摘要
本文对我国异额萤叶甲属Macrima已知种作了总结,共9种,其中双裂异额萤叶甲Macrimabifida sp.nov.为新种。
In this paper, we have dealt with the genus Macrima, 9 species are included, one of them described as new to science. The type specimen is kept in the Insect Collections of the Institute of Zoology, Academia Sinica, Key to the Chinese species of Macrima
1. Antennal segment 3 longer than 2 .............................................................2.
Antennal segment 3 no longer than 2 ............................................................7.
2. Upper edge of frontal concavity with two processes....................................................3.
Upper edge of frontal concavity with the process less than 2 .............................................6.
3. Processes of upper edge of frontal concavity acute, close together, clypeus deeply excavated
..........................................................M. cornirta(Laboissiere)
Processes of upper edge of frontal concavity broader, more widely separated...........................4.
4. Antennal segment three 2 times as long as the second, elytra with hairs...... M. bifida sp.nov.
Antennal segment three not 2 times as long as the second, el)rtra without hairs .....................5.
5. Basal three segments of the abdominal sternites with one black spot on each side
.............................................................M. fcrrugina Jiang
Abdominal sternites yellow............................................... M. aurantiaca(Lab.)
6. Frontal concavity with a simple median ridge, elytra yellow..................M. straminea(Ogloblin)
Frontal concavity with a long median process, elytra reddish .................. M, rubricata(Fairm.)
7. Process of upper edge of frontal concavity situated below antenna .......................................8.
Process of upper edge of frontal concavity between antennal insertions, a small pine on eaeh side of
frons near to middle of eye............................ M. armata Baly
8. Elytra orange, clypeus with a bifid process in middle porsition, median process with a spherical
tip....................................................... M. yunnanensis(Lanb.)
Elytra whitish yellow, clypeus without any process in middle porsition, tip of median process thicked and oval..................................................... M. pallida(Lab.)
Mocrima bifida sp. nov. (fig. 1)
Length of body 6.5mm. General colour whitish yellow. Antennae brown, with the basal 3 segments yellowish. Scutellum, the base of elytra near the humeral angle, external margins of epipleura and the basal 1/3 of inner margins, mesopleuron, metasternite, tibia and tarsi blackish brown to black.
Head with fine punctures on vertex; beneath the upper edge of frental concavity with a median process, the dorsal surface with a middle longitudinal depressed, and the tip with long pale hairs. Two ridges divided the concavity into three portions. Clypeus trianglar and deeply excavated. Antennae exceed the middle of elytra. Elytra with sparsely pale hairs and close punctures on the surface. Anterior legs with the first tarsa flat and concave on ventral surface.
Holotype , Songpan County (32.6°N, 103.6°E), Sichuan Province, 4. VII. 1990, by Liu Ju-peng.
This new species is resemble to M. aurantiaca (Lab.), but differs from it by the hairs of elytra.
