Utetes subrosae Tan & van Achterberg, 2018

Tan, Jiang-Li, Achterberg, Cornelis Van, Zhang, Ruo-Nan & Wu, Jia-Xuan, 2018, Five new species of Utetes Foerster (Hymenoptera, Braconidae, Opiinae) from NW China, Zootaxa 4402 (3), pp. 525-541 : 537-541

Utetes subrosae Tan & van Achterberg , sp. n.

( Figs 51–63 )

Type material. Holotype, ♀ ( NWUX) “NW China: Ningxia, Liupan Mt., Jingyuan, Dongshanpo For [est] Farm , 35°23’26”N 106°20´34.27”E, 4.viii.2015, c . 1800 m, Jiangli Tan, NWUX ”. Paratypes: 1 ♂ ( RMNH), same data as holotype ; 1 ♂ ( NWUX), id., but Erlonghe Forest Farm, 35°23’24.14”N 106°20´41.43”E, 2.viii.2015 ; 1♀ ( RMNH), id., but Qiuqianjia Forest Farm, 35°32’56.94”N 106°24´50.89”E, 4.viii.2015, c. 1900 m ; 1♀ ( NWUX) “NW China: Shaanxi, from Huangguan to Xunyangba, Ningshaan , N33.54°, E105.36°, 1.vii.–17.viii.2016, 1236 m, black Mal. trap, Tan JL & Tan QQ, NWUX ”.

Comparative diagnosis. Similar to U. rosae (Tobias, 1977) but the new species has the setose part of ovipositor sheath 0.3 × hind tibia (0.8 × in U. rosae ), the mesoscutum with sharply protruding “shoulders” anteriorly (rounded anteriorly); the hind femur approx. 4 × as long as wide (approx. 3 ×) and the mediolongitudinal carina of propodeum short (absent). It shares with U. valens (Papp, 1978) from Korea the distinct “shoulders”, but U. valens has vein 1-SR of fore wing 0.8 × as long as vein 1-M (0.6 × in U. subrosae ); vein m-cu of hind wing present (absent) and setose part of ovipositor sheath 0.6 × hind tibia (0.3 ×).

Description. Holotype, ♀, length of body 3.2 mm, of fore wing 3.4 mm.

Head. Antenna with 38 antennomeres, medium-sized bristly setose and 1.3 × as long as fore wing; third antennomere 1.2 × as long as fourth antennomere, length of third, fourth and penultimate antennomeres 2.4, 2.0 and 1.8 × their width, respectively ( Figs 56–58 ); length of maxillary palp 1.1 × height of head; labial palp segments slender; occipital carina distinctly separated from hypostomal carina and carina ventrally reduced and dorsally absent; hypostomal carina very wide; length of eye in dorsal view 2.5 × temple; frons shallowly depressed anteriorly but with median crest and in front of anterior ocellus with shallow triangular depression, medially smooth and glabrous, laterally punctulate and setose ( Fig. 60 ); face sparsely and finely punctate but medial crest area smooth ( Fig. 59 ); width of clypeus 2.8 × its maximum height and 0.6 × width of face; clypeus moderately convex medially, with some coarse punctures and protruding forwards, ventrally straight and rather thin ( Fig. 59 ); hypoclypeal depression large ( Fig. 59 ) and labrum with some coarse punctures; malar suture absent and area flat; length of malar space 0.9 × basal width of mandible; mandible triangular and with long narrow ventral and dorsal carinae ( Fig. 63 ).

Mesosoma. Length of mesosoma 1.3 × its height; pronope large slit-shaped, deep; pronotal side largely smooth, only medially and posteriorly crenulate; epicnemial area largely smooth; precoxal sulcus wide and coarsely crenulate, nearly up to anterior margin of mesopleuron, pointing to area near middle coxa and remaining far from posterior margin of mesopleuron; remainder of mesopleuron smooth (except row of punctulation behind precoxal sulcus) and strongly shiny; pleural sulcus smooth; anterior groove of metapleuron with few indistinct crenulae ( Fig. 53 ); notauli largely absent on disc, but anteriorly shallowly impressed behind strongly developed “shoulders” ( Fig. 54 ); lateral lobes of mesoscutum largely glabrous, only notaulic courses and middle lobe medially and anteriorly with setae; medio–posterior depression of mesoscutum deep, linear and long; scutellar sulcus rather wide and moderately crenulate; scutellum distinctly convex medially, smooth between sparse punctulation and only laterally densely setose ( Fig. 54 ); propodeum with short medio-longitudinal carina connected to irregular and distinctly transverse carina, medially rugose and remainder mainly smooth ( Figs 54–55 ).

Wings. Fore wing ( Fig. 52 ): pterostigma triangular; 1-R1 ending nearly at wing apex and 1.5 × as long as pterostigma; r:3-SR:SR1 = 3:30:53; 2-SR:3-SR:r-m = 20:30:10; r and base of 3-SR widened; 1-SR 0.6 × 1-M; 1-M and SR1 weakly curved; m-cu subinterstitial; cu-a oblique and narrowly postfurcal; first subdiscal cell closed, CU1b nearly as long as 3-CU1; apical 0.3 of M+CU1 sclerotized. Hind wing ( Fig. 52 ): M+CU:1-M:1r–m = 21:20:15; cu-a straight; m-cu completely absent.

Legs. Length of femur, tibia and basitarsus of hind leg 4.1, 8.8 and 5.4 × as long as wide, respectively; hind femur and tibia with long setae, especially femur ventrally and tibia dorsally ( Fig. 61 ); carinula of hind tibia long and slightly sinuate ( Fig. 62 ).

Metasoma. Length of first tergite 1.1 × its apical width, its surface evenly convex medially, largely smooth except some medium-sized depressions, without median carina and with dorsal carinae remaining separated and present in basal 0.9; second tergite with pair of short basal depressions; second and following tergites smooth ( Fig. 55 ); length of setose part of ovipositor sheath 0.09 × fore wing (entire visible sheath 0.13 ×) and 0.3 × hind tibia ( Fig. 61 ).

Colour. Black; palpi, coxae, trochanters and trochantelli ivory; clypeus (except dorsally), mandible (but teeth dark brown), scapus ventrally, tegulae, and remainder of legs (but telotarsi dark brown) pale yellowish; vague patch at temple dorsally and inner orbita narrowly chestnut brown; apex of third–seventh tergites membranous and brown; metasoma ventrally dark brown; wing membrane subhyaline but submedially near veins weakly infuscate; veins of hind wing and of basal third of fore wing (except C+SC+R) brown; pterostigma and remainder of veins dark brown.

Variation. Length of body 2.6–3.2 mm, of fore wing 3.0– 3.4 mm; antennomeres of ♀ 35(1), 37(1) or 38(1) and of ♂ 36(1) or 38(1), length of first tergite 1.1–1.3 × its apical width, length of setose part of ovipositor sheath 0.08–0.09 × fore wing and 0.3 × hind tibia; vein m–cu of fore wing subinterstitial or narrowly postfurcal. The males have the head entirely black dorsally and the precoxal sulcus less extensively crenulate.

Distribution. China (Ningxia, Shaanxi).

Map from: https://en.wikipedia.org/wiki/File: China _edcp_relief_location_map.jpg Biology. Unknown.

Etymology. From “sub” (Latin for “under, somewhat”) and the specific name “ rosae ” because it is close to U. rosae (Tobias, 1977) .

Notes. We examined a very similar male from Yunnan (NWUX: Dali, Mt. Cang) but it has vein 1-SR+M of fore wing strongly sinuate and vein r of fore wing longer than in U. subrosae .

Figures

FIGURE51. Utetes subrosae Tan & van Achterberg, sp. n., ♀, holotype, habitus, lateral aspect.

FIGURES52–63.Utetes subrosae Tan &vanAchterberg, sp. n., ♀, holotype.52—wings.53—mesosoma, lateral aspect.54— mesosoma, dorsal aspect. 55—propodeum and first–third metasomal segments, dorsal aspect. 56—antenna. 57—basal antennomeres of antenna. 58—apical antennomeres of antenna. 59—head, anterior aspect. 60—head, dorsal aspect. 61—hind leg, lateral aspect. 62—hind tibia, mesal aspect,arrow points to basal carinula. 63—mandible, latero–ventral aspect.