Theognete semistriata Anderson, 2010

Anderson, Robert S., 2010, A taxonomic monograph of the Middle American leaf-litter inhabiting weevil genus Theognete Champion (Coleoptera: Curculionidae; Molytinae; Lymantini) 2458, Zootaxa 2458 (1), pp. 1-127 : 28

16. Theognete semistriata Anderson , new species ( Figures 5 , 75 , 80 , 85 , 129–132 )

Diagnosis. Size. Length, male, 3.77–4.33mm; female, 3.82–4.61mm. Width, male, 1.91–2.19mm; female, 1.80–2.16mm. Pronotum moderately densely and moderately deeply punctate. Pronotum with apical constriction evident laterally as a series of separate linearly arranged punctures. Elytra with sutural stria very deeply linearly impressed and punctate from base to near midlength, stria 2 as a series of large, widely separated, impressed punctures, not linearly impressed; posterolateral area of elytra with punctures deeply impressed, continuous with punctures of striae in lateral area. Procoxae narrowly separated. Aedeagus as in Fig. 80 .

Geographical distribution. México (Guerrero).

Natural history. Collected from berlese extraction of wet oak-pine-fir forest and oak forest leaf litter at elevations ranging from 2400–2775m.

Derivation of specific name. Named from the Latin semi, meaning half, and striatus, meaning grooved, in reference to the relatively deep striae, which are limited to the middle portion of the elytra.

Material examined. 12♂, 9♀♀ ( CMNC, CWOB, ECOS) . Holotype ♂ ( CMNC) : MÉXICO: Guerrero. 10.3km SW. Filo de Caballo , 2774m, 8.vii.87, R. Anderson, oak-pine-fir forest / HOLOTYPE ♂, Theognete semistriata sp. nov. R.S. Anderson. Aedeagus extracted. Paratypes: MÉXICO: Guerrero: Filo de Caballo (9.3 km S. W.) , 2400m, 15.VII.1992, R. Anderson, oak/pine/fir forest (wet) leaf/log litter berlese (1♂ CMNC) . Filo de Caballo (10.3 km S. W.) , 2774m, 8.VII.1987, R. Anderson, oak/pine/fir forest (5♂, 4♀♀ CMNC, CWOB, ECOS) . Filo de Caballo (10.3 km S. W.) , 2700m, 13.VII.1992, R. Anderson, oak/pine/fir forest (wet) leaf/log litter berlese (1♂, 3♀♀ CMNC) . Filo de Caballo (10.3 km S. W.) , 2700m, 15.VII.1992, R. Anderson, oak/ pine/fir forest (wet) leaf/log litter berlese (2♂ CMNC) . Filo de Caballo (10.3 km S. W.) , 2700m, 17.VII.1992, R. Anderson, oak/pine/fir forest (wet) leaf/log litter berlese (1♂ CMNC) . Filo de Caballo (10.3 km S. W.) , 2700m, 18.VII.1992, R. Anderson, oak/pine/fir forest (wet) leaf/log litter berlese (1♀ CMNC) . Filo de Caballo (15.0 km S. W.) , 2500m, 16.VII.1992, R. Anderson, oak forest (wet) litter berlese (1♂, 1♀ CMNC) .

Chorological relationships. Sympatric with T. carinata .

Figures

FIGURES 2–7. Thoracic sterna, ventral view, Theognete species. 2. T. gracilis. 3. T. striatifemur. 4. T. fulgida. 5. T. semistriata. 6. T. caviventris. 7. T. bothynometopon.

FIGURES 74–78. Habitus, dorsal view, Theognete semistriata species group. 74. T. akros. 75. T. semistriata. 76. T.elongata. 77. T. humilis. 78. T. semiopaca.

FIGURES 79–81. Aedeagus, dorsal and lateral view, Theognete semistriata species group. 79. T. akros. 80. T. semistriata. 81. T. elongata.

FIGURES 84–88. Abdominal ventrite 5, male, ventral view, Theognete semistriata species group. 84. T. akros. 85. T. semistriata. 86. T. elongata. 87. T. humilis. 88. T. semiopaca.

FIGURES 117–132. Female genitalia (top to bottom; spermatheca, tergite VIII, sternite VIII, tergite VII), Theognete species, various species groups, representatives. 117–120. T. kovariki. 121–124. T. laevis. 125–128. T. denticulata. 129– 132. T. semistriata.