Cambridge Entomological Club, 1874
PSYCHE

A Journal of Entomology

founded in 1874 by the Cambridge Entomological Club
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This is the CEC archive of Psyche through 2000. Psyche is now published by Hindawi Publishing.

H. F. Wickham.
New North American Elateridae and Scarabaeidae.
Psyche 20(1):27-31, 1913.

This article at Hindawi Publishing: https://doi.org/10.1155/1913/74170
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19131 Wickham-New North American Elateridis and Scarabaidce 27 NEW NORTH AMERICAN ELATERIM AND
SCARABBIDB.
State University of Iowa, Iowa City.
Limonius venablesi sp. nov.
Finely pubescent, slightly shining. Form moderately elongate for this genus, sides subparallel for the greater part of the length. Black, with a slightly greenish tint, the tibiae and tarsi picescent, knees testaceous, elytra testaceous, each with two black spots, the anterior of which lies slightly in front of the middle and is nearly circular in outline, while the posterior is a little postmedian in position and elliptical, these markings being about equidistant from the side margin and the suture. Head with strong frontal concavity, the margin weak and obsoleteat middle, only slightly reflexed and scarcely emarginate the punctuation strong, deep, and close. Anten- nse (male) rather weakly serrate, the second and third joints subequal and together about as long or a little longer than the fourth which, in turn, does not differ much in length from those succeeding. Prothorax punctured similarly to the head but more closely at the sides, where there is a tendency to confluence, width equal to about five-sixths of the length, sides (in the male) nearly parallel except at the extreme base and apex, front angles rather prominent anteriorly and deflexed, hind angles rather long, a little divergent and blunt or rounded at the tips, indistinctly unicarinate. Scutellum finely punctured. Elytra subparallel at sides to about the apical third, thence rounding to the apices which are simple. Surface with distinct moderately impressed striae which are marked with coarse approximate punctures, the inter- spaces slightly convex with close, irregular, more or less confluent but rather fine punctuation. Under side of body closely and finely punctured, the prothoracic flanks more roughly than the trunk and abdomen. Length, 8.50 mm. The type is a male, collected at Vernon, B. C., May 14, by Mr. E. P. Venables, after whom it is named. I have had it in my
collection for three or four years.
A female from the same source
differs in having the prothorax more narrowed anteriorly and the antennae a trifle shorter. In the type, the antennae pass the apices of the prothoracic hind angles by the length of two joints. With the British Columbian specimens, I associate, as cotypes, three examples taken by Mr. W. M. Mann at Pullman, Wash., though two of these latter are much larger and have relatively somewhat shorter antennae. The largest of the Pullman specimens is about 14.60 mm. long, but the smallest scarcely exceeds the measurements of the type.
Psiche 20:27-10 (1913). hup //psyche rinclub org/2W20-027.htiiil



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If this species be assigned a place in the table of Candeze (Mono- graphic des Elaterides, III, p. 579) it would go into the second section in which the prosternal sutures are not deeply excavated anteriorly, and by the maculate elytra and carinate prothoracic hind angles would go next to L. stigma Hbst. However, it is not like any of the described North American species and may be recognized at sight by its size and coloration. Aphodius ioweasis sp. nov.
Oblong, moderately elongate, more parallel and less convex than usual, rufo- piceoua, the sides of the head and of the prothorax paler, elytra and legs reddish- castamom, surface strongly shining and polished. Ant- paler, the stem a little darker than the club. Head moderately convex, the three.tubercles low and broad but easily distinguishable, genie prominent but obtuse. The portion behind the row of tubercles is sparsely and extremely minutely punctured, somewhat more closely sod distinctly near the sides. CIvpeus with a shallow rounded anterior emargittetion, sides strong1 y divergent posteriorly, angles broadly rounded, margin narrowly reflated, surface with fine but well separated and rather sparse granules which fade out in the neighborhood of the frontal suture. Prothonix about one and a half times as broad as long, very little narrowed aateirioriy, the sides scarcely arcuate but broadly explanate, all the angles obtuse and pounded, basal marginal + line showing faintly on each side of the middle; disk strongly shining, quite impune- tate at middle, sides irregularly marked with deep punctures, sparse and large on tne submedian area but becoming smaller and more crowded near the margin and cribrate in the impression anterior to the hmd angles. Elytra at baw a little narrower than the prothorax, only slightly broader behind, humeri obtuse, surface strongly shining, finely and sharply striate, sitrife with regular, round, rather close, sharp punctures, interspaces fiat and smooth. Body beneath with a fine alutaceous sculpture and punctate as well, the punctures distinct but rather distant over most of the ventral surface, becoming smaller and closer on the sternal side pieces. Mesosternum bluntly carinate between the come. Anterior tibiffi very strongly tridentate and distinctly mendate above the upper tooth, the spur stout and curved, first tarsal joint shorter than the second. Middle tibite with the spurs din- similar, the major spur being slender and sharp, about twice as long ae the minor, this latter slightly hent and chisel-shaped at tip. Hind tibte fimbriate at apex with unequal spinnles, first tarsal joint shorter than the next three. All of the femora are sparsely punctate and hairy.
Len& 7.25 mm:
Collected at Lake Okoboji, Iowa, by Mr. A. 0. Thomas, who has kindly given me the specimen.
This is a true Aphodius with short scutellum, and belongs in Horn's group 1-8. From those described, it may be known by the tuberedate front, feebly emarginate clypeus, impunctate elytral intervals and punctate hind femora, this combination of characters



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1B131 WWwM,-New Nwth Ammhatt ElalmSfs and 8caraSwiths 29 not occurring iu any other North American species in that division of the genus. It is of special interest on account of its relation to this small assemblage of rare forms with explanate pronotal sides. Aphodius columbiensis ep. nov.
Form rather stout, strongly convex, broader posteriorly, blackish-piceous, opaque, legs reddish-piceous, antennte testaceous, cltib sooty. Head without tuber- cles, finely and sharply but not closely punctured, clypeus marginate at middle, angles distinct but rounded, sides diverging regulariy with scarcely any arcuation to the rounded, moderately prominent gem, margin feebly reflesed, clypeal punctua- tion fine and rather sparse. Prothorax with the sides parade! posteriorly, arcuate for a short distance anteriorly, all the angles rounded, surface alutaceous and having besides a double system of punctuation, the larger punctures fairly even1 y disposed (but allowing some smoother areas in the discal region and an impwelate median Sine) and ordinarily separated by approximately their own diameters, the fine pcnc- Hires irregular1 y scattered among the others. Basal marginal line distinct. Elytra
et base a little narrower than the prothorax, becoming broader behind the middle, humeri dentifom, disk very regularly but. finely stdate, the stri~e with well-marked distant punctures giving a catenate appearance to the grooves, interspaces flat, strongly ahitaceous and opaque but impunctate. Body beneath rather coarsely and sparsely punctate on the meso and metastema1 side-pieces, the mesosternum not carinate, abdominal punctuation indistinct, replaced by a longitudinal rugosity of the segments. Posterior and middle femora strongly but not densely punctate. Length, 5.25 mm.
Collected at Vernon, 3. C., by Mr. E. P. Venables, who gave me the type specimen.
This also is a genuine Aphodius, belonging to Horn's group R, in which it approaches A. opacusLec., but is at once distinguishable by the elytral strise being distinctly punctured. The fore tibiee are strongly tridentate, erenulato above the upper tooth, the edges fimbriate with yellow hairs. Both spurs of the middle tibise are sharply pointed at their apices and of normal form, differing only in size, those of the hind tibiae are very long, slender and sharp. The basal joint of the hind tarsus is about as long as the next three. The alutaceous sculpture appears to extend to all parts of the body, even showing on the legs.
hmala camancha sp. nov.
Size large. Surface subopaque. Form subparallel, ~ecalling Cyclocephala. Color yellowish, testaceous, head, tibii, and tarsi darker, reflexed edge of clypeus, prothoracic marginal bead, outer edging of fore tibk, d most of the spines and ridges on the middle and hind pairs piceous or blackish in somewhat varying degree,



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30 Psyche [February
eyes black. Head of normal size, front rather coarsely, densely, and more or less confluently but not deeply punctured, the vertex much less closely. Clypeus punctured similarly to the front but a little less strongly, the front edge nearly straight, angles broadly and evenly rounded, sides subparallel or slightly convergent posteriorly for about the basal half of the length, margin entire, somewhat strongly reflexed, frontal suture deeply impressed and about straight, Antenna1 club about equal in length to all of the remaining joints. Pronotum with an antemedian, shallow, dark-colored fovea each side, marginal bead strong all the way around, ,
basal lobe barely visibly emarginate or sinuate at middle, the pronotal disk punc- tured, rather sparsely over most of the surface but more closely at sides, the punc- tuation fine, the intervening spaces alutaceous. Scutellum punctured similarly to the pronoturn. Elytra a little more shining than the prothorax, distinctly and rather strongly striate, the striae punctured weakly on the disk, a little more strongly at the sides and near the base, the intervals of the dorsum distinctly alternating in height and breadth, the broader ones lower than the others and rather sharply punctured. The interval just external to the sutural stria is the widest and has the punctures arranged in a rather confused double series, while on the other two flat discal intervals the series is single. The intervals external to these are not punctured, except with the fine alutaceous marking that gives the appearance of subopacity to the elytra. Propygidium punctured, with a distinct tendency to transverse rugosity, pygidial sculpture finer and more rugose. Body beneath strongly hairy on the thoracic sternites but less so on the abdomen and femora, metasternum distinctly and closely but riot very deeply punctured, abdominal segments strongly shining and sparsely punctate. Legs of moderate thickness, the posterior tibise not dilated, the front pair bidentate, none of the claws cleft at tip, .
but those of the anterior tarsus are somewhat dissimilar, the inner one being a little twisted, suddenly bent near the base and with a marked thickening just external to this bend.
The two claws of the middle tarsus are about alike, except that the inner is a trifle more slender, those of the hind tarsus are similar to the middle ones. Length, 13.50 to 16.50 mm.
Described from six specimens kindly given me by Mrs. Lucy Brant Meade, who collected them Aug. 9, on Capitan Mt ., New Mexico.
By the non-protuberant mesosternum and nearly simple (not cleft) claws, this should go into the sub-genus Rhombonyx and belongs near A. cavifrons Lee. and A. carinifrons Bates, differing from both in the impressed (instead of carinate) frontal suture. It is also larger than either of the two species noted and differs from both in several minor characters which may be gathered from the description.
Anomala apacheana sp. nov.
Similar in form, size, color and luster to A. camancha, but is somewhat more shining and differs in the following particulars. Clypeus narrower and longer in



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Volume 20 table of contents