Geraeus minor Prena, 2009

Prena, Jens, 2009, A Review of the Species of Geraeus Pascoe and Linogeraeus Casey Found in the Continental United States (Coleoptera: Curculionidae: Baridinae), The Coleopterists Bulletin 63 (2), pp. 123-172 : 143-144

publication ID

https://doi.org/ 10.1649/0010-065x-63.2.123

publication LSID

lsid:zoobank.org:pub:D00E60FB-9B19-4546-98D2-98436F5CCA2E

DOI

https://doi.org/10.5281/zenodo.5301089

persistent identifier

https://treatment.plazi.org/id/F65A04C6-CA2E-4AD4-8B4F-6536B1B07D1D

taxon LSID

lsid:zoobank.org:act:F65A04C6-CA2E-4AD4-8B4F-6536B1B07D1D

treatment provided by

Valdenar

scientific name

Geraeus minor Prena
status

sp. nov.

Geraeus minor Prena View in CoL , new species

( Figs. 25, 26 View Figs , 57 View Figs , 74 View Figs )

Holotype male, labeled ‘‘ ARIZONA, S. C. Co.,/ Ruby – Arivaca Rd,/ Sycamore Cyn, 3,9809/ N 31.43, W 111.19,’’ ‘‘ Aug. 3, 2007,/ C. W. O’Brien,’’ ‘‘TYPUS/ Geraeus minor / Prena, 2009’’ (California Academy of Sciences , currently as longterm loan to CWOB).

Paratypes: 24 males, 18 females. United States: Arizona, Cochise Co., Huachuca Mts., outside E. entrance, Coronado National Memorial , 12 Aug 2007, W. B. Warner ( CWOB 2 ) ; Pima Co., Madera Canyon , 31 ° 439400N 110 ° 529510W, 8 Aug 2003, E. G. Riley ( TAMU 1 ) ; Santa Cruz Co., Ruby– Arivaca Road, Sycamore Canyon , 3 Aug 2007, C. W. O’Brien ( CWOB 2 , JPPC 1 ) ; Santa Cruz Co., 1 mi S Peña Blanca Lake , 6 Aug 1982, R. Anderson ( CMNC 2 ) . Mexico: Guerrero, 1 mi E Taxco , 14 Aug 1974, C. W. & L. O’Brien, B. Marshall ( BMNH 2 , CWOB 12 , JPPC 4 ) ; Mexico, 4.3 mi NE Ixtapan , 6 Jul 1974, Clark, Murray, Ashe, Schaffner ( TAMU 4 ) ; Morelos, Cuernavaca , 25 Aug 1944 [2X], Oct 1944, Jul 1965 [7X], Sep 1965, N. L. H. Krauss ( USNM 11 About USNM ) ; Morelos, Hujintlan [Huajintlán], 22 Aug 1956, R. & K. Dreisbach ( USNM 1 About USNM ) .

Description. Total length 2.1–2.6 mm, standard length 2.0– 2.4 mm; body elongate rhomboidal ( Fig. 25 View Figs ); integument black, distal portion of appendages often brown or reddish; scales white, elongate on dorsal side of body, wider and denser on ventral side and on pleurites (particularly in Mexican specimens); rostrum stout, evenly curved, gradually tapered, dorsal profile continuous with head, male 1.06–1.23X length of pronotum, female 1.08–1.23X length of pronotum ( US specimens in lower range), anteantennal portion of male 0.37– 0.41X length of rostrum, of female 0.35–0.45X length of rostrum ( US specimens in upper range), male without tubercle on submentum, funicle stout, club rather large; pronotum with greatest width at base, sides roundly narrowed to front, apical constriction subtle, dorsal punctation shallow and separate; prosternum unmodified, spines and folds absent, posterior line of tubulate constriction with moderately deep punctures, scales not radiating from central pore; elytral interstriae mostly with 2 more or less regular rows of appressed, elongate, white scales; male with ventrites 1 and 2 slightly depressed, both genders with ventrite 5 with apical depression; all legs with ventrodistal tibial spine; body of aedeagus dorsoventrally compressed, dorsal aspect as in Fig. 60 View Figs , internal sac slightly longer than apodemes, surface with non-sclerotized asperities, gonopore without sclerite.

Distribution. This species is known from central Mexico and extends into southern Arizona ( Fig. 74 View Figs ).

Temporal occurrence. July to October [7 dates].

Plant associations. Asteraceae : Ageratina adenophora (Spreng.) King and H. Rob. [as Eupatorium adenophorum ] (N. L. H. Krauss, observation).

Specific epithet. The name is the comparative of the Latin adjective parvus meaning smaller.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Curculionidae

Genus

Geraeus

Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF