Macrophya motuoa, Li, Zejian, Liu, Mengmeng & Wei, Meicai, 2019

Li, Zejian, Liu, Mengmeng & Wei, Meicai, 2019, Three new species of the Macrophyamaculitibia group (Hymenoptera, Tenthredinidae) with a key to known species from China, Zoosystematics and Evolution 95 (1), pp. 37-48 : 42-43

Macrophya motuoa sp. n. Figures 29-36

Diagnosis.

This new species is similar to M. jiuzhaina Chen & Wei, 2005 in general morphological characteristics: body and legs mainly black; lancet narrow and long, serrulae somewhat oblique, almost linear, middle serrulae each with 2 proximal and 10-13 distal teeth, subbasal teeth somewhat small and clear in both, but can be distinguished from the latter by the following: postocellar area 2 × broader than long; metepimeronal appendage somewhat narrow and small, nearly triangular, apical margin slightly roundish, 2.5 × as long and broad as diameter of median ocellus; mesoscutellum distinctly elevated, posterior with a peak, lateral sides and center with slightly distinct carina, slightly higher than top of mesonotum; fore wing hyaline, below stigma without smoky macula. M. jiuzhaina : postocellar area 2.3 × broader than long; metepimeronal appendage broad and shallow, not triangular, 4 × as long and 3 × as broad asdiameter of median ocellus; posterior of mesoscutellum without a peak, center without a middle carina, with fine lateral carinae, as high as top of mesonotum; basal 2/3 of fore wing hyaline, apical 1/3 below stigma with smoky macula.

Description.

Holotype: female. Body length 9.5 mm. Body and legs black; following parts white: basal half of mandibles, anterior surface of fore femur partly and subbasal part in dorsal side of hind tibia. Body hairs pale brown, setae on sheath hairs pale black-brown. Wings hyaline, without smoky macula, stigma and veins black brown. (Fig. 29)

Dorsum of head shiny, frons with somewhat dense and rugose punctures, interspaces between punctures narrow, with fine microsculpture (Fig. 30); labrum and clypeus somewhat shiny, punctures on labrum sparse, punctures on clypeus somewhat dense, punctures largely shallow and flat. Dorsum of mesonotum somewhat shiny, punctures on mesonotum minutely and densely punctured, without smooth interspaces between punctures, with fine microsculpture; punctures on mesoscutellum somewhat large and rugose; mesoscutellar appendage dull, with indistinct punctures and microsculpture faint; mesepisternum somewhat shiny, minutely and densely punctured, interspaces with fine microsculpture; anepimeron dull, wrinkles rugose; anterior 1/5 of katepimeron smooth and shiny, without punctures or microsculpture; posterior 4/5 of katepimeron with distinct punctures and microsculpture; lateral region of metepisternum dull, with fine punctures and microsculpture; metepimeron somewhat shiny, depressed area of metepimeron with sparse and fine punctures, microsculpture faint; metepimeronal appendage somewhat shiny, with fine punctures and indistinct microsculpture, anterior with a smooth and obtuse carina (Fig. 33). All abdominal terga shiny, center of abdominal tergum 1 with fine microsculpture, lateral sides with distinct punctures; other abdominal terga with fine microsculpture and very sparse but distinct punctures. Hind coxa and outer side of hind femur somewhat shiny, with somewhat dense minute punctures, interspaces between punctures with fine microsculpture. Surface of sheath with fine punctures and faint microsculpture.

Anterior margin of labrum more or less truncate; clypeus slightly elevated in lateral view, broader than distance between the shortest distance between lower inner orbits; lateral sides convergent forwards, anterior margin shallowly incised to approximately 1/5 × length of clypeus; lateral corner subquadrate, apical margin short and obtuse (Fig. 31); malar space 0.8 × diameter of median ocellus; frons flat, as high as top of eyes in lateral view; middle fovea shallow and fine; lateral foveae slightly deep, furrow-like; interocellar furrow distinct, postocellar furrow indistinct; POL: OOL: OCL = 3: 7: 4; postocellar area slightly elevated, not higher than top of eyes, approximately 2 × broader than long (17: 8), lateral furrows deep and divergent backwards; head narrowed behind eyes in dorsal view, occipital carina complete. Antenna slender, 1.1 × longer than head and thorax together, 0.8 × longer than abdomen; antennomere II 1.2 × longer than broad (6: 5), antennomere III 1.4 × as long as antennomere IV (17: 12), 0.8 × as long as antennomeres IV and V together (17: 22), subapical antennomeres not dilated and slightly narrower than pedicel, weakly compressed, the ratio of antennomeres IV–IX = 60: 50: 40: 33: 30: 32 (Fig. 32). Mesoscutellum distinctly elevated, posterior with a peak, lateral sides and center with weak carina, slightly higher than top of mesonotum; mesoscutellar appendage with a high and acute middle carina, metascutellum with a low and short middle carina; dorsal-posterior platform of mesepimeron as broad as diameter of median ocellus; metepimeronal appendage narrow and small, nearly triangular, apical margin roundish, approximately 2.5 × as long and broad as diameter of median ocellus; mesopleuron and metapleuron as in Figure 33; distance between cenchri 2 × as broad as a cenchrus. Inner spur of hind tibia 0.7 × length of metabasitarsus (7: 10); metaba sitarsus slender, 1.1 × length of following four tarsomeres together (15: 14); claw with inner tooth slightly shorter than outer tooth. Ovipositor sheath slightly shorter than metabasitarsus (11: 12), apical sheath slightly longer than basal sheath (9: 7), apical margin somewhat narrow and rounded in lateral view (Fig. 34). Fore wing with vein cu-a joining cell 1M in basal 1/4, vein 2r joining cell 2Rs in apical 1/5, cell 2Rs as long as cell 1Rs, vein 2r-m slightly oblique, anal cell with a short vein and slightly shorter than vein 1r-m; petiole of anal cell in hind wing as long as vein cu-a. Lancet with 20 serrulae (Fig. 35), serrulae oblique and flat, middle serrulae each with two proximal and 10-11 distal teeth, subbasal teeth slightly small, annular spine bands narrow, the 8th -10th middle serrulae as in Figure 36.

Male. Unknown.

Type examined.

Holotype, ♀, China: Tibet: Motuo County, Hanmi, 29°22'N, 95°07'E, 2180 m, 16.vi.2009, leg. Zejian Li. Paratypes, Tibet: 3♀, CSCS142261, Linzhi District, Motuo County, 44K, 29°42.1'N, 95°33.967'E, 2730 m, 20.vii.2014, leg. Liwei Qi, Ethylacetate; Tibet: 1♀, CSCS142263, Linzhi District, Motuo County, 44K, 29°42.1'N, 95°33.967'E, 2730 m, 20.vii.2014, leg. Wei Xiao & Yilin Xiao, Ethylacetate.

Host plants.

Unknown.

Distribution.

China (Tibet).

Etymology.

The specific name is derived from the locality of the new species which is Motuo County, Tibet in China.