Macrophya coloritibialis Li, Liu & Wei, 2016

Liu, Mengmeng, Li, Zejian & Wei, Meicai, 2016, Two new species of flavomaculata-group of the genus Macrophya Dahlbom (Hymenoptera: Tenthredinidae) from China, Zoological Systematics 41 (3), pp. 300-306 : 302-303

Macrophya coloritibialis Li, Liu & Wei , sp. nov. ( Figs 1–8 )

Female. Body length 8.0– 8.5 mm. Body largely black, following parts pale yellow: palp largely, basal 1/2 of mandibles, lateral corners of pronotum with large maculae, tegula, mesoscutellum, a small macula on center of posterior margin of mesepisternum, lateral margins of abdominal terga 2–8 with long maculae, center and lateral posterior margins of abdominal tergum 10, base of every coxa, some stripes on outer side of middle coxa, an oval macula on base of outer side of hind coxa, every trochanter, base and apex of fore and middle femora, basal 2/5 of hind femur, base largely of middle tibia and middle 1/2 of hind tibia with a broad ring. Labrum largely, apical 1/3 of clypeus and legs largely yellowish-brown; all coxae except for apex with pale yellow maculae, middle of fore and middle femora with a broad ring and apical 3/5 of hind femur with black maculae. Body hairs silver, setae on sheath yellow. Wings hyaline, without smoky macula, vein C and vein Sc yellowish-brown, stigma and veins largely black brown ( Fig. 1 ).

Dorsal head feebly shiny; frons sparsely and shallowly punctured, microsculpture fine but distinct ( Fig. 2 ); labrum and clypeus less shiny, with some large and shallow punctures, microsculpture fine. Mesonotum not shiny, punctures on mesonotum very shallower and minuter than punctures on head, interspaces with fine microsculpture; mesoscutellum shiny, center without distinct punctures, but with fine microsculpture; mesoscutellar appendage dull, with some punctures and microsculptures. Mesopleuron feebly shiny, mesepisternum slightly densely punctured, interspaces narrow; anepimeron dull, with coarse wrinkles; anterior area of katepimeron smooth and shiny, without puncture or microsculpture, posterior area largely of katepimron with some large and coarse punctures and microsculptures; metepisternum dull, outer side with some minute punctures; metepimeron less shiny, with some large punctures ( Fig. 5 ). Abdominal tergum 1 less shiny, lateral sides with some shallow punctures, other area nearly smooth; other abdominal terga with minute and shallow punctures, microsculpture fine but distinct. Ventral side of hind coxa with dense and coarse punctures, less shiny; outer side of hind coxa and hind femur not densely but minutely punctured. Surface of sheath coriaceous, with indistinct punctures and fine microsculptures.

Labrum weakly elevated, anterior margin of labrum truncate; clypeus weakly elevated and subquadrate, base broader than distance between lower corner of eyes; lateral sides slightly convergent forwards, anterior margin arcuate and deeply incised to approximately 1/2 length of clypeus, lateral lobes long and narrow, lobe margin obtuse ( Fig. 3 ); malar space 0.8 times as long as the diameter of middle ocellus; frons slightly depressed, about as high as top of eyes in lateral view; middle fovea shallow and rounded; lateral foveae slightly deep, short furrow-like; interocellar furrow distinct, postocellar furrow indistinct; POL: OOL: OCL = 7: 11: 7; postocellar area weakly elevated, 2 times broader than long; lateral furrow slightly deep and divergent backwards; head narrowed behind eyes in dorsal view, occipital carina complete. Antenna slender, 0.9 times longer than head and thorax together, as long as abdomen; antennomere 2, 1.2 times as long as broad, antennomere 3, 1.7 times as long as antennomere 4, 0.9 times as long as antennomeres 4 and 5 together (8: 9), middle antennomeres slightly inflated, subapical antennomeres weakly compressed ( Fig. 4 ). Mesoscutellum weakly elevated, nearly flat, without middle carina or peak, with weak posterior carina, as high as top of mesonotum in lateral view; dorsal-posterior platform of mesepimeron as broad as diameter of middle ocellus; metepimeron without appendage; distance between cenchri 2 times breadth of a cenchrus; mesopleuron and metapleuron as shown in Fig. 5 . Inner tibial spur of hind leg 0.5 times length of hind tarsomere 1; hind tarsomere 1 slender, as long as following 4 tarsomeres together; claw with inner tooth shorter than outer tooth. Ovipositor sheath longer than hind tarsomere 1 (7: 6), apical sheath as long as basal sheath, apical margin round in lateral view ( Fig. 6 ). Fore wing with crossvein cu-a joining cell 1M at basal 1/3, crossvein 2r joining cell 2Rs at apical 1/3, cell 2Rs slightly longer than cell 1Rs, anal cell with a long petiole, about 1.5 times longer than crossvein 1r-m; petiole of anal cell in hind wing about 3/5 times longer than crossvein cu-a. Lancet with 21 serrulae ( Fig. 7 ), lancet slightly long and narrow, middle serrulae not protruding nearly, middle serrulae each with 1 proximal and 8–9 distal teeth, subbasal teeth small, annular spine bands narrow, 8th–10th serrulae at basal as shown in Fig. 8 .

Male. Unknown.

Holotype ♀, China, Gansu, Qingyang City, Zhengning County, Zhongwan Forest Farm (35°26′N, 108°34′E; elev. 1590 m), 1 May 2009, leg. Mingjun Tang. Paratype. 1♀, same data as holotype .

Distribution. China (Gansu).

Etymology. The specific name is derivid from two Latin words, “ color ” (colour) and “ tibialis ” (tibia), with reference to the hind tibia of the new species with different color maculae.

Remarks. The new species is similar to M. zhengi Wei, 1997, it is easy to be distinguished by the above key. As well as the new species is different from other species of this species group in lateral corners of pronotum with large maculae, mesoscutellum, tegula, posterior margin in lateral corners of abdominal terga 2–8 with long maculae, lateral sides and center of abdominal tergum 1 and all trochanters, pale yellow; labrum largely, apical 1/3 of clypeus and all legs largely, yellowish-brown; middle 1/2 of hind tibia with a broad and pale yellow ring.

Figures

Figures 1–8. Macrphya coloritibialis Li, Liu & Wei, sp. nov., female, holotype. 1. Dorsal view. 2. Head, dorsal view. 3. Head, anterior view. 4. Antenna. 5. Mesopleuron and metapleuron. 6. Ovipositor sheath, lateral view. 7. Lancet. 8. Serrulae 8th–10th of lancet. Scale bars: 1 =1mm, 8=50 μm, 7 =100 μm.