Chaetophloeus hispidus, OPITZ, 2004

OPITZ, WESTON, 2004, Classification, Natural History, And Evolution Of The Epiphloeinae (Coleoptera: Cleridae). Part Ii. The Genera Chaetophloeus Opitz And Plocamocera Spinola, Bulletin of the American Museum of Natural History 2004 (280), pp. 1-82 : 23

DESCRIPTION OF CHAETOPHLOEUS SPECIES

Chaetophloeus hispidus , new species Figures 26, 28–31, 33–39 , 126; map 12

HOLOTYPE: Male. Brazil: RS, S. Francisco de Paula, Pro­Mata, 22.XI.1999, Ex. Araucaria angustifolia , leg.: Roland Mecke (MCNZ). (Specimen card mounted, sex label affixed to paper card, white, machine printed; locality label, white, cursive, MCNZ repository label white, machine printed; number label (R 2488), white, machine printed; collection label with number (215.508), white, outlined, machine printed; holotype label red, machine printed.) The specimens identified as Plocamocera in Mecke et al. (2001: 113) involve members of this species.

PARATYPES: Fifty­nine specimens. Fiftyeight specimens from the same locality as the holotype ( MCNZ, 3; WOPC, 3), 12­XI­1997 ( WOPC, 1), 12­XII­1997 ( MCNZ, 1), 9­I­ 1998 ( WFBC, 1), 18­II­1998 ( MCNZ, 1), 19­ II­1998 ( MCNZ, 1; WOPC, 1), 4­I­1999 ( WOPC, 1), 25­I­1999 ( MCNZ, 2), 10­XI­ 1999 ( MCNZ, 1; WOPC, 1), 25­XI­1999 ( MCNZ, 4; WOPC, 1), 6­XII­1999 ( MCNZ, 1), 7­XII­1999 ( MCNZ, 2; WOPC, 6), 14­ XII­1999 ( MCNZ, 2; WOPC, 1), 20­XII­ 1999 ( MCNZ, 4; WOPC, 2), 4­I­2000 ( MCNZ, 2), 6­I­2000 ( MCNZ, 3), 25­I­2000 ( MCNZ, 2), 27­I­2000, ( MCNZ, 1), 31­I­ 2000 ( MCNZ, 1), 8­II­2000 ( MCNZ, 1), 11­ II­2000 ( MCNZ, 1), 21­II­2000 ( MCNZ, 1), 24­II­2000 ( MCNZ, 1) ; same locality, 29­VI­ 1999, Marcia Silva Barbosa ( MCNZ, 1), 2­ IX­1999, Marcia Silva Barbosa ( MCNZ, 1), 28­X­1999, Marcia Silva Barbosa ( WOPC, 1), 5­XI­1999, Marcia Silva Barbosa ( WOPC, 2): Brazil: Nova Teutonia: II–1978, F. Plaumann ( WOPC, 1) .

DIAGNOSIS: Members of this monotypic genus can be conveniently distinguished from other epiphloeines by the profuse distribution of bristlelike setae on the head pronotum, and elytra. Further, from its sister genus Plocamocera , Chaetophloeus specimens are conveniently distinguished by the considerably shorter filamentous sensilla trichodea on the antenna. In Plocamocera the gula is crescentic, whereas in Chaetophloeus the gula has a more trigonal shape (compare figs. 28 and 126).

DESCRIPTION: Body length, width, form, and integumental color as in generic description. In addition, lower frons castaneous, upper frons and epicranium piceous; pronotum narrowly castaneous along anterior and lower lateral margins; elytron light­castaneous at humerus and sporadically vested with short silvery decumbent setae that are most prominent as three feebly formed setal pencils at elytral basal third, silvery setae also form oblique broad line at elytral apical half. Head, thorax, and abdomen as in generic description. In addition, frons distinctly concave, elytral disc depressed behind humerus, elytral punctations prominent throughout disc and not arranged in longitudinal rows, and fifth abdominal sternum narrowed distally in females, evenly arcuate in males; aedeagus as in figure 35.

VARIATION: The shape of the fifth visible abdominal sternum is sexually dimorphic. In females it is narrowed distally, whereas in males it is not narrowed distally.

NATURAL HISTORY: Mecke et al. (2001) studied the insect fauna associated with Araucaria trees. Among the insects that were found to frequent these trees were specimens of C. hispidus , n. sp., which readily emerged from Araucaria angustifolia (Bert) O. Kuntze. The available specimens were collected during January, February, June, October, September, November, and December.

DISTRIBUTION (map 12): These beetles are known only from southern Brazil.

ETYMOLOGY: The specific epithet, hispidus , is a Latin adjectival meaning ‘‘bristly’’. I refer to the bristlelike setae on the dorsum of these beetles.

Figures

Fig. 26–39. Chaetophloeus hispidus. 26, Habitus. 27, head, frontal view. 28, head, ventral view. 29, antenna. 30, labrum. 31, mesonotum. 32, metendosternite. 33, maxilla. 34, mandible. 35, aedeagus. 36, spicular fork. 37, body outline, lateral view. 38, pronotum, ventral view. 39, labium.