Macrophya zhaoae species group, 1835

Liu, Mengmeng, Li, Zejian & Wei, Meicai, 2020, Key to the Macrophya zhaoae group (Hymenoptera, Tenthredinidae) with description of a new species from China, Alpine Entomology 4, pp. 65-72 : 65

Macrophya zhaoae species group

Diagnosis.

The Macrophya zhaoae group is a small species group, well defined by morphological characters within Macrophya . A diagnosis of the M. zhaoae group including body length, body color, morphological characters of body parts and external genitalia was provided by Li et al. (2018). Species of the M. zhaoae group can be recognized by the following characters ( Li et al. 2018): body mainly black, some apical segments bright yellowish-white; fore and middle legs yellowish-brown, hind leg yellowish-brown to orange-brown; face and frontal area distinctly depressed, top of middle ocellus distinctly lower than upper margin of compound eye; the postocellar area flat, clearly less than twice as broad as long; posterior corner of metepimeron without appendage; metabasitarsus sturdy, claw of hind tibia with inner tooth broader and longer than outer tooth.

Description.

Body mainly black. The following parts are always yellowish-white: palps mostly, center of mandibles, labrum, clypeus, postocellar area, antennomeres 7-9 at least, posterior margin and large maculae on lateral corners of pronotum, apical margin of tegula at least, double triangular maculae on bottom of prescutum, lateral round maculae on mesoscutellum, post tergite mostly, cenchrus, narrow macula on posterior margin of anepimeron, a large macula of katepimeron and a row of lateral maculae on abdominal terga 1-7 (8). Legs mostly orange-brown, parts black. Body hairs dense and short, mostly silver; setae on ovipositor sheath curved and long, blackish-brown. Wings hyaline, most veins and pterostigma blackish-brown. Vertex more or less shiny. Labrum elevated medially, anterior margin slightly truncate; clypeus roundly elevated, base clearly broader than distance between lower corners of eyes, lateral sides distinctly convergent apically, anterior margin shallowly incised to approximately 1/4-1/3 of its length, lateral corners somewhat short and broad, apical margins of lobe obtuse; malar space linear, approximately 0.5 × breadth of diameter of middle ocellus; frontal area and face clearly depressed, lower than top of upper margin of compound eye in lateral view; head narrowed behind eyes in dorsal view, occipital carina complete. Antenna slender, middle antennomeres more or less inflated. Mesoscutellum elevated, higher than top of mesonotum in lateral view; posterodorsal platform of mesepimeron as broad as diameter of middle ocellus; metepimeronal appendage with a small platform-shaped area; distance between cenchri 2.5 ×-3.0× breadth of a cenchrus. Inner tibial spur of hind leg approximately 0.6 × length of metabasitarsus, claw with inner tooth slightly longer and clearly broader than outer tooth. Ovipositor sheath shorter than metabasitarsus, setae on ovipositor sheath curved and long in dorsal view, apical margin roundish in lateral view. Fore wing with cross-vein cu-a joining cell 1M in basal 1/3-2/5, petiole of anal cell slightly shorter than cross-vein 1r-m; petiole of anal cell in hind wing 1/4-2/5 length of cross-vein cu-a.

In China, the Macrophya zhaoae group includes a new species from Zhejiang Province described here (the collection site of the new species at Mt. Jiulong is shown in Figure 3 ) and another four species from Guizhou, Hainan, Hubei and Zhejiang Provinces, China. They can be separated using the following key.

Figures

Figure 3. a, b. Habitat of the new species: the collection site at Mt. Jiulong in Zhejiang Province, China.