Usinger, R.L.

Proceedings of the Hawaiian Entomological Society

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633Notes and Descriptions of Ceratocombus(Hemiptera: Cryptostemmatidae)By ROBERT L. USINGERU. S. Public Health Service(Presented at the meeting of December 10, 1945)Several interesting cryptostemmatids have come to hand duringthe past two years, both from my own collecting and from materialsubmitted for identification. The new records and species ofCryptostemma have, been described elsewhere (Usinger, Ent. News,56: 238-241, 1945). In the present paper a new record is given forCeratocombus vagans McAtee and Malloch, and new species ofCeratocombus are described from Puerto Rico and Hawaii. I amindebted to E. C. Zimmerman and R. I. Sailer for the opportunityto study the Hawaiian specimens. These are of particular interestbecause they represent the first collection of Cryptostemmatidaefrom the Hawaiian Islands.Ceratocombus (Xylonannus) vagans McAtee and Malloch, 1925This species was originally described from Maryland with para-types from Washington, D.C., Virginia, New York, Florida andPanama. Barber (1939)* reported it from Puerto Rico. Uhler sniger (1904) from New Mexico was doubtfully referred here byMcAtee and Malloch and they suggested that Champion's pana-mensis (1900) may prove to be the same when the type is studiedin this connection. I am now able to add Georgia to the list andrecord another locality for Puerto Rico.One macropterous female and numerous nymphs were takenamidst loose frass beneath the bark of a decaying tree near thesummit of Brasstown Bald (approximately 4500 feet elev.),Georgia, Sept. 10, 1944 (R. L. Usinger).Both macropterous and brachypterous specimens were very abundant on the ground beneath leaf mold and numerous small fruitsof a fallen Sierra palm near the summit of El Yunque, Puerto Rico,April 29, 1945 (R. L. Usinger).Ceratocombus (Xylonannus) hawaiiensis Usinger, new speciesSuboval in form and rather uniformly brownish to castaneous in color.Head one-third broader, eyes included, than long, 12:: 9. Eyes one-fourthas wide as interocular space, 2:: 8. Vertex smooth, moderately convex.* Dates in parentheses refer to the bibliography at the end of the paper. [Ed.] .Proc. Haw. Ent. Soc, Vol. XII, No. 3, May, 1946.634Clypeus broad, parallel-sided and slightly inflated. Rostrum surpassing pos-2er5°^C9X9e> ^ pr°pOrtion of seSments 2:9J4:7J4. Antennal proportionsPronotum over twice as broad across humeral angles as long on medianline, 17:: 8, and slightly shorter than head, 8:: 9. Disk only moderately convex, smooth, the anterior collar marked by a transverse impression laterallybehind eyes, briefly transversely foveate anteriorly at middle. Lateral marginsteebly rounded, sinuate at anterior constriction. Posterior margin broadlydeeply concave. 'Scutellum broader than long, 9:: 7, subflattened and impressed with twominute foveae near middle; sides nearly straight to acute apex.Hemelytra presumably complete, the distance from tip of clavus to apex ofmembrane greater than distance from base of corium to tip of clavus, 16:: 14Venation as in vagans McAtee and Malloch, but with the two apical cellsequal in size.Under surface as in vagans, the male genitalia agreeing with the illustrations of McAtee and Malloch and with Puerto Rican specimens of vagans.Color uniformly pale brown, the hemelytra translucent, the eyes reddish,anterior portion of head and appendages pale. Under surface brown toochraceous.Size: Length 1.3 mm., width (pronotum) 0.5 mm. (hemelytra) 0.62 mm.Holotype, macropterous female, Waipahee, Kauai, T. H. Jan. 13,1944, under bark of dead tree (N. L. H. Krauss). Allotype, male,and one female paratype, macropterous, same data as type. Theholotype and allotype are deposited in B. P. Bishop Museum,Honolulu, T. H.Hdwaiiensis is similar to vagans in every way except for theform and proportions of the head and pronotum. These proportions differ strikingly in the two forms of vagans as follows:brachypterous form—head scarcely broader than long, 11:: 10;eyes small, one-fourth as wide as interocular space, 2::8; pronotum strongly convex, nearly parallel-sided, less than twice as broadas long; macropterous form—head distinctly broader than long,10*^:: 8; eyes larger, nearly half as wide as interocular space,2y2 :: 6; pronotum twice as broad as long, 14:: 7.In hawaiiensis the eyes are small as in brachypterous vaganswhile the head is relatively broad as in macropterous vagans. Thepronotum is even wider than in macropterous vagans and has convex side margins in contrast to concave margins in vagans. Ingeneral appearance the head of hawaiiensis is more robust and lessstrongly narrowed in front of the eyes and the pronotum is broadwith sides convex. These characteristics served to distinguishhazvaiiensis from the long series of specimens of vagans which Istudied in the U. S. National Museum collection.Ceratocombus (Ceratocombus) yunquensis Usinger, new speciesElongate-oval, attenuated anteriorly, the surface above opaque; black, distinctly marked with a yellow longitudinal fascia on inner half of each corium,these fasciae almost or quite joining an arcuate fascia which crosses apices635of coria and base of membrane. Hairs on upper surface, except head, veryshort and sparse, confined to margins and to veins of hemelytra.Head broader than long, 12:: 9; the eyes, seen from above, about one-thirdas wide as interocular space, 2^4:: 7; eyes touching anterolateral angles ofpronotum; ocelli contiguous with inner margins of eyes; surface smooth,impunctate, naked and slightly convex basally; transversely wrinkled andbeset with long, curved hairs apically. A long bristle behind each ocellus andanother near front of eyes. Rostrum reaching to middle of intermediate coxae,the proportion of segments 3:8:7. Antennae as long as head, pronotum, andscutellum together, the proportion of segments as 2}^ : 5:10: 9.Pronotum over twice as broad behind as long on median line, 18:: 8, andslightly shorter than head, 8:: 91/*; anterior collar obscure except near depressed anterolateral angles, lateral margins straight, with a prominent,anterolaterally directed bristle at anterior fourth; front margin slightly concave, hind margin broadly concave.Scutellum broader at base than long, 12:: 9, feebly convex, the sides sinuate,subacute at apex.Hemelytra complete, very long and broadened apically, the membranealmost as long as corial margin and four-fifths as wide. Corial marginscarcely arcuate, the disk subflattened laterally, convex on inner two-thirds,apex narrowly deflected beyond brief fracture. Venation as figured by Mc-Atee and Malloch for areolatus except that the outer vein emanating fromdiscal cell does not curve outward toward cuneal fracture but continuesstraight to wing margin.Color dull to glossy black above with *ochraceous anterior two-thirds ofhead, a bright yellow fascia arising at base of corium and continuing alonginner corium, occupying the greater part of inner coriurn between emboliarand claval sutures. The yellow extends to embolium and outer clavus atextreme base. Apically the fascia narrows abruptly or is briefly interruptedbefore transverse apical fascia. The latter arises at and just beyond sub-apical fracture. It does not reach apex of corium at lateral margin butextends broadly inward and crosses apical margin of corium on inner half,thence continuing across base of membrane. Membrane pale sirioky whitealong outer margin. Rostrum and first two antennal segments pale, apicalantennal segments brown. Under surface of head recldish-ochraceous, elsewhere brownish with pale pubescence, the legs pale with brown at middle ofcoxae and femora.Size: Length 1.7 mm., width'(pronotum) 0.52 mm. (hemelytra) 0.8 mm.Holotype, female, and two female paratypes, Sierra palm forest,El Yunque, Puerto Rico, April 29, 1945 (R. L. Usinger). Thesespecimens were taken beneath leaf mold and numerous small fruitsof a fallen Sierra palm in company with the much more abundantCeratocombus vagans. The holotype is deposited in the U. S.National Museum.Yunquensis is closely related to fasciatus Uhler from Grenadaand St. Vincent, but differs from that species in hemelytral markings and in its larger size. It runs to brasiliensis Reuter in MeAteeand Malloch's key, but that species lacks the distinctive yellowfasciae. Bifenestratus Poppius (1910) from the island of Guadeloupe also belongs near here but lacks the distinctive markings ofyunquensis.636Barber, H. G. 1939. Insects of Porto Rico and the Virgin Islands—Hemiptera-*Heteroptera. New York Academy of Sciences. Scientific Survey of PortoRico and the Virgin Islands, 14, part 3:263-441 (405).Champion, G. C. 1900. Biol. Centr.—Am. Insecta. Rhyn. Heter., 2:336.McAtee, W. I,, and J. R. Malloch. 192& Revision of bugs of the familyCryptostemmatidae in the collection of the United States National Museum.Proc. U. S. Nat. Mus., 67 (13) : 1-42, pis. 1-4.Poppius, B. R. 1910. Neue Ceratocombiden. Ofv. Finska Vet.-Soc. Fqrh.,52A(l):l-14,2figs.Uhler, P. R. 1904. List of Hemiptera-Heteroptera of Las Vegas HotSprings, New Mexico, collected by Messrs. E. A. Schwarz and Herbert S.Barber. Proc. U. S. Nat. Mus., 27:349-364.Usinger, R. L. 1945. Notes on the genus Cryptostemma with a new recordfor Georgia and a new species from Puerto Rico. EJnt. News, 56:238-241.

Notes and Descriptions of Ceratocombus (Hemiptera: Cryptostemmatidae)

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Notes and Descriptions of Ceratocombus (Hemiptera: Cryptostemmatidae)

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