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Plagithmysus platydesmae n. sp. 



Head and usually the thorax hlack, but the latter may be pitchy or 

 reddish down the middle. Ebtra brown or yellowish brown at the sides 

 and usually on the basal portion in front of the median black-pubescent 

 area. On the middle portion from the base of the furcate lines to the 

 tips they are darker, generally nearly black or dark brown. In one 

 example the dark part occupies all the middle right up to the base, only 

 the humeral section of the base being brown. Antennae dark, the scape 

 more or less red, and the following joints sometimes also red-tinged. 

 Femora red, black at the apex. 



Face densely clothed with yellow hair, the pronotal vittae dense, yel- 

 low, usually broad, the lateral ones occupying the whole deflexed sides, 

 except that they enclose or are deeply divided by a glabrous strip. 

 Elytra with a deep black tomentose spot across the suture towards the 

 base (as in the other members of the bishopi group), in front of this 

 with by no means dense, yellow hairs, and more or less roughly punc- 

 tured : the longitudinal lines furcate, of dense yellow hairs and with a 

 feeble line of the same color produced backwards from the tip of the 

 furcation on each side. On the apical portion of the elytra the punctures 

 become obsolete or subobsolete. Mesopleura with a continuous, or almost 

 continuous, band of dense yellow hair, and the abdominal segments 

 with a dense band of the same color, broken into spots if the segments 

 themselves are greatly distended. Hind tarsi with dense white hairs. 

 Breast beneath with a yellow band reaching from the front to behind the 

 middle coxae. Length, 13-18 mm. 



One example, which is certainly a female, has the glabrous area en- 

 closed in the band on the side of the pronotum highly polished to a 

 large extent; but another, which, from the appearance of the abdomen, 

 is also of that sex, has it dull, and densely punctured, as in the male. 



Most like P. coUaris of Maui, but with totally different pronotal orna- 

 mentation, and with the apical portion of the elytra much less definitely 

 punctured. 



IIab. Hawaii, Glenwood (^rareh 2, 1919, Swezey). Seven 

 examples bred from affected wood of Platydesma campanulata 

 bronght down from this locality to Honolulu. The description 

 is drawn up from these examples. All the other members of 

 the hishopi gronp are known to be attached to Pelea, which is 

 placed next to Platydesm-a in Hillebrand's ''Flora'\ P. hishopi 

 was bred by me from Zanfhoxyhim (also an allied tree) as 

 well as from Pelea. 

 Plagithmysus elegans Sharp. 



I possess the female of this species. It does not seem to 



