288 PROCEEDINGS OF THE NATIONAL MUSEUM vol, 87 



MORDELLISTENA HONDURENSIS, new species 



FiGtJKE 16, I; 18, 6 



This species is most closely allied to sehioarzi^ new species, described 

 below, and may be separated from the latter member of the genus by 

 the difference in the maculation of the elytra, the difference in the 

 breadth of antennal segments 3 and 4, the peculiar shape of the distal 

 antennal segment, the additional tooth on the tarsal claws, and the 

 peculiar condition of the penultimate segment of the anterior and 

 intermediate tarsi. From xanthopyga Champion (1891, p. 344), 

 which it resembles in color, it may be distinguished by the shorter 

 length of the basal ridge of the posterior tibiae, the flavobrunneous 

 condition of the pronotum, and the difference in the shape of the 

 maxillary palpus. 



Length: 0.9-1.15 mm.; including anal style, 1.15-1.55 mm. Form 

 elongate, narrow, sides subparallel, narrowing only one-fourth from 

 apex of elytra, broadest near middle of pronotum. Head (including 

 antennae and mouth parts), pronotum, apex and middle of 

 metasternum, last two ventral abdominal segments, and anal style, 

 flavobrunneous; elytra piceous, with following flavous areas: a sub- 

 triangular, rounded, subbasal area reaching sides but not suture and 

 a broad, transverse, postmedian fascia extending entirely across disk 

 from lateral margins to suture. Surface densely covered with fine, 

 recumbent pubescence, partaking of ground color, a mixture of 

 flavous and piceous hairs on head and pronotum, giving these parts 

 a darker tinge, except along margins. 



Antennae 0.28-0.4 mm. long, reaching metacoxae, somewhat 

 thickened but not serrate; segments 3 and 4 equal in length; 5-10 

 each almost as long as 3 and 4 together, and distinctly broader; 11 

 one-half longer than 10, broadest medially, outer edge straight, mesal 

 margin rounded from middle to apex, the latter subacute. Distal 

 segment of maxillary palpi enlarged, subquadrate, mesal margin 

 straight, lateral and apical margins broadly rounded (fig. 16, I). 

 Pronotum but slightly broader than long (0.28-0.35 by 0.25-0.3 mm.), 

 sides rounded, basal angles obtuse, base arcuate, midbasal lobe short, 

 rounded. Scutellum small, broadly triangular. Elytra slightly less 

 than two and two-thirds times as long as broad (0.65-0.8 by 0.28-0.35 

 mm.), sides parallel to within one-fourth of apex, thence attenuate 

 and broadly rounded to apex, apices individually rounded. Inter- 

 mediate tibiae and tarsi equal in length; penultimate segment of 

 anterior and intermediate tarsi filiform, excavate beneath, bearing 

 fifth segment on middle of ventral surface. Posterior tibiae with 

 two oblique ridges, basal one extending three-fourths, other one-half, 

 across outer surface; basitarsi with two, second segment with one 



