Heteroborips cryptographus ( Ratzeburg, 1837 )

Mandelshtam, Michail Yu., Petrov, Alexander V., Smith, Sarah M. & Cognato, Anthony I., 2019, Resurrection of Heteroborips Reitter, 1913 (Coleoptera: Curculionidae: Scolytinae) from Synonymy with Xyleborus Eichhoff, 1864, The Coleopterists Bulletin 73 (2), pp. 387-394 : 391-392

Heteroborips cryptographus ( Ratzeburg, 1837) , combination reinstated

( Figs. 2—4 , 7—10 )

Bostrichus cryptographus Ratzeburg 1837: 160 ♀.

Material Examined. The types of H. cryptographus cannot be located (Wood and Bright 1992). More than 1,000 specimens from various parts of Russia and Europe were studied, including more than 250 specimens collected by A. Mishin, V. Shabliovskyi, and L. Lyubarskii in Maikhe Forest ( Shkotov District , southern part of Maritime (Primorsk) Territory in the Far East) in 1931— 1932 and originating from V. N. Stark collection ( ZISP) .

Description. Female. Body shiny, 2.1—2.5 mm long, reddish brown to nearly black ( Figs. 7, 8 ). Legs and antennae lighter, yellow in color. Head: Frons broad and short, only slightly convex, with obscure punctures and rugosities; punctures above epistoma smaller than in upper portion of frons; with obscure, short median keel, poorly developed in some specimens; surface covered by long, erect, sparsely set hairs. Vertex finely shagreened. Segment 1 of antennal club corneous, concave on anterior face. Pronotum: As described above in key, pronotum rounded in dorsal view, basic (type 2; Hulcr et al. 2007), median line smooth, obscure; surface covered by erect setae, longer at anterior and lateral margins. Protibia: As described for genus, with protibial denticles large, distinctly larger than basal width, their bases slightly elevated. Elytra: Cylindrical, as wide as pronotum, lateral margins parallel, broadly rounded at apex, declivity steep and slightly flattened ( Figs. 7, 8 ). Pit mycangia absent. Strial punctures clearly developed, narrow and not deep, evident on disc and declivity, punctures densely set, irregularly shaped. Interstriae flat, wider than striae, punctures minute, irregularly uniseriate. Declivital interstriae each with a uniseriate row of small tubercles. Striae with regular rows of short, erect setae. Interstrial setae similar to those of striae but approximately twice as long as width of interstria 2. Abdomen: Densely punctate with sparse, erect hairs.

Distribution. Austria, Belgium, Belarus, Croatia, Czech Republic, Denmark, Estonia, Finland, France, Germany, Georgia, Hungary, Italy, Kazakhstan, Latvia, Macedonia, Norway, Poland, Russia (Caucasus, Crimea, East Siberia, European part, Far East, West Siberia), Serbia, Montenegro, Slovakia, Spain, Sweden, Switzerland, Ukraine ( Kn´ıžek 2011). Detailed Russian distribution: All European parts (Murmansk Prov., Karelia, Leningrad Province, Novgorod Province, Vologda Province, Kirovsk Province, Pskov Province, Yaroslavl Province, Moscow Province, Kostroma Province, Mordovia Republic, Chuvashia Republic, Udmurtia Republic, Samara Province, Smolensk Province, Briansk Province, Kaluga Province, Saratov Province, Kaliningrad Province, Kursk Province, Crimea, Adygea Republic, Krasnoyarsk Territory, Shkotov District of Maritime (Primorsk) Territory ( Chilakhsaeva 2011).

Host Plants. Populus tremula L. ( Salicaceae ), less commonly on Populus nigra L. Only one record is from Salix rorida Lacksch. (Salicaceae) (Western Saian Mts., Ermakovskii District, Krasnoyarsk Territory, nearby Tanzybeii settlement) (Akulov and Mandelshtam 2012).

Biology. Galleries are excavated on the inner surface of bark and distinctly score the outer layers of wood. Eggs are laid in a cluster. Larvae exhibit communal feeding and consume fungi growing in the parental tunnel.

Figures

Figs. 2–6. Antennae of Heteroborips species. H. cryptographus: 2) Anterior side, female; 3) Anterior side, male;

Figs. 7–10. Heteroborips cryptographus, habitus. 7) Female, dorsal view; 8) Female, lateral view; 9) Male, dorsal view; 10) Male, lateral view.