Tenthredo grahami Malaise 1945
Creators: name: Xiao, Wei
name: Niu, Gengyun
name: Wei, Meicai
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Tenthredinidae
Tenthredo
Tenthredo grahami

description: Key to species of Tenthredo grahami group.
1. Frons including frontal walls entirely black.........................................................................................................................................2
Frontal wall green .............................................................................................................................................................................. 10
2. First antennomere yellow green; penis valve without apical process................................................................................................... 3
First antennomere largely or entirely black; penis valve with or without apical process .....................................................................4
3. Mesepisternum green without black stripe; interspaces between punctures on mesonotum not smooth; microsculptured; mesepisternum flat; black frontal macula not extending backward along lateral of postocellar area (Distribution. China (Jilin), Northeastern Asia)............................................................................................................................... T. pseudolivacea Malaise, 1931
Mesepisternum green with a distinct black stripe; interspaces between punctures on mesonotum smooth, without distinct microsculpture; mesepisternum triangularly elevated at middle; black frontal macula much extending backward along lateral of postocellar area (Distribution. Kashmir, Hymalayas)............................................................................ T. nigromaculata Smith, 1878
4. Thorax mainly black, mesepisternum with 2 large yellow green maculae; middle and hind femora entirely black, each tibia yellow green with black base and apex; pterostigma black; postocellar area with a black middle macula (Distribution. China (Tibet)) .......... ..................................................................................................................................................................... T. nigrobullifera sp. nov.
Thorax green, mesepisternum with a narrow black stripe or entirely green; legs green with longitudinal black stripe; pterostigma green or pale brown.............................................................................................................................................................................. 5
5. Supraantennal tubercles quite low, clearly broader than height; black frontal macula transverse elliptical, not extending backward, bottom of middle fovea entirely green; postocellar area more than 2 times as long as broad; mesepisternum flat and entirely green; penis valve with a narrow but not very long apical process (Distribution. China (Gansu, Shaanxi, Henan)) ........................................ .................................................................................................................................................................. T. flatopectalina Wei, 2002
Supraantennal tubercles high, not broader than height; black frontal macula not transverse elliptical, distinctly extending backward, bottom of middle fovea partly or entirely black; postocellar area less than 2 times as long as broad; mesepisternum elevated at middle or with a distinct black stripe; penis valve with or without apical process...........................................................................................6
6. Dorsum of head with an Ω- like black macula ending with a hook near posterior corner of postocellar area; ratio of length and breadth of supraantennal tubercles not less than 3; penis valve without apical process (Distribution. Widespread in North and Central China, Russia Far East and Japan)......................................................................................................................... T. omega (Takeuchi, 1936)
Dorsum of head with a subquadrate black macula and without a hook near posterior corner of postocellar area; ratio of length and breadth of supraantennal tubercles less than 3; penis valve usually with a distinct apical process ......................................................7
7. Anterior incision of clypeus round, deeper than 0.3 times clypeus length; a transverse black band present between clypeus and supraclypeus; each abdominal tergite with a sickle like black band; mesepisternum flat; body length 10 mm. Liaoning .............................. ........................................................................................................................................................................ T. tombi Mallach, 1936
Anterior incision of clypeus shallow, less than 0.25 times clypeus length; a transverse black band absent between clypeus and supraclypeus; 2nd abdominal tergite with a black band much longer than black bands on other tergites; body length 12.0– 13.5mm ........ 8
8. Bottom of middle fovea black; mesepisternum flat and smooth; basal black band on each of abdominal tergite narrow, black band on 2nd tergite clearly narrower than half length of the tergite; ovipositor sheath very narrow; penis valve with a very long and slender apical process (Distribution. China (Hubei, Sichuan, Tibet))....................................................................... T. bullifera Malaise, 1945
Bottom of middle fovea green; mesepisternum distinctly elevated at middle and with fine microsculptures; basal black band on each of abdominal tergite broad, black band on 2nd tergite longer than half length of the tergite; ovipositor sheath broad; penis valve with a short and stout apical process (Distribution. Widespread in North and Central China)............. T. pseudobullifera Wei & Liu, 2013
9. Supraantennal tubercles clearly higher than broad; black bands on abdominal tergites 2–4 large and clearly separated, clearly larger than black bands on tergites 6–8; apical process of penis valve very long and slender (Distribution. China (Henan, Shanxi, Shaanxi and Sichuan)) .......................................................................................................................................... T. pseudograhami Wei, 2002
Supraantennal tubercles as high as broad; black bands on abdominal tergites 2–4 very narrow and indistinct, or quite large and not separated at middle; black bands on tergites 6–7 not smaller than black bands on tergites 3–4, or penis valve without apical process ..........................................................................................................................................................................................................10
10. Each black band on abdominal tergites not shorter than half length of each tergite........................................................................... 11
Black bands on tergites 1–4 clearly shorter than half length of tergite...............................................................................................12
11. Black bands on abdominal tergites 2–8 as long as half-length of tergite; penis valve round at apex and without process (Distribution. India) ................................................................................................................................................. T. gulmargi Singh & Saini, 1987
Black bands on abdominal tergites 2–8 longer than 0.7 times the length of tergite; penis valve with a long apical process (Distribution. China (Sichuan, Tibet)) ................................................................................................................................ T. megamaculata sp. nov.
12. Black bands on abdominal tergites 2–8 very narrow and about equal in length; penis valve round at apex, without process (Distribution. China (Shanxi, Henan, Sichuan))................................................................................................................. T. grahami Malaise, 1945
Black bands on abdominal tergites 6–7 broad, tergites 2–5 almost absent; penis valve with a very long and slender apical process (Distribution. China (Tibet)) ............................................................................................................ T. paragrahami Wei & Liu, 2013
description: Published as part of Xiao, Wei, Niu, Gengyun & Wei, Meicai, 2020, Two new species of the Tenthredo grahami group from China (Hymenoptera: Tenthredinidae), with a revised key to species, pp. 118-125 in Zoological Systematics 45 (2) on page 124, DOI: 10.11865/zs.202016, http://zenodo.org/record/4617204