Macrophya yichangensis, 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 : 524-526

3.1.2 Macrophya yichangensis sp. nov. ( Figs 10–22 )

Diagnosis. The new species is similar to M. minutiluna Wei & Chen, 2002 from China. Compared with M. minutiluna , the new species is characterized by dorsal fron densely and coarsely punctured, without smooth interspace; clypeus entirely black; dorsal side of hind tibia without white macula subapically; fore wing hyaline, below stigma without smoky macula; middle serrulae of lancet with 7–8 distal teeth, subbasal teeth small. In M. minutiluna , dorsal fron slightly densely punctured, smooth interspaces between punctures narrow; clypeus largely black, lateral lobes with small, white maculae; a small white macula on dorsal side of hind tibia subapically; fore wing largely hyaline, below stigma with feeble and pale smoky, transverse maculae; middle serrulae of lancet with 5–6 distal teeth, subbasal teeth large.

Description. Female. Body length 6.5–7.0 mm. Body mostly black, except palp mostly pale brown and some white or reddish brown parts. The following parts white: a small and short triangular macula on anterior margin of labrum, basal 1/2 of mandibles, posterior margin of postocellar area, narrow band on posterior margin of pronotum, apical 1/3 of tergite 1, transverse maculae on posterior corners of tergite 2–5, apical margin of fore coxa, apical margin and stripes of middle coxa on outer side, apex and an oval macula of hind tibia on outer side basally, fore and middle trochanters on dorsal side, hind trochanter, small maculae of fore and middle femora on anterior sides apically, basal margin of hind femur, anterior side largely of fore tibia, apex on anterior side of middle tibia. The following parts reddish brown: center of middle tibia on anterior side, hind tibia except for base and apex with black maculae, most of middle tarsus, hind tarsus almost entirely. Body hairs silver, setae on sheath pale black brown. Wings hyaline, without smoky macula, stigma and veins black ( Fig. 10 ).

Dorsal head less shiny, fron densely and coarsely punctured, without smooth interspaces between punctures ( Fig. 12 ); labrum and clypeus with some large and shallow punctures, surface weakly coriaceous. Mesonotum less shiny, punctures on mesonotum as minute and dense as punctures on head, without smooth interspaces between punctures; mesoscutellum less shiny, with some large punctures, interspaces between punctures narrow; posttergite and metascutellum with distinct microsculptures and punctures; mesepisternum densely punctured, not distinctly coarse, interspaces with fine microsculptures between punctures, upper 1/2 with slightly large punctures, lower 1/2 with slightly minute punctures; anepimeron dim, with dense wrinkles; anterior margin of katepimeron smooth and shiny, without puncture or microsculpture; posterior area coarsely punctured and rugose, microsculptures distinct; metepisternum dull, minutely and densely punctured, without smooth area; metepimeron with shallow and sparse punctures, microsculptures distinct ( Fig. 15 ). All tergites less shiny, lateral tergite 1 shallowly punctured, other tergites with fine microsculptures and minute, indistinct punctures. Surface of sheath coriaceous, with indistinct punctures and fine microsculptures. Hind coxa and femur densely punctured on outer side, interspaces between punctures with fine microsculptures.

Labrum distinctly elevated, anterior margin truncated; clypeus elevated, slightly broader than distance between lower corner of eyes; lateral sides convergent forwards, anterior margin subarc and incised to approximately 2/5 length of clypeus, lateral lobes slightly narrow and long ( Fig. 13 ); malar space 0.6 times diameter of middle ocellus; fron slightly elevated, ocellus slightly higher than top of 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: 6; postocellar area weakly elevated, 2.2 times broader than long, lateral furrows slightly broad and deep, clearly divergent backwards; head strongly narrowed behind eyes in dorsal view, occipital carina complete. Antenna slender, 1.25 times longer than head and thorax together (5: 4), 0.9 times longer than abdomen; antennomere 2 about 1.3 times as long as broad; antennomere 3 about 1.9 times as long as antennomere 4 (19: 10), 0.9 times as long as antennomeres 4 and 5 combined (19: 20), antennomeres 6–9 weakly compressed ( Fig. 14 ). Mesoscutellum roundly elevated, without carina, as high as top of mesonotum in lateral view; posttergite with acute middle carina, metascutellum with distinct middle carina; dorsal-posterior platform of mesepimeron, equal to diameter of lateral ocellus; posterior corner of metepimeron subquadrate, without appendage; mesopleuron and metapleuron as shown in Fig. 15 ; distance between cenchri twice breadth of a cenchrus. Inner tibial spur of hind leg approximately 0.7 times length of metabasitarsus (21: 31); metabasitarsus slender, 1.2 times longer than following 4 tarsomeres together (31: 27); claw with inner tooth shorter than outer tooth. Ovipositor sheath slightly shorter than metabasitarsus (15: 16), apical sheath slightly longer than basal sheath (8: 7), apical margin roundish in lateral view ( Fig. 16 ). Fore wing with vein cu-a joining cell 1M at basal 1/4, vein 2r joining cell 2Rs at apical 1/3, cell 2Rs slightly longer than cell 1Rs; petiole of anal cell in fore wing 1.5 times longer than vein 1r-m; petiole of anal cell in hind wing 1/2 times length of vein cu-a. Lancet with 20 serrulae ( Fig. 17 ), middle serrulae weakly protruding and each with 1 proximal and 7–8 distal teeth, subbasal teeth small, annular spine bands slightly broad, spine dense; serrulae 8–10 at base as shown in Fig. 18 .

Male. Body length 5.5–6.0mm ( Fig. 11 ), body color and structure similar to female, following parts white: labrum, apical 1/2 of clypeus ( Fig.19 ), base of all coxae, all trochanters, anterior side of fore femur, apex largely of middle femur on anterior side, anterior sides of fore and middle tibiae, fore and middle tarsus almost entirely, apex of hind tarsomere 2 on dorsal side and 3–4 tarsomere largely; antenna as shown in Fig. 20 ; center of subgenital plate elevated, subgenital plate longer than broad, apical margin roundish, gonoforceps as shown in Fig. 21 ; penis valve as shown in Fig. 22 .

Holotype female, China, Hubei, Yichang City, Mt. Shennongjia, Guitouwan (31°28′N, 110°09′E; elev. 2 150 m), 25–28 May 2011, Ze-Jian Li leg., CSCS11022 . Paratypes: 1 female, China, Hubei, Yichang City, Mt. Shennongjia, Yazikou (31°30′N, 110°21′E; elev. 1 920 m), 26 May 2011, Ze-Jian Li leg., CSCS11025 ; 1 female, China, Hubei, Yichang City, Mt. Shennongjia, Yazikou (31°30′N, 110°21′E; elev. 1 920 m), 20 May 2011, Ze-Jian Li leg., CSCS11023 ; 1 male, China, Hubei, Mt. Shennongjia, Xiaolongtan (31°29′N, 110°18′E; elev. 2 200 m), 24 May 2011, Ze-Jian Li leg., CSCS 11027 ; 1 male, same data as holotype .

Distribution. China (Hubei).

Etymology. The specific name refers to the type locality, Yichang, Hubei Province.

Figures

Figs 10–22. Macrophya yichangensis sp. nov. 10. Adult female, dorsal view. 11. Adult male, dorsal view. 12. Female head, dorsal view. 13. Female head, front view. 14. Female antenna. 15. Female mesopleuron and metapleuron. 16. Ovipositor sheath, lateral view. 17. Male head, front view. 18. Male head. 19. Lancet. 20. The 8th–10th serrulae of lancet. 21. Gonoforceps. 22. Penis valve. Scale bars: 10–11=1 mm, 17, 21=100 μm, 18, 22=50 μm.