Macrophya elegansoma, Li & Liu & Wei, 2014

Li, Ze-Jian, Liu, Meng-Meng & Wei, Mei-Cai, 2014, Four new species of sanguinolenta-group of the genus Macrophya (Hymenoptera: Tenthredinidae) from China, Zoological Systematics 39 (4), pp. 520-533 : 528-530

3.2.1 Macrophya elegansoma sp. nov. ( Figs 23–30 )

Diagnosis. The new species is similar to M. rufoclypeata Wei, 1998 from China. Compared with M. rufoclypeata , the new species is different by head and thorax largely black, posterior corners of pronotum white, mesoscutellum entirely black; dorsum of head less shiny, densely and minutely punctured, without smooth interspaces between punctures; antenna not entirely black, scapus and pedicel entirely reddish brown; labrum and clypeus almost entirely white, basal margin of clypeus black; anterior margin subarc and incised to 1/4 length of clypeus, lateral corners subtriangular, apical margins obtuse; posterior margin of tergite 2 with feeble white maculae, lateral corners of tergites 3–5 with distinct, white maculae. In M. rufoclypeata , head, thorax and pronotum largely reddish brown; mesoscutellum entirely white; dorsum of head shiny, sparsely and shallowly punctured, smooth interspaces between punctures distinct; antenna entirely black; labrum and clypeus not entirely reddish brown, base of lateral lobes of clypeus with distinct, small and white maculae; anterior margin triangular and incised to 5/8 length of clypeus, lateral corners narrow and long, apical margins acute; lateral corners of abdominal tergites 2–5 with distinct, white maculae.

Female. Body length 6.0 mm. Body mostly black. The following parts white: base of the mandibles, palp largely, labrum except for apical margin with pale brown maculae, clypeus, 2 small maculae on the posterior margin of the postocellar area, posterior corners of the pronotum, posterior margin of tergite 1, broad maculae on posterior corners of tergites 3–5, center of abdominal tergite 10, base of fore and middle coxae, all trochanters, stripes on apical 1/2 of fore femur on anterior side, anterior side largely of fore tibia, fore tarsomere almost entirely, stripes of middle coxa on outer side, apex of middle femur on anterior side, anterior side of middle tibia except for apical margins with black maculae, middle tarsomere except for apical margins with black maculae, apex and an oval macula of hind coxa on outer side, a ring on apical 1/4 of metabasitarsus, hind tarsomere 2–4 almost entirely, hind tarsomer 5 except for claws. The following parts reddish brown: apical 1/3 on outer side and except for apex largely of hind femur on inner side with black maculae, hind tibia except for apex with black maculae, a ring on basal 3/4 of metabasitarsus, a ring on apex of hind tarsomer 2. Antennomeres 5–9 black brown. Outer margin of apical sheath pale reddish brown. Body hairs yellowish brown; setae on sheath black brown. Wings hyaline, without smoky macula, stigma and veins largely black brown ( Fig. 23 ).

Dorsal head less shiny, fron densely and shallowly punctured, without smooth interspaces between punctures, with fine microsculptures ( Fig. 24 ); labrum and clypeus with large and shallow punctures, surface weakly coriaceous. Mesonotum less shiny, punctures on mesonotum as minute and dense as punctures on head, interspaces between punctures with fine microsculptures; dorsum of mesoscutellum less shiny, with large punctures; posttergite with some shallow and large punctures; metascutellum with indistinct punctures, microsculptures fine. Mesepisternum minutely and shallowly punctured, interspaces between punctures with fine microsculptures; anepimeron not shiny, with dense wrinkles; anterior margin of katepimeron smooth and shiny, without puncture or microsculpture; middle area with indistinct punctures, microsculptures distinct; posterior area with some large punctures, microsculptures distinct; metepisternum not shiny, minutely and densely punctured; metepimeron with shallow and large punctures, microsculptures distinct ( Fig. 27 ). All tergites less shiny, lateral tergite 1 shallowly punctured, center with fine microsculpture; basal 1/3 of abdominal tergites 2–8 with distinct punctures, apical 2/3 with fine microsculptures. Surface of sheath coriaceous, with indistinct punctures and fine microsculptures. Hind coxa and outer side of hind femur shallowly punctured, microsculptures fine.

Labrum elevated, anterior margin of labrum truncated; clypeus weakly elevated, distinctly broader than long, slightly broader than the distance between the lower corner of the eyes; lateral sides distinctly convergent forwards, anterior margin subarc and incised to approximately 1/4 length of clypeus, lateral lobes subtriangular, apical margin obtuse ( Fig. 25 ); malar space 0.5 times the diameter of the middle ocellus; fron elevated, ocellus slightly higher than the top of the eyes in lateral view; middle fovea shallow but distinct; lateral foveae deep, furrow like; interocellar furrow distinct, postocellar furrow indistinct; POL: OOL: OCL = 5: 10: 8; postocellar area weakly elevated, 1.8 times broader than long, lateral furrows slightly shallow and deep, divergent backwards; head narrowed behind eyes in dorsal view, occipital carina complete. Antenna slender, as long as head and thorax together, clearly shorter than abdomen; antennomere 2 longer than broad; antennomere 3, 0.9 times as long as antennomere 4 and 5 combined (10: 11), antennomeres 6–9 weakly compressed ( Fig. 26 ). Mesoscutellum roundly elevated, without carina, slightly higher than the top of the mesonotum in lateral view; posttergite with acute middle carina, metascutellum with short middle carina; dorsal-posterior platform of mesepimeron equal to the diameter of the lateral ocellus; posterior corner of metepimeron subquadrate, without appendage; mesopleuron and metapleuron as shown in Fig. 27 ; the distance between the cenchri 1.5 times breadth of a cenchrus. Inner tibial spur of hind leg approximately 0.75 times length of the metabasitarsus (3: 4); metabasitarsus slender, approximately 1.14 times longer than following 4 tarsomeres together (8: 7); claw with inner tooth as long as outer tooth. Ovipositor sheath shorter than fore femur (20: 23), apical sheath as long as basal sheath, apical margin roundish in lateral view ( Fig. 28 ). Fore wing with vein cu-a joining cell 1M at basal 1/3, vein 2r joining cell 2Rs at apical 1/3, cell 2Rs as long as cell 1Rs; petiole of anal cell in the fore wing about 3/4 times longer than vein 1r-m; petiole of anal cell in the hind wing 1/2 times length of vein cu-a. Lancet short, with 15 serrulae ( Fig. 29 ), serrulae slightly flat and oblique, middle serrulae each with 1 proximal and 9–12 distal teeth, subbasal teeth minute, annular spine bands slightly broad, spine slightly dense; serrulae 8–10 at base as shown in Fig. 30 .

Male. Unknown.

Holotype female, China, Sichuan, Mt. Emei, Xixiangchi , 19 July 2001 (elev. 2 000 m), Mei-Cai Wei leg.

Distribution. China (Sichuan).

Etymology. The specific name is corresponding to the Latin “ elega ” and “ som ”, referring to its slender body.

Figures

Figs 23–30. Macrophya elegansoma sp. nov. 23. Adult female, dorsal view. 24. Female head, dorsal view. 25. Female Head, front view. 26. Female antenna. 27. Female mesopleuron and metapleuron. 28. Ovipositor sheath, lateral view. 29. Lancet. 30. The 8th–10th serrulae of lanmcet. Scale bars: 23 =1mm, 29=100 μm, 30=50 μm.