Macrophya opacifrontalis Li, Lei & Wei, 2014

Li, Ze-Jian, Lei, Zhen, Wang, Jun-Feng & Wei, Mei-Cai, 2014, Three new species of sanguinolenta-group of the genus Macrophya (Hymenoptera: Tenthredinidae) from China, Zoological Systematics 39 (2), pp. 297-308 : 300-302

4.1 Macrophya opacifrontalis Li, Lei & Wei , sp. nov. ( Figs 1–13 )

Female. Body length 10 mm to 13.5mm. Body black, following parts white: basal half of the mandibles, apical small maculae of the labrum, posterior margin of the postocellar area, posterior margin of the pronotum, outer margin of the tegula, narrow edge of the posterior of tergite 1, small maculae on the lateral sides of tergite 1, tergite 10 entirely, base of hind coxa with a large oval macula on the outer side, hind trochanter, stripes on the apical half of the anterior of fore femur, apex of the anterior of middle femur with a small macula, anterior side of fore tibia, subapical middle tibia with a small dorsal macula, stripes on subapical 1/4 to 1/3 of dorsal side of hind tibia, and dorsal sides of fore and middle tarsi shortly; palp largely, fore and middle tarsi largely, pale brown; hind femur largely reddish brown, but apex and base with black maculae. Body hairs silver, setae on sheath black brown. Wings hyaline, without smoky macula, stigma and veins black brown ( Fig. 1 ).

Dorsal head less shiny, frons slightly densely and coarsely punctured, interspaces between punctures slightly narrower than diameter of punctures, with fine microsculptures ( Fig. 3 ); labrum and clypeus shiny, with some large and shallow punctures, surface with some fine microsculptures. Thorax less shiny, punctures on mesonotum about denser and smaller than punctures on head, interspaces broader than the diameter of punctures, with fine microsculptures; mesoscutellum shiny, apex with some large punctures, around with dense and small punctures; mesoscutellar appendage with distinct punctures and microsculptures; metascutellum less shiny, with some punctures and fine microsculptures; mesepisternum densely punctured, interspaces distinct, shiny; anepimeron with dense and rugose punctures and wrinkles; anterior 1/5 of katepimeron smooth and shiny, without punctures or microsculpture, posterior 4/5 of katepimeron with coarse and rugose punctures; metepisternum less shiny, minutely and densely punctured; anterior of metepimeron smooth, extra area with distinct punctures and microsculptures ( Fig. 6 ). All abdominal tergites shiny, lateral tergite 1 with some punctures, medially nearly smooth; basal half of tergites 2 to 5 with minute and dense punctures, apical half with very sparse punctures; dorsal tergites 6 to 10 with dense punctures and fine microsculptures. Ventral side of hind coxa slightly minutely and densely punctured, interspaces broader than the diameter of punctures; outer side of hind coxa densely punctured, interspaces with fine microsculptures. Surface of sheath with very fine punctures and microsculptures.

Labrum slightly elevated, anterior margin truncated; clypeus flat, slightly broader than the distance between the lower corner of the eyes, lateral sides convergent forward, anterior margin roundly incised to approximately 2/5 length of clypeus, lateral corners obtuse ( Fig. 4 ); malar space 0.5 times the diameter of the middle ocellus; frons elevated, ocellus slightly higher than the top of the eyes in lateral view; middle fovea shallow, long punctiform; lateral foveae slightly deep, furrow like; interocellar furrow distinct, postocellar furrow indistinct; POL:OOL:OCL = 6:12:9; postocellar area distinctly elevated, 2.5 times broader than long, anterior half of lateral furrow shallow, posterior half deep, slightly diverging posteriorly; head strongly narrowed behind eyes in dorsal view, occipital carina complete. Antenna slender, 1.5 times longer than the head and thorax together and as long as the abdomen; antennomere 2 as long as broad; antennomere 3, 1.5 times as long as antennomere 4 (25:17), 0.8 times as long as antennomeres 4 and 5 combined (35:32); antennomeres 4 to 8 not dilated and weakly compressed ( Fig. 5 ). Mesoscutellum roundly elevated, without protuberance or carina, as high as the top of the mesonotum in lateral view; mesoscutellar appendage with obtuse carina; metascutellum with short and lower carina; dorsal-posterior platform of mesepimeron about as broad as the diameter of the middle ocellus; posterior corner of metepimeron square and without appendage; mesopleuron and metapleuron as shown in Fig. 6 ; the distance between cenchri thrice the breadth of a cenchrus. Inner tibia spur of hind leg approximately 0.65 times the length of the metabasitarsus (13:20); metabasitarsus slender, slightly longer than the following 4 tarsomeres combined (10:9); claw with inner tooth as long as outer tooth. Ovipositor sheath approximately 0.8 times as long as metabasitarsus (33:40), apical sheath slightly shorter than the basal sheath, apical margin roundish and narrow in lateral view ( Fig. 7 ), setae on sheath curved and dense in dorsal view. Fore wing with vein cu-a joining cell 1M at basal 1/3, vein 2r joining cell 2Rs at apical 1/3, vein 1r-m slightly curved, vein 2r-m oblique, cell 2Rs slightly longer than cell 1Rs, petiole of anal cell slightly shorter than vein 1r-m; petiole of anal cell in the hind wing approximately 0.5 times as long as vein cu-a, vein cu-a slightly oblique. Lancet with 18 serrulae ( Fig. 10 ), middle serrulae slightly oblique and protruding, middle serrulae each with 1 proximal tooth and 4 to 5 distal teeth, subbasal teeth distinct, annular spine bands narrow, spine sparse, 8 th to 10 th serrulae as shown in Fig. 11 .

© Zoological Systematics, 39 (2): 297–308

© Zoological Systematics, 39 (2): 297–308

Male. Body length 7.0 mm to 7.5 mm ( Fig. 2 ); body color and structure similar to female, following parts white: labrum and apical third of clypeus ( Fig. 8 ), fore and middle trochanters largely, except for black dorsal maculae; outer side of hind coxa entirely black; dorsally subapical 2/5 of the hind tibia with white macula; antenna slightly setiform as shown in Fig. 9 ; subgenial plate longer than broad, apical margin roundish; inner side of base of harpe distinctly extruded, weakly narrowed toward apex ( Fig. 12 ), penis valve as shown in Fig. 13 .

Holotype female, China, Zhejiang, Lin’an, Mt. Tianmu , 11 June 1993, Ming-Jiang Zhu leg. Paratypes: 1 female, China, Hunan, Sangzhi, Mt. Badagong , 1 May 2000, Mei-Cai Wei leg. ; 1 male, China, Hunan, Sangzhi, Mt. Badagong , 30 April 2000, Wei Xiao leg. ; 1 female, China, Hunan, Shimen, Mt. Huping , 30 April 2000, Yi-Hai Zhong leg. ; 1 female, China, Guizhou, Mt. Fanjing, Yangaoping (27°55′N, 108°44′E; elev. 1 750 m), 20–25 May 2008, Shuai-Guo Nie leg. ; 1 male, China, Jiangxi, Mt. Guan, Donghe (elev. 430 m), 31 March 2009, Ling-Li Yi and Yi Li leg. ; 1 female, China, Jiangsu, Jurong, Mt. Baohua , 14–15 April 2012, Jian-Yue Qiu leg., CSCS12071 ; 1 male, China, Nanjing, Pikou, Laoshan Forest Park, 8 April 2012, Jian-Yue Qiu leg., CSCS12070 .

Distribution. China (Zhejiang, Jiangsu, Hunan, Jiangxi, Guizhou).

Individual variation. Lateral lobes of clypeus in female with fine, white maculae.

Etymology. The species is named after the densely and coarsely punctured frons.

Remarks. The new species is a member of the tongi- subgroup of the sanguinolenta -group and is similar to M. vacillans Malaise, 1931 from China. Compared with M. vacillans , M. opacifrontalis is characterized by dorsal head less shiny, frons slightly densely and coarsely punctured, interspaces narrower than diameter of punctures, with fine microsculpture; posterior margin of the postocellar area and outer margin of tegula white; postocellar area 2.5 times broader than long; mesoscutellum entirely black; lateral tergite 1 with small, white maculae; tergites 2 to 9 entirely black; serrulae of lancet protruding, annular spine bands narrow. In M. vacillans , dorsal head strongly shiny, frons sparsely and shallowly punctured, large region smooth, without microsculpture; postocellar area and tegula entirely black; postocellar area twice broader than long; mesoscutellum largely white medially; lateral tergite 1 without white maculae, postero-lateral tergites 3 to 5 with distinct, transverse, and white maculae, tergites 2 and 6 to 9 entirely black; serrulae of lancet flat, annular spine bands broad.

Figures

Figs 1–13. Macrophya opacifrontalis Li, Lei & Wei, sp. nov. 1. Adult female, dorsal view. 2. Adult male, dorsal view. 3. Female head, dorsal view. 4. Female head, anterior view. 5. Female antenna. 6. Female mesopleuron and metapleuron. 7. Ovipositor sheath, lateral view. 8. Male head, anterior view. 9. Male antenna. 10. Lancet. 11. 8th–10th serrulae of lancet. 12. Gonoforceps. 13. Penis valve. Scale bars: 1, 2 = 1mm, 11, 13 = 50μm, 10, 12 = 100 μm.