Zatypota takayu Matsumoto & Takasuka

Matsumoto, Rikio & Takasuka, Keizo, 2010, A revision of the genus Zatypota Förster of Japan, with descriptions of nine new species and notes on their hosts (Hymenoptera: Ichneumonidae: Pimplinae), Zootaxa 2522, pp. 1-43 : 37-38

Zatypota takayu Matsumoto & Takasuka , sp. nov.

Female. Head ( Figs 11 , 24 ). Flagellum with 21–22 segments; frons impunctate and polished; face and clypeus covered with moderately long pubescence, the former weakly separated from the latter by a shallow supraclypeal suture, weakly convex in lateral view; face slightly produced forward, between antennal socket and supraclypeal suture about 1.4–1.6 x its minimum width between eyes, with a low median vertical ridge of almost its length, with sockets of pubescence weakly protuberant, making its surface rough; clypeus about 2.0 x as wide as its length, with apical margin rounded or somewhat truncate medially; eye bare, its inner margin slightly convergent at midheight of face; ocelli of moderate size; eye remote from lateral ocellus by about maximum diameter of the latter; upper tooth of mandible much longer than the lower, moderately tapered, about 0.6 x as wide as the basal width at the middle, outer face of mandible with some rather long pubescence; palpi formula 4: 3; malar space about 0.6 x basal width of mandible, weakly granulate between lower end of eye and upper end of mandible base; hypostomal carina narrowly lamellate between the lower articulation of mandible and junction of occipital and hypostomal carinae; vertex with inter-ocellar area weakly raised; gena moderately long, with sparse forwardly directed setae; outline of gena behind eye moderately rounded in dorsal view; occipital carina complete dorsomedially, rather strongly bowed forward in dorsal view.

Mesosoma . Pronotum ( Figs 36 , 48 ) with anterior margin moderately reflexed and thickened, mediodorsally produced into a backwardly directed tooth, a dorsomedian bridge connects it with hind margin, lateral face polished, with epomia straight and distinct, upper end of epomia a little remote from upper margin of pronotum and lower part extend downward to reach lower margin; mesoscutum in front of scuto-scutellar groove 1.2–1.3 x as long as wide in dorsal view, bare and polished all over, with median lobe rather strongly convex in lateral view, with distinct almost straight notauli converging to a shallow hollow located slightly behind the middle of mesoscutum; mesopleuron ( Fig. 60 ) with a rather distinct epicnemial carina, its upper end surpassing the level of lower corner of pronotum and rather far from posterior margin of pronotum, almost impunctate, bare and polished laterally, densely covered with pubescence ventrally and in front of epicnemial carina, with a short groove below speculum; mesopleural suture very weakly foveorate; scutellum convex; propodeum ( Figs 72 , 84 ) with rather dense pubescence laterally; areas basalis and superomedia, and areas posterialis and postero-externa fused respectively, carinae delimiting these combined areas distinct; lateral longitudinal carina indistinct anteriorly; pleural carina complete; propodeal spiracle touching pleural carina; metapleuron ( Fig. 84 ) moderately covered with pubescence dorsally; submetapleural carina complete, strong with no expansion anteriorly.

Wings. Fore wing ( Fig. 96 ) with vein Rs+M basad of cu-a by 2– 3 x the width of the vein, 2rs-m about 0.1 x the length of M between 2rs-m and 2m-cu or eliminated for vein Rs touching M; vein cu-a weakly inclivous; vein Cu1a separated from 1m-cu by the length of Cu1b. Hind wing ( Fig. 108 ) with vein M+ Cu straight basaly, moderately bowed distally; distal abscissa of Cu absent; vein cu-a weakly inclivous to vein 1A.

Legs. Legs moderately slender; fore femur 4.1–5.0 x as long as maximum width; hind femur 4.0–5.1 x as long as maximum width: hind tibia 9.0–10.0 x as long as apical width; first tarsal segment of hind leg a little longer than second and third segments combined; fifth segment as long as the second.

Metasoma ( Fig. 120 ). T1 with pair of posterolateral oblique impressions, with dorsomedian longitudinal carina extending to 0.9 of its length and moderately convergent anteriorly and parallel posteriorly in dorsal view; dorsolateral longitudinal carina extends to posterior margin of T1, with spiracle situated on it; T2 smooth with very sharply impressed anterolateral and posterolateral oblique grooves; these grooves delimiting a central evenly convex smooth rhombic area, furnished with very short, weak longitudinal ridges on them; T3–5 similar to T2, with anterior oblique groove more transverse; posterolateral oblique grooves of T4–5 without distinct ridges; T2–6 sparsely covered with pubescence laterally; T1 1.4–1.5 x as long as apical width; T2 0.8–0.9 x as long as T1 and 0.8–0.9 x as long as apical width. Ovipositor projecting beyond apex of metasoma by 0.4–0.5 x length of hind tibia, straight; upper valve of ovipositor moderately thickened at the middle, tapered to sharp point; lower valve moderately thickened sub-basally and medially, then tapered to very sharp point.

Coloration. Head black; face whitish yellow laterally and just below antennal socket; clypeus dark brown, pale apically; narrow yellowish white strips of frontal orbit extend backwards by length of scape; mandible yellowish white except tip brown. Flagellum brown, basal half paler ventrally, pedicel and scape whitish below. Mesosoma black to blackish brown; with indistinct spot on anterolateral surface of median and lateral lobes of mesoscutum, ventro-lateral margin of pronotum, postero-dorsal corner of pronotum, tegula, subalar prominence and scutellum yellow. Legs yellowish white; outer face of hind femur slightly brownish; hind tibia basally obscurely darkened, with apical 0.25 dark brown. Wings hyaline, pterostigma brown. Metasoma blackish brown. Ovipositor brown, sheath black.

Length. Fore wing 4.0– 4.3 mm.

Male. Unknown.

Cocoon ( Fig. 141 ). Light brown, sub-cylindrical, rather densely spun, with somewhat irregular whorls of looser silk on its surface, with a distinct caudal hole. Its cap is cut off circularly by adult female on its emergence.

Variation. Mesosoma reddish brown in two reared materials. In these specimens metasomal tergites partly reddish brown.

Host. Takayus takayensis (Saito) (Theridiidae) .

Biological notes. In Honshu this species has been collected only at localities of relatively high altitude, where the host spider, Takayus takayuensis , is distributed. The larva ( Fig. 140 ) is located on dorso-lateral surface of host abdomen between the middle and posterior end.

Comments. The female of this species resembles that of Z. chryssophaga sp. nov. and Z. baragi sp. nov. in having the median longitudinal ridge on the face. It can be distinguished from Z. chryssophaga by dorsomedially complete occipital carina, and from Z. baragi by the lack of distinct short ridges on the posterolateral oblique grooves of T4–5. In Z. baragi the face is moderately produced forwards (that of Z. takayu is only slightly produced).

Etymology. The specific name is deribed from the Japanese name of the host spider.

Distribution records. Japan: Hokkaido, Honshu.

Specimens examined. Type series. Holotype Ψ, 30.IX.2002, Arimine, (36°28’52”N, 137°27’20”E, (WGS 84), 1,180m a.s.l.), Ohyama, Toyama Pref., Japan, (R.Matsumoto), [OMNH, TI-485]. Paratypes: [Hokkaido] 1Ψ, 4.VIII.2003 (“reared from an unidentified theridiid spider, probably T. takayensis ”), Nopporo, Sapporo, Ishikari Subpref. [Honshu] 1Ψ, 24.VIII.2009, Kitaizumigatake, Sendai/Taiwa, Miyagi Pref., (R.M.); 1Ψ, 5.VII.2009 (early instar larva on host, emer. VII.), Kaminikkawa-toge (1,560–1,600 m alt.), Koshu, Yamanashi Pref., Japan, (K.Takasuka) (ELEU).

Figures

FIGURES 1 – 13. Scanning electon micrography of head of Zatypota spp. (female) in anterior view (1 – 12) and lateral aspect (13). 1, Z. albicoxa; 2, Z. baragi (paratype); 3, Z. brachycera (paratype); 4, Z. chryssophaga (paratype); 5, Z. dendrobia (paratype); 6, Z. elegans (paratype); 7, Z. grachilipes; 8, Z. maculata (paratype); 9, Z. percontatoria; 10, Z. sulcata (paratype); 11, Z. takayu (paratype); 12, Z. yambar (paratype); 13, Z. yambar (paratype). Scale bar = 0.1 mm.

FIGURES 14 – 25. Scanning electron micrography of head of Zatypota spp. (female) in posterior view. 14, Z. albicoxa; 15, Z. baragi (paratype); 16, Z. brachycera (paratype); 17, Z. chryssophaga (paratype); 18, Z. dendrobia (paratype); 19, Z. elegans (paratype); 20, Z. grachilipes; 21, Z. maculata (paratype); 22, Z. percontatoria; 23, Z. sulcata (paratype); 24, Z. takayu (paratype); 25, Z. yambar (paratype). Scale bar = 0.1 mm.

FIGURES 26 – 37. Scanning electron micrography of pronotum and anterior part of mesoscutum of Zatypota spp (female) in dorsal aspect. 26, Z. albicoxa; 27, Z. baragi (paratype); 28, Z. brachycera (paratype); 29, Z. chryssophaga (paratype); 30, Z. dendrobia (paratype); 31, Z. elegans (paratype); 32, Z. grachilipes; 33, Z. maculata (paratype); 34, Z. percontatoria; 35, Z. sulcata (paratype); 36, Z. takayu (paratype); 37, Z. yambar (paratype). Scale bar = 0.1 mm.

FIGURES 38 – 49. Scanning electron micrography of pronotum of Zatypota spp (female) in lateral view. 38, Z. albicoxa; 39, Z. baragi (paratype); 40, Z. brachycera (paratype); 41, Z. chryssophaga (paratype); 42, Z. dendrobia (paratype); 43, Z. elegans (paratype); 44, Z. grachilipes; 45, Z. maculata (paratype); 46, Z. percontatoria; 47, Z. sulcata (paratype); 48, Z. takayu (paratype); 49, Z. yambar (paratype). Scale bar = 0.1 mm.

FIGURES 50 – 61. Scanning electron micrography of mesopleuron of Zatypota spp (female) in lateral view. 50, Z. albicoxa; 51, Z. baragi (paratype); 52, Z. brachycera (paratype); 53, Z. chryssophaga (paratype); 54, Z. dendrobia (paratype); 55, Z. elegans (paratype); 56, Z. grachilipes; 57, Z. maculata (paratype); 58, Z. percontatoria; 59, Z. sulcata (paratype); 60, Z. takayu (paratype); 61, Z. yambar (paratype). Scale bar = 0.1 mm.

FIGURES 62 – 73. Scanning electron micrography of propodeum of Zatypota spp (female) in dorsal view. 62, Z. albicoxa; 63, Z. baragi (paratype); 64, Z. brachycera (paratype); 65, Z. chryssophaga (paratype); 66, Z. dendrobia (paratype); 67, Z. elegans (paratype); 68, Z. grachilipes; 69, Z. maculata (paratype); 70, Z. percontatoria; 71, Z. sulcata (paratype); 72, Z. takayu (paratype); 73, Z. yambar (paratype). Scale bar = 0.1 mm.

FIGURES 74 – 85. Scanning electron micrography of propodeum and metapleuron of Zatypota spp (female) in lateral view. 74, Z. albicoxa; 75, Z. baragi (paratype); 76, Z. brachycera (paratype); 77, Z. chryssophaga (paratype); 78, Z. dendrobia (paratype); 79, Z. elegans (paratype); 80, Z. grachilipes; 81, Z. maculata (paratype); 82, Z. percontatoria; 83, Z. sulcata (paratype); 84, Z. takayu (paratype); 85, Z. yambar (paratype). Scale bar = 0.1 mm.

FIGURES 86 – 97. Fore wings of of Zatypota spp (female). 86, Z. albicoxa; 87, Z. baragi (paratype); 88, Z. brachycera (paratype); 89, Z. chryssophaga (paratype); 90, Z. dendrobia (paratype); 91, Z. elegans (paratype); 92, Z. grachilipes; 93, Z. maculata (paratype); 94, Z. percontatoria; 95, Z. sulcata (paratype); 96, Z. takayu (paratype); 97, Z. yambar (paratype). Scale bar = 0.5 mm.

FIGURES 98 – 109. Hind wings of of Zatypota spp (female). 98, Z. albicoxa; 99, Z. baragi (paratype); 100, Z. brachycera (paratype); 101, Z. chryssophaga (paratype); 102, Z. dendrobia (paratype); 103, Z. elegans (paratype); 104, Z. grachilipes; 105, Z. maculata (paratype); 106, Z. percontatoria; 107, Z. sulcata (paratype); 108, Z. takayu (paratype); 109, Z. yambar (paratype). Scale bar = 0.5 mm.

FIGURES 110 – 121. Scanning electron micrography of first and second metasomal tergite of Zatypota spp (female). 110, Z. albicoxa; 111, Z. baragi (paratype); 112, Z. brachycera (paratype); 113, Z. chryssophaga (paratype); 114, Z. dendrobia (paratype); 115, Z. elegans (paratype); 116, Z. grachilipes; 117, Z. maculata (paratype); 118, Z. percontatoria; 119, Z. sulcata (paratype); 120, Z. takayu (paratype); 121, Z. yambar (paratype). Scale bar = 0.1 mm.

FIGURES 122 – 141. Host spider, larva and cocoon of Zatypota spp. 122 – 123, Z. albicoxa; 124 – 125, Z. baragi; 126 – 127, Z. brachycera; 128 – 129, Z. chryssophaga; 130 – 131, Z. dendrobia; 132 – 133, Z. elegans; 134 – 135, Z. maculata; 136 – 137, Z. percontatoria; 138 – 139, Z. sulcata; 140 – 141, Z. takayu.