Alcidodes curranae Lyal, 2000

Lyal, C. H. C. & Curran, L. M., 2000, Seed-feeding beetles of the weevil tribe Mecysolobini (Insecta: Coleoptera: Curculionidae) developing in seeds of trees in the Dipterocarpaceae, Journal of Natural History 34 (9), pp. 1743-1847 : 1794-1795

Alcidodes curranae Lyal , n.sp.

Length 9.6±11.1 mm (xÅ5 10.26), PW 5 4.1±4.9 mm (xÅ5 4.50), HW 5 5.0± 6.1 mm (xÅ5 5.67) (n 5 16) (®gures 24, 56, 76) .

Head. Rostrum virtually straight, slightly longer and more slender in female ( RL 5 3.88±4.75 mm, xÅ5 4.40 mm; RL/ PW5 0.94±1.06, xÅ5 0.97; RB/RD 5 0.75± 0.94, xÅ5 0.85; n 5 10) (®gure 189) than in male ( RL 5 3.5±4.0 mm, xÅ5 3.69 mm; RL/ PW 5 0.81±0.86, xÅ5 0.83; RB/RD 5 0.93±1.23, xÅ5 1.11; n 5 6) (®gure 190) .

Thorax. PL / PW, m, 0.73±0.79 (xÅ5 0.75, n 5 10),, l0.75±0.79 (xÅ5 0.77, n 5 6); prothorax with tooth posterior to coxa. Elytra with interstriae smooth or very weakly wrinkled proximally, strial punctures shallow or deep, as wide as or narrower than interstriae, humeri with interstria 9 generally weakly projecting beyond 8 in dorsal view (®gures 24, 41); EL/HW, m, 1.30±1.36 (xÅ5 1.33, n 5 10),, l1.30±1.40 (xÅ5 1.33, n 5 6). Elytra sometimes with dark markings at humeri and a large spot on disc, these two occasionally indistinctly joined to give an irregular diagonal bar; scales sparse, but usually least dense on disc. Fore femur with ventral tooth subtriangular, lacking proximal lobe, proximal margin at c.90ss to long axis of femur and shorter than length of tooth, distal margin dentate or serrate (®gures 131, 152, 153); all tibiae with small ventral tooth. Metasternum strongly produced posteroventrally before hind coxae, its ventral margin strongly diverging from elytral margin .

Abdomen. Ventrite 5 with two caudal setal tufts on raised posterior margin in both sexes, those of male larger than those of female; disc of ventrite 5 depressed medially (®gures 96, 97).

Male terminalia. Tergite 7 as in ®gure 252; short submarginal row of plectral tubercles on each side. Segment 8 as ®gure 253. Genitalia as in ®gures 254±259. Tegmen with parameres fused at base (®gure 255). Aedeagus with apex rounded, deēxed, sides weakly rounded, converging, sclerotization extending onto dorsal surface (®gure 257), distance from ostium to apex greater than width of ostium (®gure 259).

Female terminalia. (®gures 260±265) Tergite 7 with 3±4 pairs of very obscure plectral tubercles lying alongside wing-binding patches and more posteriorly on disc (®gure 260). Tergite 8 with rounded posterior margin, disc and median anterior margin very weakly sclerotized (®gure 261). Spiculum ventrale (®gure 262) with broad part not at angle to apodeme. Female genitalia as in ®gures 263±265; hemisternites much shorter than broad part of spiculum ventrale, styli not enlarged or ¯attened (®gures 263; 265). Spermathecal duct arising from junction of common oviduct and bursa (®gure 263); spermatheca with simple ¯exed tubular gland lobe (®gure 264).

Distinguishing features. Alcidodes curranae belongs to the sub-group of the crassus group with a more gradual slope to the distal margin of the fore femoral tooth (®gure 152, cf. ®gure 160), and may be distinguished from others as follows: from crassus and hoplomachus by (1) the relatively short, nearly straight rostrum, which is only slightly longer in females than in males (®gures 189, 190), unlike the other two species, in which the female rostrum is much longer than that of the males, and rather more curved (®gures 184±187), (2) the relatively shorter aedeagus (®gure 257, cf. ®gures 226, 238) and (3) the shorter styli of the ovipositor (®gure 265, cf. ®gures 233, 245); from ramezei by (1) the broader elytral strial punctures, which especially in striae 1 and 2 are distinctly narrower than the adjacent interstriae 2 and 3 in ramezei , not in curranae , (2) interstriae 2 and 3 are strongly raised on the