Rozenia, Straka, Jakub, Juzova, Katerina & Batelka, Jan, 2014

Straka, Jakub, Juzova, Katerina & Batelka, Jan, 2014, A new genus of Strepsiptera, Rozenia gen. n. (Stylopidae), a parasite of bee genera Acamptopoeum and Calliopsis (Andrenidae, Panurginae, Calliopsini), ZooKeys 442, pp. 31-49 : 33-35

Taxon classification Animalia Strepsiptera Stylopidae

Rozenia gen. n.

Type species.

Rozenia calliopsidis sp. n.

Diagnosis.

Female. Rozenia gen. n. differs from other genera of the family Stylopidae in having only four abdominal segments. Similarly to the genus Crawfordia Pierce, 1908, canalis prolifer of Rozenia gen. n. is with a single median tuba prolifera present on segments II-IV of the abdominal part of female. However, tuba prolifera III of Rozenia gen. n. is positioned on the posterior half of abdominal segment IV, but in the middle of segment IV in Crawfordia , which possesses also rudimentary segment V. Abdomen of other genera of the family Stylopidae is composed by higher number of segments.

Female puparium. Brood opening of the new genus is very wide, almost from side to side, about four times wider than intermandibular distance, or more in Rozenia gen. n. Brood opening is usually much narrower in other genera of the family Stylopidae . Narrow head corners are produced laterally beyond prothorax; this feature causes head to be wider than distal part of prothorax and side of cephalothorax is not continuously diverging posteriorly. This character is developed in Eurystylops Bohart, 1943 and some species of the genus Crawfordia . Head corners are relatively long, but not as long as in Crawfordia , which possess head corners longer than half of cephalothorax. In Rozenia gen. n. head corners are as long as head dorsally, but Crawfordia has much longer head corners than head dorsally. Mandibles extending from the head contour in ventral view. In contrast to Crawfordia , intersegmental ridges are not developed in Rozenia gen. n.

First instar. First instars of Rozenia gen. n. differ substantially from other genera by having setae of submedian row on thorax as well as on abdominal segments. Caudal setae are distinctly longer than body. Both these characters are unique among all Strepsiptera . Rozenia gen. n. does not have spinulae on posterior margin of thoracic tergites as in Xenidae , Halictophagidae , or Elenchidae . These spinulae are developed on posterior margin of thoracic tergites in all other genera of the family Stylopidae . Ventral sublateral bristle is missing on sternum IX in Rozenia gen. n., but probably present in all other genera of Strepsiptera . Posterior margin of labiomaxilary area continuous in Rozenia gen. n., but emarginated in Crawfordia , Halictoxenos and Stylops (and probably also in other Stylopidae ).

Description.

Female. Canalis prolifer on abdominal segments I-IV, segment V absent. Single median tuba prolifera on segments II-IV, tuba prolifera on segment IV positioned in posterior half of segment.

Female puparium. Head corners (on ventral side) extending posteriorly as far as head posterior margin on dorsal side; head corners distinct, narrow, forming a lamella on frontal part of cephalothorax, produced laterally beyond prothorax, this feature causes head to be wider than distal part of prothorax and side of cephalothorax is not continuously diverging posteriorly; head corners elevated ventrally over intermandibular part of head, but not over prothorax; brood opening wide, distinctly wider than distance between mandibles; mandibles variable in size, but at least the tip is extending from the head contour in ventral view. Intersegmental ridges not developed; anterior margin of mesothorax ill-defined, but transverse and does not extend forward; spiracles positioned distally above prominent spiracular corners, close to middle of cephalothorax. Prothorax ventrally pigmented, not lighter than head corners.

Male. Unknown.

First instar. Body rounded; thorax approx. half of entire body length (caudal setae not included); caudal setae distinctly longer than body length. Head strongly reduced ventrally; maxilla with single seta; mandibles and labrum overlapping outline of body; labium fused to maxillae forming labiomaxillary area, its posterior margin continuous, not emarginated.

Each segment of thorax bears at least two pairs of setae dorsally and laterally close to posterior margin, forming submedian and lateral rows of setae. Posterior margins of thoracic tergites smooth. Coxae broad, ovate; three coxal teeth at anterior part of each coxa, all divided into two to four tips; one coxal bristle divided at least into two tips; up to five cuticular outgrowths laterally from coxal teeth and one very short seta anteriorly from cuticular outgrowths; one very short seta at posterior part of coxa. Each trochanterofemur with femoral spur bifid at tip; up to six cuticular outgrowths and one short seta anteriorly and posteriorly on femur; each tibia with five tibial spurs and small projections at distal end of tibia. Tarsi of fore and mid legs enlarged and elongated; tarsi of hind legs rod-like and elongated. Sternal figs broad and smooth on surface (paired setae missing).

Abdomen with rows of setae similar to those present on thorax. Abdominal segment X extremely shortened and fused to segment IX; segment XI split into two parts and restricted to ventral base of caudal setae; segment XI with one particularly long caudal seta and short lateral caudal seta. Posterior margins of abdominal tergites smooth except laterally, spinulae not immersed; posterior margin of abdominal sternites with spinulae, spinulae not immersed; segment IX with only two spinulae, ventral sublateral bristle is missing.

Hosts.

Bees of the genera Acamptopoeum and Calliopsis .

Etymology.

Named in honor of the excellent bee expert, teacher of generations of bee students and a friendly and knowledgeable man, Jerome G. Rozen Jr. (American Museum of Natural History, New York, USA). J.G. Rozen Jr., collected most of the specimens of all three new species used for the descriptions.