Alcathousiella polyrhaphoides ( White, 1855 )

Nascimento, Francisco E. de L., Monné, Miguel A. & Wappes, James E., 2021, A review of the genus Alcathousiella Monné, 2005 (Coleoptera, Cerambycidae), European Journal of Taxonomy 757 (1), pp. 37-49 : 45-47

publication ID

https://doi.org/10.5852/ejt.2021.757.1411

publication LSID

lsid:zoobank.org:pub:1A535FB2-E03A-4390-8FBF-E7D2D3524923

DOI

https://doi.org/10.5281/zenodo.5055989

persistent identifier

https://treatment.plazi.org/id/03D29312-4263-5122-FD93-9409FE43FD8D

treatment provided by

Felipe

scientific name

Alcathousiella polyrhaphoides ( White, 1855 )
status

 

Alcathousiella polyrhaphoides ( White, 1855)

Figs 5–8 View Figs 1–8. 1–4 , 9–11, 13–15 View Figs 9–18. 9–11, 3–15 , 19 View Fig

Alcidion polyrhaphoides White, 1855: 394 .

Amniscus polyrhaphoides – Bates 1863: 103. — Lacordaire 1872: 762.

Alcathous polyrhaphoides – Thomson 1864: 24. — Chemsak et al. 1992: 133.

Differential diagnosis

This species is characterized by the triangularly projected ( Fig. 15 View Figs 9–18. 9–11, 3–15 ) outer angle of elytra, protarsomeres in males with dense, longer blackish setae ( Fig. 11 View Figs 9–18. 9–11, 3–15 ), and by the thicker femoral claves.

Material examined

COLOMBIA • 1 ♂; Huila, Municipio Palestina PN, Guacharos, Purce ; 01º40′25″ N, 76º13′29″ W; 2200 m a.s.l.; Viktor Sinyaev leg.; MZSP GoogleMaps 1 ♀; Valle del Cauca, 4 km NW San Antonio; 6500 ft; 20 Oct. 1958; A.H. Miller leg.; EMEC .

VENEZUELA • 1 ♂; Aragua, Rancho Grande ; 1100 m a.s.l.; 25–26 Jan. 1978; J.B. Heppner leg.; cloud forest; blacklight trap; USNM 1 ♂; same collection data as for preceding; 17–20 Jan. 1978; USNM 1 ♂; same collection data as for preceding; 8 May 1973; Günther Ekis leg.; USNM 1 ♂; same collection data as for preceding; 30–31 May 1988; M. Epstein leg.; UV light trap.; USNM 1 ♂; same collection data as for preceding; 7 Sep. 1967; J. Salcedo and L. Rodriguez leg; MZSP 1 ♀; Aragua, Geremba ; 2050 m a.s.l.; 14 Jun. 2008; R. Rouche leg.; AACP 1 ♂; same collection data as for preceding; 18 Oct. 2010; R. Rouche leg.; AACP 1 ♂; same collection data as for preceding; 13 May 2016; AACP 1 ♂; same collection data as for preceding; 15 Nov. 2017; R. Rouche leg.; AACP .

BOLIVIA • 4 ♂♂; Santa Cruz, Refugio Los Volcanes ; 3400–4200 ft; 18º06′ S, 63º36′ W; 16–20 Sep. 2012; Wappes, Skelley, Bonaso and Hamel leg.; ACMT GoogleMaps 1 ♀; same collection data as for preceding; 15 Sep. 2012; ACMT GoogleMaps 1 ♀; same collection data as for preceding; 25 Oct. 2011; FWSC GoogleMaps 1 ♂; same collection data as for preceding; 27–28 Oct. 2011; ACMT GoogleMaps 2 ♂, 1 ♀; 4 km N of Bermejo, 1045– 1350 ft, 18°06′ S, 62°36′ W, 17–24 Oct. 2014; ACMT GoogleMaps 1 ♂; same collection data as for preceding; 1000–1200 m a.s.l.; 18°06′ S, 62°36′ W; 29 Oct. 2011; Wappes and Skillman leg.; ACMT GoogleMaps 1 ♂, 1 ♀; same collection data as for preceding; Skillman and Wappes leg.; FWSC GoogleMaps 3 ♂♂; same collection data as for preceding; 12 Dec. 2012; Skillman and Wappes leg.; FWSC GoogleMaps 2 ♂♂; same collection data as for preceding; 4 Dec. 2013; Skillman and Wappes leg.; FWSC GoogleMaps 1 ♀; same collection data as for preceding; 1000–1200 m a.s.l.; Wappes & Skillman leg.; ACMT GoogleMaps 1 ♀; same collection data as for preceding; 16 Dec. 2013; Skillman and Wappes leg.; FWSC GoogleMaps .

PERU • 1 ♂; Junín, Satipo, Rio Venado Village ; 2 May 2018; AACP .

Redescription

Male

COLOURATION. Integument mostly brown, darker brown in some areas. Femoral peduncles, mouthparts with yellowish-brown integument (except mandibles dark brown, blackish toward extremities).Anterior sixth of elytra light brown; anterior two thirds mostly brown (especially on the small scattered tubercles); posterior third slightly yellowish green (vide variability).

HEAD. With dense, greyish pubescence, partially obscuring integument. Lower eye lobe at least 1.2 times as tall as genae length. Upper eye lobes separated by 2.5 times the width of an upper eye lobe.

THORAX. Prosternal process about as wide as ¼ the procoxal diameter. Mesoventral process about 0.6 of the mesocoxal diameter. Metaventrite with moderately long and dense greyish setae. Scutellum subrounded apically, covered with greyish pubescence in a median line and fuscous on sides.

ELYTRA. With erect yellowish setae on centro-basal crest; elytral surface deeply punctate; elytral apex with outer angle largely triangle projected, sutural angle with minute projection. Pubescence as follows: greyish white band, from humeri converging posteriorly towards suture at elytral middle (not reaching it), with a narrowed band converging forward (reaching suture) forming a W-shaped area; greyish band diverging from angles of W-shaped area to posterior third, towards epipleura; epipleura with small rounded spots of brownish pubescence. Areas between greyish white patch, darkened; posterior third mostly covered by yellowish brown pubescence; with irregular areas of greyish pubescence; elytral fifth with M-shaped area of brownish pubescence.

LEGS. Femora with diameter of clava more than 3 times peduncle diameter; distal half partially covered by greyish pubescence, with a patch of fuscous pubescence; tibiae with greyish pubescence, with a preapical and median ring of fuscous pubescence; metatarsomere I slightly longer than remaining together.

ABDOMEN. Ventrites with greyish pubescence, denser laterally.

Variability

The integument coloration at posterior third of elytra varies from dark to light brown (especially in specimens from Venezuela). Also, the greyish pubescence may be denser in some specimens ( Fig. 10 View Figs 9–18. 9–11, 3–15 ). The posterior third of elytra varies from slightly yellowish green to light or darker brown. In some specimens (especially those from Peru and Bolivia) the elytral apex may be more angular but not with

an elongate spine as in A. giesberti sp. nov. The posterior M-shaped fascia on elytral fifth is reduced to a transverse band. The femoral peduncles vary from brown to yellow in colour.

Measurements (in mm)

Male/female: total length, 7.7 – 11.2 / 7.0 – 9.0; prothorax length, 1.2 – 2.6 /1.4 – 2.5; prothorax width, 2.0 – 3.5/ 1.9 – 2.8; elytral length, 5.2 – 8.0 /5.6 – 6.2; humeral width, 3.0 – 5.0/ 3.4 – 4.0.

Distribution

Known from Ecuador and Venezuela; herein it is recorded from Bolivia, Colombia and Peru (new country records) ( Fig. 19 View Fig ).

MZSP

Brazil, Sao Paulo, Sao Paulo, Museu de Zoologia da Universidade de Sao Paulo

EMEC

USA, California, Berkeley, University of California, Essig Museum of Entomology

USNM

USA, Washington D.C., National Museum of Natural History, [formerly, United States National Museum]

FWSC

Fred W. Skillman

MZSP

Sao Paulo, Museu de Zoologia da Universidade de Sao Paulo

EMEC

Essig Museum of Entomology

USNM

Smithsonian Institution, National Museum of Natural History

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Cerambycidae

Genus

Alcathousiella

Loc

Alcathousiella polyrhaphoides ( White, 1855 )

Nascimento, Francisco E. de L., Monné, Miguel A. & Wappes, James E. 2021
2021
Loc

Alcathous polyrhaphoides

Chemsak J. A. & Linsley E. G. & Noguera F. A. 1992: 133
Thomson J. 1864: 24
1864
Loc

Amniscus polyrhaphoides

Lacordaire J. T. 1872: 762
Bates H. W. 1863: 103
1863
Loc

Alcidion polyrhaphoides

White A. 1855: 394
1855