Siobla rufopropodea Wei, 1998

Niu, Gengyun & Wei, Meicai, 2013, Revision of the Siobla formosana group (Hymenoptera: Tenthredinidae), Zootaxa 3746 (1), pp. 41-68 : 52-53

Siobla rufopropodea Wei, 1998

( Figs 3 c, 3d, 5g, 5h, 9d, 9q, 10m, 10n)

Siobla rufopropodea Wei, 1998: 143 . ♂, type locality: Luanchuan, Henan ( China).

Description. ♀. Length, 12 mm ( Figs 3 c, 5g). Head black, labrum, palpi, posterior of mandible and antenna yellowish brown, apex of mandible dark reddish brown, prothorax and mesothorax black, posterior margin of pronotum (greatest width 1.5 × length of lateral ocellus), tegula, posterior ridge of mesoparapsides and posterior margin of posttergite yellowish brown; metathorax yellowish brown, metascutellum black; abdomen black, 1st to 4th abdominal tergites, most of 5th abdominal tergite, lateral edges of 8th abdominal tergite, 9th to 10th abdominal tergites, 1st to 5th sternites and apical of sheath yellowish brown; legs yellowish brown, base of fore coxa, and apical 0.25 of hind femur black; body hairs yellowish brown; wings yellowish hyaline, pterostigma yellowish brown.

Head densely and coarsely punctured, without any interspaces, mat; labrum shiny with minute and sparse punctures, clypeus punctured with shiny interspaces; prescutum and scutum densely punctured, interspaces narrow, microsculptured; mesoscutellum densely punctured without interspaces; middle of posttergite shiny, microsculptured laterally; parapsides with large and sparse punctures and dense microsculpture; metapostnotum shiny; middle and upper of mesepisternum densely and coarsely punctured, venter with large and shiny interspaces between small and sparse punctures; anepimeron coarsely punctured, katepimeron microsculptured, posterior shiny; metepisternum with anterior and posterior margin shiny; upper of metepisternum shallowly and densely punctured, venter sparsely punctured, shiny; basin and posterior corner of metepimeron shiny, dorsum with large punctures. Abdomen microsculptured, shiny, lateral edges of 1st abdominal tergite and 6th to 8th abdominal tergites punctured.

Hairs on dorsum of head straight, as long as diameter of lateral ocelli. Clypeus flat, anterior margin truncate; malar space as long as transverse diameter of median ocellus; shortest distance between eyes below antennal sockets in front view 1.1 × as long as eye height; middle fovea broad and deep; interocellar furrow narrow and deep, postocellar furrow broad and shallow; postocellar area 1.7 × as broad as long, obviously lower than top of ocelli; lateral furrows deep, curved, obviously divergent posteriorly; head behind eyes 0.8 × length of eye in dorsal view; curved laterally and then convergent posteriorly; genal carina sharp, complete. Antenna as long as head, thorax, and 1st abdominal tergite together, obviously short than vein C, 2nd antennomere 1.2 × as long as broad, relative length of 3rd to 4th antennomeres as 1.5, 5th to 8th antennomeres weakly compressed, not enlarged, inner and outer sides of 6th to 8th antennomeres with weak furrows, 7th antennomere about 2 × as long as broad. Middle furrow of prescutum distinct; mesoscutellum elevated, slightly higher than scutum. Metabasitarsus 5.5 × as long as broad, about as long as following 3 tarsomeres combined, hind inner tibial spur 0.5 × length of metabasitarsus. Pulvilli of hind tarsus weakly developed, 1st pulvillus 0.5 × basal breadth and 0.3 × apical breadth of metabasitarsus, distance between basal two pulvilli 5 × length of 2nd pulvillus. Ovipositor sheath as long as middle tibia, apical sheath 1.3 × as long as basal sheath. Lancet with 16 serrulae, ( Fig. 9 d), middle serrulae each with 5–6 distal fine teeth ( Fig. 9 q).

Male. Length, 9.5 mm ( Figs 3 d, 5h). Similar to female in structure and color, but base of 1st antennomere black; greatest width of pale posterior margin of pronotum 0.9 × length of lateral ocellus; extreme anterior line of metapleuron black, 1st to 5th abdominal tergites and sternites yellowish brown. Hairs on dorsum of head 1.1 × as long as diameter of lateral ocelli; shortest distance between eyes below antennal sockets in front view as long as eye height; postocellar area 2 × as broad as long, malar space 0.5 × transverse diameter of median ocellus; head in front view with lower interocular distance 0.9 × eye height; head behind eyes 0.4 × eyes in length in dorsal view, curved in middle and narrowing posteriorly. Genitalia as in Figs 10 m, 10n.

Variation. The anterior half of metapleuron of one male and entire 1st antennomere black.

Specimens examined. 4♀, 16♂. Henan: 1♂, “Luanchuan, 1996-VII-13, Wei Meicai”; [red] ” Holotype ”; “CSCSHT 00810025” (CSCS); 2♂, Luanchuan, 1996-VII-13, Wei Meicai leg.; [yellow] paratype; Hubei: 1♂, Guitouwan, Shennongjia, E.110º08.872´, N.31º28.439´, 2150m, 2010-V-24, Li Zejian leg.; 2♂, CSCS11021, Guitouwan, Shennongjia, Yichang, E.110º08.872′, N.31º28.439′, 2150m, 2011. V.19, Li Zejian leg.; 1♀ 5♂, CSCS11022, Guitouwan, Shennongjia, Yichang, E.110º08.872′, N.31º28.439′, 2150m, 2011. V.25–28, Li Zejian leg.; 1♀, CSCS11021, Guitouwan, Shennongjia, Yichang, E.110º08.872′, N.31º28.439′, 2150m, 2011. V.19, Li Zejian leg.; CSCS-Hym-M00681; 1♀ 4♂, Guitouwan 2150m, N 31º28´, E.110º09´, Shennongjia, 28.V.2011, A.

Shinohara leg.(NSMT); Shaanxi: 1♀, Kaitianguan 2000m, 34 00N 107 51E, Mt. Taibaishan, Qinling Mts., 6. VI. 2007, A. Shinohara; NSMT-HYM, 62705 (NSMT); 1♂, nr. ropeway 2700m, Kaitianguan Tanguy, Mt. Taibaishan, Qinling Mts., 4. VI. 2007, A. Shinohara; NSMT-HYM, 62706 (NSMT).

Distribution. China (Henan, Hubei, Shaanxi).

Remarks. The species differs from all other species of the Siobla formosana group in the metanotum and metapleuron largely, the first abdominal tergite entirely shining yellow brown; wings hyaline with distinct yellow tinge, venation largely yellow brown; the hind coxa and hind tibia entirely yellow brown; and the malar space as long as diameter of the lateral ocellus. The female of the species is described for the first time.

Figures

FIGURE 3. Siobla species, dorsal view. a. S. atra, Lectotype, ♀; b. S. atra, Paralectotype, ♂; c. S. rufopropodea, non-type, ♀; d. S. rufopropodea, non-type, ♂; e. S. semipicta, Lecotype, ♀; f. S. semipicta, non-type, ♂; g. S. zuoae, paratype, ♀; h. S. zuoae, paratype, ♂. Scale bar = 1 mm.

FIGURE 9. Siobla species, lancet. a. S. acutitheca; b. S. weiweii, sp. nov., c. S. atra, d. S. rufopropodea, e. S. carinoclypea, f. S. listoni, g. S. parallela, sp. nov., h. S. pseudoplesia, i. S. semipicta, j. S. zuoae, k. S. formosana, l. S. fumipennis, m. S. jiangi, sp. nov.. Middle serrulae. n. S. acutitheca; o. S. weiweii, sp. nov., p. S. atra, q. S. rufopropodea, r. S. carinoclypea, s. S. listoni, t. S. parallela, sp. nov., u. S. pseudoplesia, v. S. semipicta, w. S. zuoae, x. S. formosana, y. S. fumipennis, z. S. jiangi, sp. nov .. Scale bar = 100 Μm.

FIGURE 10 Siobla species, penis valve and gonoforcep. a – b. S. acutitheca; c – d. S. listoni, e – f. S. zuoae, g – h. S. formosana, i – j. S. fumipennis, k – l. S. jiangi, sp. nov., m – n. S. rufopropodea, o – p. S. carinoclypea, q – r. S. parallela, sp. nov., s – t. S. semipicta, u – v. S. atra, w – x. S. pseudoplesia. Scale bar = 100 Μm.