Aneurops convergens (Sharp, 1900) Bousquet, Yves, 2003

Bousquet, Yves, 2003, Redescription of Aneurops convergens (Sharp), New Combination (Coleoptera: Monotomidae), The Coleopterists Bulletin 57 (2), pp. 141-145 : 142-144

Aneurops convergens (Sharp, 1900) , new combination

Europs convergens Sharp 1900:572 . Type locality: ‘‘ Jacale’ ’, México [Jacala is located in the state of Hidalgo, central México, within the Sierra Madre Oriental].

Type Material. Sharp’s description of E. convergens was based on two specimens. I have seen one specimen from the BMNH labelled: ‘‘ Europs convergens . Type # D.S. Jacale [handwritten on the specimen card]/ Type / Jacale [handwritten] Mexico. Salle Coll./ B.C.A., Col.,II (1). Europs .’’

Description. Habitus ( Fig. 1 ). Upper surface uniformly reddish brown, varying from pale to rather dark. Head wider in males (WH/WP 5 0.96–1.09; ‾ x 5 1.02; n 5 10) than in females (WH/ WP 5 0.89–0.96; ‾ x 5 0.92; n 5 10); eyes convex; temples 0.4–0.5 times longitudinal diameter of eyes in females, 0.5–0.7 times longitudinal diameter of eyes in males; antennal club 3-segmented (seemingly 2-segmented); antennomere IX transverse, as wide as antennomeres X and XI. Pronotum elongate, often more so in females (LP/WP 5 1.13–1.22; ‾ x 5 1.17; n 5 10) than in males (LP/WP 5 1.06–1.18; ‾ x 5 1.12; n 5 10); lateral sides crenulated, more or less parallel (except at extremities) to slightly or moderately convergent posteriorly; maximal width in apical fourth or fifth in most specimens; anterior angles rounded, not protruding; punctures moderately sparse and rather coarse, those on disc slightly coarser than those on sides; disc with narrow median impunctate area, surface with well impressed isodiametric microsculpture. Elytra rather long (LE/LP 5 1.71–1.86; ‾ x 5 1.79; n 5 20); strial punctures conspicuous, with very small to small setae (much shorter than width of interval); disc with well impressed, more or less isodiametric microsculpture; scutellum without setae; inflexed part of elytron with 3 rows of punctures (most lateral row very close to lateral margin). Metasternum with longitudinal meshes medioposteriorly. First visible sternite of male with median, oval plaque more microsculptured than adjacent area and bearing proportionally long setae; coxal bead on first visible sternite triangularly produced, without longitudinal extension. Male last sternite without sexual modification. Penultimate tarsomere not lobed.

Body length: 2.2–3.4 mm.

Geographical Distribution. The species ranges from Colorado , southeastern Arizona and New Mexico ( Map 1) south to the state of Hidalgo in México.

Records. United States. Arizona. Cochise Co. : Chiricahua Mts. , J.L. Webb ( USNM) 1 [ Pinus ponderosa ]; idem, Hubbard and Schwarz ( USNM) 1; idem, 16.X.1974, K. Stephan ( MCZ) 1 [under bark conifer]; idem, 4.V.1969, 7.IX.1968, K. Stephan ( FSCA) 15 [under bark pine]. Chiricahua Mts. , Rustlers Pk., 26.VII.1969, 2.VIII.1969, R.L. Wenzel ( FMNH) 3 [under bark of Pinus ponderosa ]; idem, 25–26. VIII.1952, 16.IX.1952, B. Malkin ( FMNH) 20; idem, 17.VIII.52, H.B. Leech and J.W. Green ( CAS) 1 [under bark of yellow pine]; idem, 1.VIII.1994, F. Andrews and T. Eichlin ( CDAE) 1. Chiricahua Mts., Barfoot Peak , 6.V.1963, L. Herman ( AMNH) 1 [under bark of log]. 0.8 mi. NE Rustler Park , 26.VII.1989, F. Andrews and T. Eichlin ( CDAE) 1 [under bark of conifer logs]. 5 mi. W Portal , 30.VII.1969, R.L. Wenzel ( FMNH) 1 [2 foot diam. Pinus ponderosa ]. 1 mi. S Onion Saddle , 5.V.1988, F. Andrews and T. Eichlin ( CDAE) 5 [under Pinus bark]. Huachu [ca] Mts., VII, H.A. Wenzel ( MCZ, OSUC) 14. Graham Co.: Graham Mts. , 14.VIII.30, M.W. Blackman ( USNM) 1 [ Pinus ponderosa ]; idem, 25.IV.1971, K. Stephan ( FSCA) 2. Greenlee Co.: Strayhorse Forest Camp, 30.V.70, K. Stephan ( FSCA) 1. Pima Co. : Mt. Lemmon Obs., S[an]ta Cat [alina] Mts. , 6.IX.1972, D.S. Chandler ( OSUC) 7 [under pine or fir bark]. Santa Catalina Mts. , 8.II.1976, 4.X.1971, K. Stephan ( FSCA) 4. Colorado. Park Co.: Lake George , 26.VII.1966, R.M. Reeves ( NHDE) 1. New Mexico. Lincoln Co.: Lincoln Nat’l Forest , 29.VIII.62, J.F. Chansler ( USNM) 1 [ Pinus ponderosa ]. Otero Co.: Cloudcroft , 3.VIII, 17. VIII, 31.VIII, 7.IX.51, Hopkins ( USNM) 4. México.

Durango. 10 mi. W El Salto, 21.IV, 8.V.1961, Howden and Martin ( CNC) 7; idem, 25.VI.64, E.E. Linquist ( CNC) 1; idem, 26, 28.VI, 5, 12.VII.1964, H.F. Howden

(CNC) 9. El Salto, 3–8.VI.37 ( CAS) 1. Nuevo León. Cerro Potosi, 3.V.71, D.E. Bright ( CNC) 1. Hidalgo. Jacala [type locality] .

Habitat. Label data indicate that members of this species live under the bark of pine trees, particularly (exclusively?) Pinus ponderosa Laws.

Notes. Some of the males studied have proportionally larger head with the temples slightly longer and slightly more bulbous than other males and females. This features also occurs in species of some other genera of Monotomidae (per. obs.).

I have seen a few specimens of Aneurops from Nebraska (Pine Ridge) and New Mexico (Albuquerque; Coolidge; Las Vegas) that are on average paler and with the microsculpture on the median impunctate area of the pronotum consisting of more or less sinuous microlines, not arranged in an isodiametric pattern as in the other specimens studied. These individuals probably represent another, unnamed species, that will be described when more specimens become available.

Aneurops championi is structurally similar to A. convergens but differs by the less convex eyes, the more densely pubescent plaque on the first abdominal sternite of the male and by larger size [length of body 5 3.7 ($), 4.7 (#)]. I have seen a male and a female of A. championi (BMNH) , out of the original nine specimens reported by Sharp (1900:574) from Totonicapán in Guatemala.

Figures

Fig. 1. Aneurops convergens #, habitus. Scale bar 5 1 mm.