Mimocagosima humeralis (Gressitt) Gressitt, 2008

Lin, Meiying, Li, Wenzhu & Yang, Xingke, 2008, Taxonomic review of three saperdine genera, Mandibularia Pic, Mimocagosima Breuning and Parastenostola Breuning (Coleoptera: Cerambycidae: Lamiinae: Saperdini), Zootaxa 1773, pp. 1-17 : 5-7

Mimocagosima humeralis (Gressitt) comb. nov.

( Figs. 6–11 )

Mandibularia humeralis Gressitt, 1951 , Longicornia, 2: 561, pl. 21, fig. 4 ( China: Fujian, Guangxi).

Description. Male: length: 17.5 mm, humeral width: 6.5 mm. Female: length: 17.0–22.0 mm, humeral width: 6.0–8.0 mm. Body black, reddish on tarsal claws and elytra. Head densely clothed with yellowish pubescence, with a small black spot on central frons, a large black area on occiput; genae black with some whitish pubescence behind eyes; antennae black, with gray pubescence on basal part of antennomeres 2–11. Prothorax densely clothed with yellowish pubescence, with a big black area covering more than half of pronotum and frontal half is smaller than basal half; a moderate black spot at middle of each side, behind spot with gray or yellowish pubescence. Scutellum black. Elytra red and densely clothed with yellowish pubescence, except on three maculae: one humeral, irregular; second near middle of disc at end of basal third, round; third on lateral side just behind basal third, irregular, larger than other two. Ventral surface with gray pubescence on prosternum, mesepimeron, central portions of meso- and metathoracic sterna and posterior borders of abdominal segments; legs black, basal 8 antennomeres with moderate long hairs beneath. Head not quite as broad as prothorx, widest at genae, barely concave between antennal insertions, fine and unevenly punctured. Lower eyelobes rounded-oblong, slightly lower (female) or slightly longer (male) than genae. Antennae moderately stout, about 15/19 (female) or 33/35 (male) as long as body; antennomere ratio: male: 20 5 28 2 17 14 1 13 12 1 10; female: 20 5 30 23 15 12 12 11 11 9 8. Prothorax much broader than long, frontal half wider than basal half, bluntly nodose in middle of each side, raised on median line posteriorly with a node before base, punctures on black area large, irregular, uneven and shagreen, with some irregular ridges. Elytra gradually narrower apically, not enlarged before apex, rounded apically, sparsely punctured. Legs stout, hind femur reaching middle of third abdominal segment. Male genitalia ( Figs. 10 a–10R): Tegmen length about 3.0 mm; lateral lobes slender, each about 0.6 mm long and 0.2 mm wide, with long setae apical half, with two small lobes furnished with short and fine hairs at the ventral base; with very short roof; ringed part elbowed in the widest portion, converging; basal piece not bifurcated distally; median lobe with median struts slightly curved, a little longer than tegmen (16:15); former subequal to latter; dorsal plate slightly shorter than ventral plate; ventral edge of median orifice weakly projected; median foramen extremely elongated; internal sac short, with three long rods and two very small ones at base, the two longest rods about 2.0 mm, shorter than tegmen. Ejaculatory duct single. Female genitalia ( Fig. 11 ): Setae of sternite 7–8 long, extending beyond apex. Spermatheca simple, slightly curved, about 1.4 mm long for a 17 mm adult. Tignum short, shorter than 1/3 of abdomen. Tignum 1.8 mm for an adult with a 7.5 mm abdomen in ventral view.

Diagnosis. Differs from M. ochreipennis Breuning in having antennae longer.

Remarks. At the time when Gressitt (1951) described Mandibularia humeralis based on two female specimens from Fujian and Guangxi, Mimocagosima had not yet been described. Gressitt put it in the genus Mandibularia Pic based on its long and large mandibules without considering its antennal length and elytral apex. Breuning (1968) described Mimocagosima based on a male specimen from Laos. Having examined these specimems, we found that Mandibularia humeralis should be transferred to Mimocagosima .

The paratype from Guangxi ( Fig. 9 ) has elytra more strongly narrower apically and scutellum reddish. We put a question mark on the distribution of “Guangxi”. More material is needed for further study.

Type specimens examined. Holotype: female, China: Fujian, Shaowu, Dazhulan, alt. 1200m, 1940. VII.25 ( SYSU); paratype: 1 female, Guangxi, Yaoshan ( IZAS).

Other specimens examined. China: 1 male and 1 female, Yunnan, Malipo, NW env., 1200–1700m, (N23×10–13', E104×37–40'), 1995. V.10–13, coll. L. +R. Businský (CHC).

Distribution. Fujian, Guangxi (?), Yunnan.

Figures

FIGURES 6 – 9. Mimocagosima humeralis (Gressitt) comb. nov. 6. male, from Yunnan. 7. female, from Yunnan. 8. female, holotype, from Fujian. 9. female, paratype, from Guangxi.

FIGURES 10 – 11. Genitalia of Mimocagosima humeralis (Gressitt) comb. nov. 10. male genitalia. a. dorsal view. b. lateral view. c. ventral view. R. rods of endophallus. 11. female genitalia, ventral view.