Macrophya brevicinctata Li, Liu & Wei

Mengmeng Liu, Zejian Li, Jian Shang & Meicai Wei, 2016, Three new species of annulitibia - group of the genus Macrophya Dahlbom (Hymenoptera: Tenthredinidae) in Mts. Qinling from China, Zoological Systematics 41 (2), pp. 216-226 : 218-220

Macrophya brevicinctata Li, Liu & Wei , sp. nov.

( Figs 1–8 )

Female. Body length 8.0– 8.5 mm. Body black; following parts yellowish white: palpi, base largely of mandibles, labrum, clypeus, anterior parts of tegula, center parts of posterior margin of abdominal tergum 1, center of abdominal tergum 10, outer side of ventral side of fore coxa, apex of middle caxa, apical margin of hind coxa, an oval long macula in outer side of hind coxa, all trochanters, anterior margins of fore femur, anterior parts of middle femur, basal 1/5 of hind femur, anterior parts of fore tibia, ventral side of middle tibia, basal parts largely in ventral sides of fore and middle tarsi (except for apical margins black of all tarsomere), hind tarsomere 2–4 entirely and base of tarsomere 5; hind tibia largely with reddish brown maculae, apex with black ring maculae; hind tarsomere 1 reddish brown. Body hairs silver; setae on sheath curved, pale blackish brown. Wings hyaline, without smoky macula, stigma and veins largely blackish brown ( Fig. 1 ).

Dorsum of head feebly shiny, frons minutely and densely punctured slightly, interspaces between punctures narrower than diameter of puncture, with fine microsculpture ( Fig. 2 ); labrum and clypeus less shiny, with sparse and shallow punctures; temple with small smooth areas, with some punctures and fine microsculpture ( Fig. 3 ). Pronotum and mesonotum with punctures smaller and denser than punctures on head, interspaces with fine microsculpture; mesoscutellum not shiny, with minute punctures, round parts with some large and shallow punctures, microsculpture less rugose; mesoscutellar appendage with distinct microsculpture; metascutellum with some large and shallow punctures. Mesepisternum densely and shallowly punctured, interspaces with fine microsculpture; anepimeron rugosely punctured and wrinkled; anterior margin 1/4 of katepimeron strongly shiny, without puncture or microsculpture, posterior parts 3/4 of katepimeron with some shallow punctures and microsculpture; metepisternum with fine punctures and microsculpture; metepimeron less shiny, most parts with shallow and small punctures, upper corner of dorsal margin with coarse punctures; posterior margin of metepimeron extended downward and concave, appendage containing some shallow punctures and fine microsculptures ( Fig. 5 ). All abdominal terga feebly shiny, lateral sides of tergum 1 with some fine punctures, center nearly smooth; base of other abdominal terga with sparse and shallow punctures, microsculpture fine but distinct. Hind coxa and outer side of hind femur with minute and dense punctures, smooth interspaces narrow, feebly shiny. Surface of sheath coriaceous, with very fine punctures and microsculpture.

Middle of labrum weakly elevated, anterior margin truncate; clypeus weakly elevated, about 2 times broader than long, base broader than distance between lower corner of eyes; lateral sides distinctly convergent forwards, anterior margin incised to approximately 1/3 length of clypeus, lateral lobes obtuse, subtriangular-like ( Fig. 3 ); malar space 0.5 times as long as diameter of middle ocellus; middle of frons flat, about as high as top of eyes in lateral view; middle fovea shallow but distinct; lateral foveae small, short furrow-like; interocellar furrow distinct, postocellar furrow indistinct; POL: OOL: OCL = 3: 12: 8; postocellar area elevated, posterior margins oblique, 2 times broader than long, lateral furrows shallow and clearly divergent backwards; head strongly narrowed behind eyes in dorsal view, occipital carina complete. Antenna slender, 1.5 times longer than head and thorax together (3: 2), 1.2 times as long as abdomen (21: 17); antennomere 2, 1.3 times as long as broad, antennomere 3, 1.4 times as long as antennomere 4 (11: 8), 0.7 times as long as antennomeres 4 and 5 combined (22: 31), subapical antennomeres weakly compressed, not inflated, subapical antennomeres 6 to 9 not reduced ( Fig. 4 ). Mesoscutellum roundly elevated, with low peak and middle carina, posterior margins without lateral carina, slightly higher than top of mesoscutum; mesoscutellar appendage with distinct middle carina; metascutellum with low and short middle carina, mesopleuron and metapleuron as in Fig. 5 ; dorsal-posterior platform of mesepimeron as broad as diameter of middle ocellus; distance between cenchri 2 times breadth of cenchrus. Inner tibial spur of hind leg 0.7 times length of hind tarsomere 1 (30: 43); hind tarsomere 1 slender, as long as following 4 tarsomeres together; claw with inner tooth shorter than outer tooth. Ovipositor sheath slightly shorter than hind tarsomere 1 (31: 43), apical sheath slightly longer than basal sheath (19: 12), apical margin roundish in lateral view ( Fig. 6 ). Fore wing with crossvein 1cu-a joining cell 1M at basal 1/3, crossvein 2r-rs joining cell 2Rs at apical 3/8, cell 2Rs as long as cell 1Rs; petiole of anal cell in fore wing about 1.8 times longer than crossvein 2r-m and about 1.2 times longer than crossvein 1cu-a; anal cell of hind wing without petiole. Lancet with 19 serrulae ( Fig. 7 ), middle serrulae protruding subtriangular-like and each with 2 proximal and 9–11 distal teeth, subbasal teeth small, annular spine bands narrow, with sparse pilosity; 7th–9th serrulae at base as in Fig. 8 .

Male unknown.

Material examined. Holotype ♀, China, Hubei, Mt. Shennongjia, Honghuaduo (31°15′N, 109°56′E; elev. 1200 m), 3 July 2007, leg. Meicai Wei. Paratypes. 1♀, China, Shaanxi, Ankang, Huoditang Forest Farm, 11 July 2010, elev. 1539m, leg. Tao Li; 1♀, China, Hubei, Yichang, Mt. Shennongjia, Yinyuhe (31°34.005′N, 110°20.370′E; elev. 2 100 m), 21 July 2011, leg. Meicai Wei and Gengyun Niu, CSCS 11136. All deposited in CSCS.

Distribution. China (Shaanxi, Hubei).

Etymology. This new specific name “ brevicinctata ” is derivid from two Latin words, the “ brev- ” (short) and “ cinctus ” (circle), referring to the apex of the hind tibia with a short black ring

Remarks. The new species is similar to M. annulitibia Takeuchi, 1933 , but differs from the latter in having the hind tibia largely with reddish brown maculae at base, apex black, but without yellow macula; postocellar area 2 times broader than long; cell 2Rs as long as cell 1Rs, petiole of anal cell in the fore wing about 1.8 times longer than crossvein 1r-m and about 1.2 times longer than crossvein cu-a; middle serrulae of lancet in female each with 2 proximal and 9–11 distal teeth, not protruding mastoid-like. At present, the new species is the only species about the reddish brown legs. So it is easy to be distinguished by the characters with other species in M. annulitibia- group.

4.2

Figures

Figures 1 – 8. Macrophya brevicinctata Li, Liu & Wei, sp. nov. 1. Female, dorsal view. 2. Female head, dorsal view. 3. Female head, anterior view. 4. Female antenna. 5. Female mesopleuron and metapleuron. 6. Ovipositor sheath, lateral view. 7. Lancet. 8. 7 th – 9 th serrulae of lancet. Scale bars: 1 = 2 mm; 7 = 200 μm; 8 = 50 μm.