niigata Pref. : 1♂ , Sasagamine ( 1230–1290 m ) ( 36°51'N / 138°04'E ), Myoko , 17. viii. 2013 ( S. Shimizu ), Sweeping , EUMJ . Nagano Pref. : 1♀ , Utsukushi-matsu ( 1350 m ) ( 36.135°N / 138.234°E ), Nagawa , 23. viii. 2012 ( S. Fujie ), EUMJ ; 1♀ , Abo-toge , Matsumoto , 5. ix. 2009 ( T. Komatsu ), EUMJ ; 1♂ , Mt. Ontake-san–Mt. Hakkai-san ( 1660–1700 m ) ( 35°51'47"N / 137°31'37"E ), Ohtaki , 8. viii. 2010 ( K. Watanabe ), KPMNH . Gifu Pref. : 1♀ ( 24. vii-3. viii. 2010 ) & 2♀ ( 9–16. viii. 2010 ), Shima ( 800 m ), Shirakawa ( R. Sugiura & H. Sumi , MT ), OMNH ; 1♀ , Hidarimata , Kamitakara , 1. ix. 1996 ( M. Sueyoshi ), OMNH . Osaka Pref. : 1♀ ( 23. vii–2.viii. 2002 ), 14♀ ( 2–10. viii. 2002 ) & 1♀ ( 10–20. viii. 2002 ), Mt. Izumi-Katsuragisan , Kishiwada ( R. Matsumoto , MT ), OMNH . Nara Pref. : 1♀ , Nikaidake–Kinomiyazuka ( 34.3507°N / 136.0661°E ), Mt. Azami-dake , Kawakami , 6–23. viii. 2010 ( R. Matsumoto , MT ), OMNH . [ Shikoku ] Ehime Pref. : 1♀ , Hontani , Odamiyama , 26–30. ix. 2008 ( E. Yamamoto , MT ), EUMJ ; 1♀ , Omogokei , Kumakogen , 20. ix. 1958 ( K. Kamijo ), SEHU . Description . FEMALE (n=20) ( Fig. 4 ). Body 4.5–5.6 mm long. Fore wing 3.4–4.7 mm long. Head wider than high, 0.6–0.9 × as long as wide in frontal view ( Fig. 1 ); head length 0.4–0.5 × as long as wide ( Fig. 2 ); face with median longitudinal convexity and with a short longitudinal ridge on dorso-median portion; face smooth except on median longitudinal convexity granulate; POL 0.8–1.2 × as OD; OOL 0.7–1.3 × as long as OD; LOL 0.3–1.0 × as long as OD; FI 0.2–0.3; occiput and interocular area polished; minimum interocular distance 1.2–1.9 × as long as compound eye width of same line; inner margins of eyes convergent toward ventrally, not emarginated at antennal socket; gena to vertex along the outer orbit of eye with sparse hairs; GOI 2.4–5.3; occiput higher than wide ( Fig. 6 ); occipital carina strong ( Fig. 6 ); anterior tentorial pit large and deep; clypeus very narrow, apical portion of clypeus 0.2–0.4 × as wide as minimum interocular distance, with some longitudinal striae, apical margin rounded; malar space concaved into a crescentic, apical margins depressed, with carina; mouth parts much reduced; mandible absent; area of surrounded by hypostomal carina elliptic; maxillary palpus reduced to 1 segment; labial palpus disappeared; antenna with 11 flagellomeres ( Fig. 8 ); scape about as long as pedicel or somewhat short, F1 relatively slender, 7.3–11.7 × as long as wide; relative proportion of length of all flagellomeres, F1: F2: F3: F4: F5: F6: F7: F8: F9: F10: F11= 3.3: 2.4: 2.3: 2.3: 2.2: 2.2: 2.1: 2.0: 1.9: 1.7: 2.2. Mesosoma polished ( Fig. 10 ); anterior margin of pronotum with transverse groove, and with ventral margin rounded; pronotal collar short ( Fig. 14 ); mesoscutum 1.1–1.4 × as long as wide except marginal ring, highly elevated and narrowed toward anteriorly; marginal rim of mesoscutum lamellate; anterior half of mesoscutum scattered punctures with hairs except median part; posterocentral area of mesoscutum depressed; scutellum basically impunctate, with lateral carina extending anterior half; post scutellum strongly convex; epicnemial carina absent ( Fig. 12 ); mesopleural fovea elongate to median portion of mesopleuron and rugose; mesopleural suture distinct; anterior portion of mesopleuron rounded, with hairs and fine wrinkles ( Fig. 12 ); sternalus absent; posterocentral portion of metapleuron depressed; pleural carina strongly curved; propodeum with rugose carinae, with sparse hairs; propodeal spiracle elliptic. Legs with weak and dense hairs ( Fig. 15 ); femora clavate. Fore coxa with longitudinal carina. Hind coxa 1.9–2.7 × as long as trochanter; femur 5.5–7.8 × as long as trochanter; tibia curved dorsally at apical 1/3; basitarsus 0.7–0.9 × as long as following tarsomeres combined; 1–3 tarsomeres parallel sided in lateral view; 2–5 tarsal segments weakly flattened; 4th tarsomere 1.3–1.9 × as long as 5th tarsomere; maximum width of 4th tarsomere 1.4–1.8 × as wide as maximum width of 5th tarsomere; apical width of 5th tarsomere as wide as basal width. Fore wing entirely covered with dense hairs ( Fig. 9 ); stigma slender, over 8.9 × as long as maximum width; M+CU non-tubular except apical area; RS almost straight, apical 1/5 slightly curved; M entirely straight; AA nontubular except apical portion; 1cu-a opposite M&RS; 2r&RS short, 0.2–0.3 × as long as 1m-cu&M; 1m-cu&M 2.5–3.5 × as long as first abscissa of CU; distal abscissa of CU straight, apical 1/4 non-tubular; 2cu-a present basal half; RS+M very short, sometimes absent; M+CU present only apical portion. Hind wing slender, 4.8–5.9 × as long as wide, and with four hamuli; veins non-tubular except R; RA, RS, M+CU, M and CU colored. Metasoma slender ( Fig. 16 ); T1–T4 depressed, smooth and hairless except apical and lateral marginal areas with sparse hairs; T1 polished, 3.3–4.3 × as long as apical width, apical width 1.4–1.8 × as wide as basal width, posterocentral area with longitudinal depression ( Fig. 16 ); T2 1.1–1.5 × as long as T1, 2.9–4.7 × as long as apical width, apical width 1.1–2.1 × as wide as basal width, with some wrinkles laterally, and dorsal contour concave in lateral view; around spiracles of T1 and T 2 triangularly raised ( Fig. 16 ); T3 1.4–3.1 × as long as apical width; dorsal contour of T2 and basal portion of T3 concave in lateral view; T5–T7 compressed, and entirely covered with dense hairs; ovipositor tapering toward apex; ovipositor sheath 0.2–0.4 × as long as hind basitarsus, lateral and dorsal area with dense hairs. Coloration: Head blackish-brown; clypeus yellowish brown except apical 1/5 whitish yellow, antennal sockets, scapes, basal half of 1st flagellomere yellow-brown; distal half of 1st flagellomere, triangular tubercle, pedicels yellowish-brown; maxilla, labium, maxillary and labial palpi pale-yellow. Mesosoma blackish-brown; propleuron, mesoscutum, scutellum, and lower part of mesopleuron brown; anterior portion of mesoscutum brownish-brown except central part; lower part of pronotum, anterolateral margin of mesonotum, marginal ring of mesoscutum, posterolateral margin of scutellum, posterior margin of propodeum yellowish-brown; anterior margin of mesopleuron and tegula pale-yellow. Fore and middle legs brownish-yellow; fore and middle coxae and trochanters whitishyellow. Hind leg brown; hind coxa brownish-yellow. Wings hyaline; stigma and veins blackish-brown. Metasoma brown; T1 and sternite blackish-brown; anterior margins of T2–T3, and 4T brownish-yellow; ovipositor brownishyellow; T2–T4 whitish-yellow. FIGURES 4–8 . Neohybrizon mutus sp. nov. : 4, lateral habitus of female; 5, ditto male; 6, head of female in posterior view; 7, head of male in frontal view; 8, antenna of female. Scales: 4–5, 8, 1.0 mm; 6–7, 0.5 mm. FIGURE 9 . Fore and hind wings of Neohybrizon mutus sp. nov. Scale: 1.0 mm. MALE (n=5) ( Fig. 5 ). Body 4.8–5.4 mm long. Fore wing 3.7–4.2 mm long. Similar to females except as follows. Head wider than high, 0.7 × as high as wide in frontal view ( Fig. 7 ); head length 0.5–0.6 × as long as wide; POL 1.1–1.5 × as OD; OOL 1.0–1.2 × as long as OD; LOL 0.7–1.0 × as long as OD; FI 0.2; minimum interocular distance 1.8–2.2 × as long as compound eye width of same line; GOI 2.3–3.8; clypeus very narrow, apical portion of clypeus 0.2–0.3 × as wide as minimum interocular distance; malar space often strongly concaved than female; F1 7.8–13.5 × as long as wide; relative proportion of length of all flagellomeres, F1: F2: F3: F4: F5: F6: F7: F8: F9: F10: F11= 3.0: 2.3: 2.2: 2.3: 2.3: 2.3: 2.2: 2.0: 2.0: 1.9: 2.3. Mesoscutum 1.2–1.3 × as long as wide except marginal rim; scutellum more abruptly narrowed than in female. Hind coxa 1.9–2.5 × as long as trochanter; femur 5.4–7.5 × as long as trochanter; basitarsus 0.8–0.9 × as long as following tarsomeres combined; 4th tarsomere 1.3–1.6 × as long as 5th tarsomere; maximum width of 4th tarsomere 1.2–1.5 × as wide as maximum width of 5th tarsomere. Stigma, over 10 × as long as maximum width; 1m-cu&M 2.1–3.8 × as long as first abscissa of CU. Hind wing 4.9–6.1 × as long as wide. T1 3.2–3.5 × as long as apical width; T2 1.2–1.4 × as long as T1, 2.9–4.1 × as long as apical width, apical width 1.3–1.9 × as wide as basal width; T3 1.3–2.2 × as long as apical width. Subgenital plate transverse and somewhat reduced ( Fig. 17 ); apical margin emarginate medially and with a pair of hairs; basal margin without median apodeme and acute laterally ( Fig. 18-c ). Apical and antero-ventral margin of paramere with sparse hairs ( Fig. 18 ); apical margin of paramere truncated; apical part of digitus slightly expand. Aedeagus slender, penis valve slightly curved ( Fig. 19 ). Coloration similar to females except clypeus and mesosoma, clypeus and lower part of mesopleuron whitish yellow ( Fig. 13 ), anterior portion of mesoscutum brownish-yellow except central part ( Fig. 11 ). Distribution . Hokkaido , Honshu ( Aomori , Tochigi , Gunma , Niigata , Nagano , Gifu , Osaka , Nara ), Shikoku ( Ehime ). Host . Myrmica kotokui Forel, 1911 ( Hymenoptera : Formicidae ) ( Komatsu & Konishi, 2010 ). Etymology . Named after the Latin ‘mutus’, meaning quiet, reffering to the much reduced mouth parts.